boatramp-node 0.2.2

//! Local configuration files (RON).
//!
//! Two distinct files, split by audience:
//!
//! - **`project.cfg`** — one per project folder, read by the client commands
//!   (`sync`, `build`, `bundle`, `validate`): where/how to publish, the optional
//!   build/bundle steps, and the deploy-scoped `routing` config that is folded
//!   into the immutable deployment manifest. See [`ProjectConfig`].
//! - **`boatramp.cfg`** — the server daemon config, read by `serve`:
//!   `serve` / `handlers` / `cluster`. See [`ServerConfig`].
//!
//! Both are RON; a missing file yields the default config.

use std::collections::BTreeMap;
use std::net::SocketAddr;
use std::path::{Path, PathBuf};

use boatramp_core::config::DeployConfig;
use serde::Deserialize;

/// RON parse options shared by both loaders: `implicit_some` lets optional fields
/// be written as bare values (`server: "..."`, not `Some("...")`). `pub` so the
/// binary (which re-exports this module) can parse a manifest with the same
/// options after the module moved into this crate.
pub fn ron_options() -> ron::Options {
    ron::Options::default().with_default_extension(ron::extensions::Extensions::IMPLICIT_SOME)
}

/// A failure loading or parsing a local config file (`project.cfg` / `boatramp.cfg`).
#[derive(Debug, thiserror::Error)]
pub enum ConfigError {
    /// Wraps an underlying error with the file path it came from.
    #[error("{path}: {source}")]
    File {
        path: String,
        #[source]
        source: Box<Self>,
    },
    /// The RON document failed to parse.
    #[error("invalid config syntax: {0}")]
    Ron(#[from] ron::error::SpannedError),
    /// The `routing` section failed its compile-check.
    #[error("routing: {0}")]
    Routing(#[from] boatramp_core::ConfigError),
    /// Reading the file failed (other than not-found, which yields defaults).
    #[error(transparent)]
    Io(#[from] std::io::Error),
}

/// Project configuration, loaded from `project.cfg` (RON) in the project folder.
///
/// Read by the client commands (`sync`, `build`, `bundle`, `validate`).
/// Everything is optional; a missing file is the default.
#[derive(Debug, Default, Deserialize)]
#[serde(default)]
pub struct ProjectConfig {
    /// Where and how to publish this project.
    pub publish: PublishConfig,
    /// Optional build step run before `sync`.
    pub build: Option<BuildConfig>,
    /// Optional embedded-bundler step (`bundler` feature).
    pub bundle: Option<BundleConfig>,
    /// Deploy-scoped routing/handlers config. Folded into the deployment
    /// manifest at `sync` (so it is atomic with the content and rolls back with
    /// it). The bulk of a project's config — redirects, rewrites, headers,
    /// handlers, consumers, crons, streams.
    pub routing: DeployConfig,
}

impl ProjectConfig {
    /// Parse a `project.cfg` document (RON). The `routing` section is
    /// compile-checked (route patterns, cron schedules, imports) so a bad config
    /// fails fast.
    pub fn parse(text: &str) -> Result<Self, ConfigError> {
        let config: Self = ron_options().from_str(text)?;
        config.routing.compile_check()?;
        Ok(config)
    }

    /// Load from `path` (RON). A missing file yields the default config.
    pub fn load(path: &Path) -> Result<Self, ConfigError> {
        match std::fs::read_to_string(path) {
            Ok(contents) => Self::parse(&contents).map_err(|err| ConfigError::File {
                path: path.display().to_string(),
                source: Box::new(err),
            }),
            Err(err) if err.kind() == std::io::ErrorKind::NotFound => Ok(Self::default()),
            Err(err) => Err(err.into()),
        }
    }
}

/// Server daemon configuration, loaded from `boatramp.cfg` (RON). Read by
/// `boatramp serve`; flags/env override the `serve` values.
#[derive(Debug, Default, Deserialize)]
#[serde(default)]
pub struct ServerConfig {
    /// Server defaults for `serve` (flag/env override these).
    pub serve: Option<ServeConfig>,
    /// Server-side handler runtime config (which backend serves each binding),
    /// consumed only with the `handlers` feature.
    pub handlers: Option<HandlersConfig>,
    /// Self-hosted cluster mode (consumed only with the `cluster` feature).
    pub cluster: Option<ClusterConfig>,
    /// Opt-in **compute** backends. Present ⇒ this node
    /// runs compute workloads via the backends it can offer; absent ⇒ no compute
    /// (the reconcile loop stays a no-op).
    pub compute: Option<ComputeConfig>,
    /// Operator security posture (the hardening knobs): a profile
    /// preset + overrides, resolved at startup. Absent ⇒ the strict
    /// `multi-tenant` default. Operator-only — never part of site config.
    pub security: Option<boatramp_core::security::SecurityConfig>,
    /// Secrets-at-rest envelope. Absent ⇒ private
    /// keys stored cleartext in the (replicated) control plane.
    pub secrets: Option<SecretsConfig>,
}

/// `secrets` section — envelope encryption for private keys at rest.
#[cfg_attr(not(feature = "cluster"), allow(dead_code))]
#[derive(Debug, Clone, Default, Deserialize)]
#[serde(default, deny_unknown_fields)]
pub struct SecretsConfig {
    /// Backend: `"local"` (machine-local AES-256-GCM KEK) or `"vault"` (Vault
    /// Transit). Empty/other ⇒ no wrapping. In a cluster a local KEK must be the
    /// **same file on every node** (wrapped certs replicate); Vault avoids that.
    pub envelope: String,
    /// Local-KEK key file (`envelope = "local"`). Default
    /// `<data-dir>/secrets/kek`. Auto-generated `0600` if absent.
    pub kek_file: Option<PathBuf>,
    /// Vault Transit config (`envelope = "vault"`).
    pub vault: Option<VaultSecretsConfig>,
}

/// Vault Transit settings for `envelope = "vault"`. The token is read from the
/// environment (`token_env`), never stored in the config file.
#[cfg_attr(not(all(feature = "cluster", feature = "acme-dns")), allow(dead_code))]
#[derive(Debug, Clone, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct VaultSecretsConfig {
    /// Vault address, e.g. `https://vault:8200`.
    pub addr: String,
    /// Transit key name to wrap under.
    pub key: String,
    /// Environment variable holding the Vault token (default `VAULT_TOKEN`).
    #[serde(default = "default_vault_token_env")]
    pub token_env: String,
}

fn default_vault_token_env() -> String {
    "VAULT_TOKEN".to_string()
}

impl ServerConfig {
    /// Parse a `boatramp.cfg` document (RON).
    pub fn parse(text: &str) -> Result<Self, ConfigError> {
        Ok(ron_options().from_str(text)?)
    }

    /// Load from `path` (RON). A missing file yields the default config.
    pub fn load(path: &Path) -> Result<Self, ConfigError> {
        match std::fs::read_to_string(path) {
            Ok(contents) => Self::parse(&contents).map_err(|err| ConfigError::File {
                path: path.display().to_string(),
                source: Box::new(err),
            }),
            Err(err) if err.kind() == std::io::ErrorKind::NotFound => Ok(Self::default()),
            Err(err) => Err(err.into()),
        }
    }
}

/// `compute` section — opt-in compute backends. Present
/// ⇒ `serve` registers the backends this node can offer and advertises them to
/// the scheduler; backends are capability-detected (container on Linux, remote
/// docker when a daemon is reachable, VMM when `/dev/kvm` exists).
#[derive(Debug, Clone, Deserialize)]
#[serde(default, deny_unknown_fields)]
pub struct ComputeConfig {
    /// Bridge the container veths / VM taps attach to (default `br-boatramp`).
    pub bridge: String,
    /// Guest IP subnet (default `10.0.0.0/24`).
    pub subnet: String,
    /// vCPUs this node advertises as schedulable (`0` ⇒ detect from the host).
    pub vcpus: u32,
    /// Memory (MiB) this node advertises as schedulable (`0` ⇒ a 1 GiB default).
    pub mem_mib: u32,
    /// **Static** kernel-signing public keys (`"<alg>:<hex>"`) — the trust anchor
    /// for the posture-scaled kernel bar. Under `multi-tenant`, a dynamically-
    /// selected default kernel must carry a signature verifying against one of
    /// these. Host-access-gated (never in the KV tier); changing it needs a
    /// restart. Empty ⇒ no kernel may be signed-verified (strict posture then
    /// accepts none).
    pub kernel_signing_pubkeys: Vec<String>,
    /// **Static** allow-list of kernel content hashes (sha256 hex) a dynamic
    /// default may select under `multi-tenant`. Host-access-gated. Empty ⇒ no
    /// kernel is allow-listed.
    pub kernel_allowed_hashes: Vec<String>,
    /// This node's **region** tag (FA-8). Advertised on the compute `Node` so a
    /// gateway routing to a `compute:`-backed workload with `--lb nearest` sends
    /// each request to the nearest replica by its node's region — no manual
    /// `--region` map. `None` ⇒ region-agnostic.
    pub region: Option<String>,
    /// How the remote-Docker backend reports a workload's reachable endpoint.
    /// `published` (default) publishes the container port on `127.0.0.1:<ephemeral>`
    /// so a host-native `serve` reaches it on any daemon (incl. Docker Desktop /
    /// macOS, where the bridge IP is not host-routable); `bridge` routes to the
    /// container bridge IP directly (only when `serve` shares the daemon's network).
    pub docker_endpoint: boatramp_docker::DockerEndpoint,
    /// How the remote-Docker backend backs a workload's persistent volumes.
    /// `named` (default) attaches a daemon-managed `docker volume` by name (portable
    /// across daemons + Docker Desktop / macOS); `bind` bind-mounts a host directory
    /// under `<data_dir>/compute/volumes/<name>` (local daemon only).
    pub docker_volume_mode: boatramp_docker::DockerVolumeMode,
    /// Guest-reachable base URL of the compute **sql-shim** (PLAN-compute-bindings) —
    /// e.g. `http://10.0.0.1:8081` (the compute bridge gateway) or the docker bridge
    /// gateway. Set ⇒ a workload's `--bind sql` reaches the managed database through a
    /// listener bound on `0.0.0.0:<port>`. `None` (default) ⇒ compute sql bindings off.
    #[serde(default, skip_serializing_if = "Option::is_none")]
    #[cfg_attr(not(feature = "handlers"), allow(dead_code))]
    pub sql_shim_url: Option<String>,
}

/// The built-in **boatramp kernel-signing public key** (`es256:…`), whose private
/// half lives as the `KERNEL_SIGNING_KEY` Actions secret in
/// [`BoatRamp/boatramp-vmlinux`](https://github.com/BoatRamp/boatramp-vmlinux).
/// Shipped as a default trust anchor so the first-party signed `boatramp-vmlinux`
/// verifies out of the box under the strict posture. An operator can replace
/// `kernel_signing_pubkeys` to trust only their own keys.
pub const BOATRAMP_KERNEL_SIGNING_PUBKEY: &str =
    "es256:02c4e4af2e9cba6ba6745c513f193622e6674a8b2d0187ebea5612f5b46a7eade4";

impl Default for ComputeConfig {
    fn default() -> Self {
        Self {
            bridge: "br-boatramp".to_string(),
            subnet: "10.0.0.0/24".to_string(),
            vcpus: 0,
            mem_mib: 0,
            kernel_signing_pubkeys: vec![BOATRAMP_KERNEL_SIGNING_PUBKEY.to_string()],
            // Signed `boatramp-vmlinux` release kernels trusted under the strict
            // posture (content sha256), so a selected `compute.default_kernel`
            // clears the bar out of the box. Bump on each new signed release.
            kernel_allowed_hashes: vec![
                // v0.2.0 minimal Firecracker 6.1-config kernel: boots under the
                // firecracker-*binary* backend (ACPI device discovery) but NOT the
                // in-process embedded VMM. Kept trusted so operators on the currently
                // published release don't fail strict verification.
                "cf1e590a9e642be3667131ca35fbf390378a457d8908169d2a169608e299d974".to_string(),
                // Same kernel + CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y (flake `#vmlinux`),
                // so the embedded VMM binds its virtio-block root over the cmdline
                // transport. Reproducible build output (deterministic nix build,
                // verified on KVM); the next signed boatramp-vmlinux release — which
                // reuses this flake — publishes + signs it, gated by
                // `vmlinux-release-boot.yml`.
                "d0dc2098ab2a2a3c1bc72ab61dc85d9e464d798d7e55b6b80525db5ca2f00c5a".to_string(),
            ],
            region: None,
            docker_endpoint: boatramp_docker::DockerEndpoint::default(),
            docker_volume_mode: boatramp_docker::DockerVolumeMode::default(),
            sql_shim_url: None,
        }
    }
}

/// `cluster` section — self-hosted **cluster mode**. Parsed in
/// every build so config files stay portable; only *consumed* when the `cluster`
/// feature is compiled in (`boatramp serve --mode cluster`).
#[cfg_attr(not(feature = "cluster"), allow(dead_code))]
#[derive(Debug, Clone, Deserialize)]
pub struct ClusterConfig {
    /// Address to bind this node's Raft **peer mesh** on (the `/raft/*` +
    /// `/stream/*` endpoints) — distinct from the public `serve.addr`.
    pub listen: SocketAddr,
    /// The cluster **root anchor set** — the `es256:`/`ed25519:`-tagged public
    /// keys that define this cluster's identity (a cluster *is* its root key).
    /// Every join/trust decision verifies against this set. Empty ⇒ falls back to
    /// `serve.auth_root_public_key` (the single-anchor default). A *set* enables
    /// make-before-break root rotation.
    #[serde(default)]
    pub root_pubkeys: Vec<String>,
    /// **Seeds** — control-plane addresses of existing cluster members
    /// (`host:port`), any of which can admit this node. Present ⇒ this node
    /// **joins** (redeems its `join_token`); absent + no durable state + explicit
    /// `--cluster-init` ⇒ it **founds**. There is no peer map: members are learned
    /// from the root-signed join response.
    #[serde(default)]
    pub seeds: Vec<String>,
    /// The single-use bearer **join token** used when `seeds` are set. Keeps the
    /// secret out of the file via a prefix: `env:VAR`, `path:/file`, or an inline
    /// literal. Usually supplied via `serve --cluster-join <ticket>` instead.
    #[serde(default)]
    pub join_token: Option<String>,
    /// Directory for this node's **durable** Raft log/state store (node-local;
    /// distinct from the replicated control plane). Default
    /// `<data-dir>/raft`.
    #[serde(default)]
    pub store_dir: Option<PathBuf>,
    /// Mesh identity + TLS settings. Absent ⇒ defaults (identity key
    /// auto-generated under `<data-dir>/mesh/identity.key`).
    #[serde(default)]
    pub mesh: Option<MeshConfig>,
}

/// `[cluster.mesh]` — mesh identity + TLS knobs.
#[cfg_attr(not(feature = "cluster"), allow(dead_code))]
#[derive(Debug, Clone, Default, Deserialize)]
#[serde(default, deny_unknown_fields)]
pub struct MeshConfig {
    /// Path to this node's Ed25519 identity key (PKCS#8 DER, `0600`,
    /// auto-generated). Default `<data-dir>/mesh/identity.key`.
    pub key_file: Option<PathBuf>,
    /// Automatic key-rotation cadence (e.g. `"30d"`); `None` = manual only.
    /// Consumed by the rotation loop.
    pub key_rotation: Option<String>,
    /// TTL for a single-use join token (e.g. `"1h"`).
    pub join_token_ttl: Option<String>,
    /// Gate mesh `client-write`s behind a control-plane **cluster-write
    /// capability**, so a trusted peer can't inject arbitrary
    /// control-plane writes on mesh trust alone. Requires the token root
    /// **private** key on every node (each mints + presents its own capability);
    /// default `false`.
    pub gate_client_writes: Option<bool>,
}

/// `handlers` section — server-side handler runtime config (read by `serve`).
/// Parsed in every build (so config files stay portable), but only *consumed*
/// when the `handlers` feature is compiled in.
#[cfg_attr(not(feature = "handlers"), allow(dead_code))]
#[derive(Debug, Clone, Default, Deserialize)]
#[serde(default)]
pub struct HandlersConfig {
    /// `handlers.bindings` — which backend serves each handler binding.
    pub bindings: BindingsConfig,
    /// Use the wasmtime **pooling** instance allocator: faster
    /// instantiation at the cost of a large up-front virtual-memory reservation.
    /// Off by default — opt in and benchmark for your workload.
    pub pooling: bool,
}

/// `handlers.bindings` — per-binding backend configuration. kv/blob reuse the
/// server's own KV/Storage backends (per-site prefixed); `sql` is the single
/// libsql backend, whose single-node-vs-cluster split is the only choice.
#[cfg_attr(not(feature = "handlers"), allow(dead_code))]
#[derive(Debug, Clone, Default, Deserialize)]
#[serde(default)]
pub struct BindingsConfig {
    /// `handlers.bindings.sql` — libsql settings. Absent ⇒ single-node,
    /// per-site embedded files under `<data-dir>/handlers-sql`.
    pub sql: Option<SqlBindingConfig>,
}

/// libsql settings for the handler `sql` binding — the single SQL backend. Each
/// site gets a real database boundary (an embedded file per site, or a sqld
/// namespace per site), never schema separation (which arbitrary guest SQL
/// escapes). Setting `url` switches from single-node to a shared sqld cluster;
/// everything else stays identical.
#[cfg_attr(not(feature = "handlers"), allow(dead_code))]
#[derive(Debug, Clone, Default, Deserialize)]
#[serde(default)]
pub struct SqlBindingConfig {
    /// Single-node: root directory for the per-site embedded database files
    /// (default `<data-dir>/handlers-sql`). Ignored when `url` is set.
    pub dir: Option<PathBuf>,
    /// Cluster: base sqld data URL (e.g. `http://sqld:8080`). When set, each
    /// site is a sqld namespace addressed as a subdomain of this URL; `admin_url`
    /// is then required.
    pub url: Option<String>,
    /// Cluster: sqld admin API base URL (e.g. `http://sqld:9090`) for creating
    /// per-site namespaces. Required when `url` is set.
    pub admin_url: Option<String>,
    /// Cluster: optional sqld **read-replica** data URL. When set, handlers'
    /// read-only `sql` transactions (`open-read-only`) route to this endpoint
    /// while writes stay on `url` (reads → replicas, writes → primary).
    /// Reads may lag (eventually consistent). Ignored in
    /// single-node mode (no `url`).
    pub replica_url: Option<String>,
    /// Name of the env var holding the sqld data auth token (optional; never
    /// the token itself in-file).
    pub token_env: Option<String>,
    /// Name of the env var holding the sqld admin API auth key (optional).
    pub admin_token_env: Option<String>,
    /// How preview deployments get their SQL database: `empty` (default — a
    /// fresh isolated db), `branch` (a consistent copy of the site's live db;
    /// single-node only), or `shared` (the site's live db). See
    /// `boatramp_core::sql::PreviewSqlMode`.
    pub preview_mode: Option<String>,
    /// Path to an idempotent SQL script run when an `empty` preview database is
    /// first opened (e.g. schema/seed). Ignored in `branch`/`shared` modes.
    pub preview_init: Option<PathBuf>,
    /// `handlers.bindings.sql.databases` — external **bring-your-own** databases,
    /// each opened by name via `sql.open("<name>")`. An operator-configured
    /// Postgres/MySQL whose *isolation is the operator's* (it's their database),
    /// so these bypass the per-site libsql boundary and are reachable by any
    /// handler/function granted the `sql` binding. Needs the `sql-postgres` /
    /// `sql-mysql` build feature for the engine. A name here shadows the same
    /// name on the managed libsql default.
    pub databases: BTreeMap<String, ExternalDatabaseConfig>,
}

/// One external (bring-your-own) SQL database for the handler `sql` binding. The
/// connection URL is a secret and is named indirectly (`url_env`), never written
/// in the config file.
#[cfg_attr(not(feature = "handlers"), allow(dead_code))]
#[derive(Debug, Clone, Default, Deserialize)]
#[serde(default)]
pub struct ExternalDatabaseConfig {
    /// Engine: `postgres` (aliases `postgresql`/`pg`) or `mysql` (alias
    /// `mariadb`).
    pub kind: String,
    /// Name of the env var holding the connection URL (e.g.
    /// `postgres://user:pw@host/db`). Required.
    pub url_env: String,
    /// Optional env var holding a **read-replica** connection URL. When set,
    /// `open-read-only` transactions route there; writes stay on `url_env`.
    pub read_url_env: Option<String>,
    /// Maximum pooled connections (default 8).
    pub pool_max: Option<u32>,
    /// Open every transaction `READ ONLY` (the engine rejects writes) — for a
    /// database functions should only read.
    pub read_only: bool,
    /// Permit **preview** deployments to reach this database. Default `false`: a
    /// preview is refused, so it can never touch the operator's live external DB.
    pub allow_preview: bool,
    /// Connection/acquire timeout in seconds (default 10).
    pub connect_timeout_secs: Option<u64>,
}

/// The signing algorithm for a signer that can choose one (`Local`, `Vault`,
/// `Pkcs11`). ES256 is the portable default; the cloud KMS backends are ES256-only
/// and ignore this. Written as a RON enum: `alg: Es256` / `alg: Ed25519`.
#[derive(Debug, Clone, Copy, Default, Deserialize)]
pub enum SignerAlg {
    /// ECDSA P-256 (COSE ES256) — the default.
    #[default]
    Es256,
    /// Ed25519 (COSE EdDSA).
    Ed25519,
}

impl SignerAlg {
    fn to_token_alg(self) -> boatramp_core::cose::TokenAlg {
        match self {
            Self::Es256 => boatramp_core::cose::TokenAlg::Es256,
            Self::Ed25519 => boatramp_core::cose::TokenAlg::Ed25519,
        }
    }
}

/// External token signer selector (`serve.signer`). Maps to
/// [`boatramp_server::signer::SignerConfig`]; secrets (tokens/PINs) are resolved
/// from the named env vars at startup, never stored in config. Written as a RON
/// enum — `signer: Vault(...)`, `signer: AwsKms(...)`, `signer: Pkcs11(...)`, ….
#[derive(Debug, Clone, Deserialize)]
#[serde(deny_unknown_fields)]
pub enum AuthSignerConfig {
    /// In-process key (`"<alg>:<hex>"`).
    Local {
        /// The private key spec, `"<alg>:<hex>"`.
        private_key: String,
    },
    /// HashiCorp Vault Transit key.
    Vault {
        /// Vault base address.
        address: String,
        /// The Transit key name.
        key: String,
        /// Env var holding the Vault token.
        token_env: String,
        /// The key algorithm.
        #[serde(default)]
        alg: SignerAlg,
    },
    /// AWS KMS asymmetric key (ES256).
    AwsKms {
        /// The KMS key id or ARN.
        key_id: String,
        /// Optional region override.
        #[serde(default)]
        region: Option<String>,
    },
    /// GCP Cloud KMS key version (ES256).
    GcpKms {
        /// The key-version resource name.
        key_version: String,
        /// Env var holding a GCP OAuth2 access token.
        access_token_env: String,
    },
    /// Azure Key Vault key (ES256).
    AzureKv {
        /// The vault base URL.
        vault_url: String,
        /// The key name.
        key: String,
        /// The key version.
        key_version: String,
        /// Env var holding an Azure AD access token.
        access_token_env: String,
    },
    /// PKCS#11 HSM key.
    Pkcs11 {
        /// Path to the PKCS#11 module.
        module: String,
        /// The token label.
        token_label: String,
        /// The key's `CKA_LABEL`.
        key_label: String,
        /// Env var holding the user PIN.
        pin_env: String,
        /// The key algorithm.
        #[serde(default)]
        alg: SignerAlg,
    },
}

impl AuthSignerConfig {
    /// Map the config-file form to the server's runtime [`SignerConfig`].
    pub fn to_signer_config(&self) -> boatramp_server::signer::SignerConfig {
        use boatramp_server::signer::SignerConfig;
        match self {
            Self::Local { private_key } => SignerConfig::Local {
                private_key: private_key.clone(),
            },
            Self::Vault {
                address,
                key,
                token_env,
                alg,
            } => SignerConfig::Vault {
                address: address.clone(),
                key: key.clone(),
                token_env: token_env.clone(),
                alg: alg.to_token_alg(),
            },
            Self::AwsKms { key_id, region } => SignerConfig::AwsKms {
                key_id: key_id.clone(),
                region: region.clone(),
            },
            Self::GcpKms {
                key_version,
                access_token_env,
            } => SignerConfig::GcpKms {
                key_version: key_version.clone(),
                access_token_env: access_token_env.clone(),
            },
            Self::AzureKv {
                vault_url,
                key,
                key_version,
                access_token_env,
            } => SignerConfig::AzureKv {
                vault_url: vault_url.clone(),
                key: key.clone(),
                key_version: key_version.clone(),
                access_token_env: access_token_env.clone(),
            },
            Self::Pkcs11 {
                module,
                token_label,
                key_label,
                pin_env,
                alg,
            } => SignerConfig::Pkcs11 {
                module: module.clone(),
                token_label: token_label.clone(),
                key_label: key_label.clone(),
                pin_env: pin_env.clone(),
                alg: alg.to_token_alg(),
            },
        }
    }
}

/// `serve` section — server defaults, overridden by flags/env.
#[derive(Debug, Clone, Default, Deserialize)]
#[serde(default)]
pub struct ServeConfig {
    /// Bind address (e.g. `0.0.0.0:8080`).
    pub addr: Option<SocketAddr>,
    /// Data directory for filesystem backends.
    pub data_dir: Option<PathBuf>,
    /// Token root **private** key (hex) — issuing node: verifies *and* mints
    /// tokens / OIDC exchanges.
    pub auth_root_private_key: Option<String>,
    /// Token root **public** key (hex) — verify-only node.
    pub auth_root_public_key: Option<String>,
    /// Single-use bootstrap secret enabling `POST /api/tokens/bootstrap` (mint the
    /// first token without an admin bearer). Prefer the `BOATRAMP_BOOTSTRAP_SECRET`
    /// env / `--bootstrap-secret` flag so it isn't persisted in the config file.
    pub bootstrap_secret: Option<String>,
    /// External token signer (`[serve.signer]`): mint with a
    /// KMS/HSM/Vault-held root key instead of an in-process `auth_root_private_key`.
    /// Absent ⇒ the in-process key. When set, its public half is the trust anchor.
    pub signer: Option<AuthSignerConfig>,
    /// Reject blob uploads larger than this many bytes.
    pub max_upload_bytes: Option<u64>,
    /// Abort an upload that stalls for longer than this many seconds.
    pub upload_idle_timeout_secs: Option<u64>,
    /// Cap on simultaneous blob uploads.
    pub max_concurrent_uploads: Option<usize>,
    /// In a TLS mode, bind this plain-HTTP address on a second listener that
    /// redirects to HTTPS (dual-listener). Only read in `tls` builds.
    #[cfg_attr(not(feature = "tls"), allow(dead_code))]
    pub http_redirect_addr: Option<SocketAddr>,
    /// Site to serve for a `Host` matching no domain, instead of 404.
    pub default_site: Option<String>,
    /// The fleet's canonical public origin (e.g. `https://cp.example.com`) that a
    /// per-request proof-of-possession must bind to (`aud`). Required for
    /// holder-bound (`cnf`/PoP) tokens to be usable — a proof's origin is compared
    /// against this value, never against a `Host`/`X-Forwarded-*` header.
    pub pop_origin: Option<String>,
    /// Require a valid control-plane token to view deployment previews.
    pub protect_previews: bool,
    /// Rate-limit cluster-wide via the control-plane KV instead of per node.
    pub cluster_rate_limit: bool,
    /// Keep the config cache coherent across processes sharing one KV via the
    /// changelog.
    pub shared_cache_coherence: bool,
    /// Cloud blob-change notification provisioning tier (FA-5b2): how boatramp
    /// obtains the native event pipeline (S3→SQS) that backs a `blob` trigger —
    /// `dry-run` (print the recipe), `provision` (create + retract), `verify-only`
    /// (operator pre-wired), or `refuse` (fail closed). Absent ⇒ no provisioning:
    /// `blob` triggers then work only on a self-watching backend (fs). Only wired
    /// for the S3 backend (`--features s3`).
    pub blob_notify_tier: Option<boatramp_core::blob_notify::ProvisionTier>,
    /// The AWS account id used to scope the provisioned SQS queue's `SendMessage`
    /// policy (`aws:SourceAccount`). Required when `blob_notify_tier` provisions.
    pub blob_notify_account_id: Option<String>,
    /// `[serve.console]` — the embedded web management console. Absent (or
    /// `enabled: false`) ⇒ not served. This is the **baseline** for the dynamic
    /// `console.*` daemon-config override, which can enable/move it at runtime
    /// (`boatramp config set console.enabled true`) without a restart.
    pub console: Option<ConsoleConfig>,
}

/// `[serve.console]` — the embedded web console (a Wasm SPA baked into the
/// binary with the `console` build feature). Opt-in: the static shell holds no
/// secrets and the `/api` it drives is token-gated, so it is served
/// **unauthenticated** at a deliberately obscure path (a bearer token can't gate
/// a top-level browser navigation anyway — the path is the obscurity, the token
/// is the real gate).
#[cfg_attr(not(feature = "console"), allow(dead_code))]
#[derive(Debug, Clone, Default, Deserialize)]
#[serde(default, deny_unknown_fields)]
pub struct ConsoleConfig {
    /// Serve the embedded console (default `false`). Requires the `console` build
    /// feature; enabling it in a build without that feature is a logged no-op.
    pub enabled: bool,
    /// Host(s) the console answers on: `*` (any host, the default), an exact host
    /// (`console.example.com`), or a leading-wildcard (`*.example.com`).
    pub host: Option<String>,
    /// URL path prefix the console mounts at (default `/_console`). Kept under the
    /// reserved `/_` namespace so it never collides with a published site path.
    pub path: Option<String>,
}

/// `publish` section — where and what to deploy (the `sync` target).
#[derive(Debug, Default, Deserialize)]
#[serde(default)]
pub struct PublishConfig {
    /// Base URL of the boatramp server (e.g. `https://pad.example.com`).
    pub server: Option<String>,
    /// Site name to publish to.
    pub site: Option<String>,
    /// API token for the control plane (or set `BOATRAMP_TOKEN`).
    pub token: Option<String>,
    /// Project this site belongs to (overrides with `--project` / `BOATRAMP_PROJECT`).
    pub project: Option<String>,
}

/// `build` section.
#[derive(Debug, Clone, Deserialize)]
pub struct BuildConfig {
    /// Shell command to run (e.g. `npm run build`).
    pub command: String,
    /// Directory the build emits, published by `sync` (e.g. `dist`).
    #[serde(default)]
    pub output: Option<String>,
}

/// `bundle` section — the in-process Rust bundler (`bundler` feature).
#[derive(Debug, Clone, Default, Deserialize)]
#[serde(default)]
pub struct BundleConfig {
    /// Output directory for bundled assets (e.g. `dist`).
    #[serde(default = "default_bundle_outdir")]
    pub outdir: String,
    /// JS/TS entry points bundled by Rolldown (tree-shaken, code-split).
    pub js: Vec<String>,
    /// CSS entry points bundled by lightningcss (`@import` inlined).
    pub css: Vec<String>,
    /// Minify output (default true).
    #[serde(default = "default_true")]
    pub minify: bool,
}

fn default_bundle_outdir() -> String {
    "dist".to_string()
}

fn default_true() -> bool {
    true
}

#[cfg(test)]
mod tests {
    use super::*;

    fn project(text: &str) -> ProjectConfig {
        ron_options().from_str(text).unwrap()
    }

    fn server(text: &str) -> ServerConfig {
        ron_options().from_str(text).unwrap()
    }

    #[test]
    fn empty_project_config_is_default() {
        let cfg = project("()");
        assert!(cfg.publish.server.is_none());
        assert!(cfg.publish.site.is_none());
        assert!(cfg.build.is_none());
        assert!(cfg.bundle.is_none());
        // Routing defaults: schema v1, the single default index candidate.
        assert_eq!(cfg.routing.version, 1);
        assert_eq!(cfg.routing.index, vec!["index.html".to_string()]);
    }

    #[test]
    fn serve_signer_config_parses_and_maps_each_backend() {
        use boatramp_core::cose::TokenAlg;
        use boatramp_server::signer::SignerConfig;

        // RON-native enum tagging (`Vault(...)`); `IMPLICIT_SOME` lets the optional
        // fields (region) take a bare value or be omitted (→ None). This is the
        // exact RON documented in the Authentication guide.
        let vault = server(
            r#"( serve: ( signer: Vault(
                address: "https://vault.example:8200",
                key: "boatramp-root",
                token_env: "VAULT_TOKEN",
                alg: Ed25519,
            ) ) )"#,
        );
        match vault.serve.unwrap().signer.unwrap().to_signer_config() {
            SignerConfig::Vault {
                address,
                key,
                token_env,
                alg,
            } => {
                assert_eq!(address, "https://vault.example:8200");
                assert_eq!(key, "boatramp-root");
                assert_eq!(token_env, "VAULT_TOKEN");
                assert_eq!(alg, TokenAlg::Ed25519);
            }
            other => panic!("expected Vault, got {other:?}"),
        }

        // AWS KMS: region omitted → None; PKCS#11: alg omitted → the ES256 default.
        let aws =
            server(r#"( serve: ( signer: AwsKms(key_id: "arn:aws:kms:eu-west-1:1:key/abc") ) )"#);
        assert!(matches!(
            aws.serve.unwrap().signer.unwrap().to_signer_config(),
            SignerConfig::AwsKms { region: None, .. }
        ));

        let hsm = server(
            r#"( serve: ( signer: Pkcs11(
                module: "/usr/lib/softhsm/libsofthsm2.so",
                token_label: "boatramp",
                key_label: "root",
                pin_env: "HSM_PIN",
            ) ) )"#,
        );
        match hsm.serve.unwrap().signer.unwrap().to_signer_config() {
            SignerConfig::Pkcs11 { alg, .. } => assert_eq!(alg, TokenAlg::Es256),
            other => panic!("expected Pkcs11, got {other:?}"),
        }
    }

    #[test]
    fn project_config_parses_publish_build_and_routing() {
        let cfg = project(
            r#"(
                publish: ( server: "http://127.0.0.1:8080", site: "demo" ),
                build: ( command: "npm run build", output: "dist" ),
                routing: (
                    clean_urls: true,
                    redirects: [ (from: "/old/:slug", to: "/new/:slug", status: 301) ],
                ),
            )"#,
        );
        assert_eq!(cfg.publish.server.as_deref(), Some("http://127.0.0.1:8080"));
        assert_eq!(cfg.publish.site.as_deref(), Some("demo"));
        let build = cfg.build.unwrap();
        assert_eq!(build.command, "npm run build");
        assert_eq!(build.output.as_deref(), Some("dist"));
        assert!(cfg.routing.clean_urls);
        assert_eq!(cfg.routing.redirects.len(), 1);
        assert_eq!(cfg.routing.redirects[0].status, 301);
    }

    #[test]
    fn project_config_rejects_bad_routing_pattern() {
        // The same compile-check `load` runs: a bad route pattern is an error.
        let cfg = project(r#"( routing: ( redirects: [ (from: "/a/**/b/**", to: "/x") ] ) )"#);
        assert!(cfg.routing.compile_check().is_err());
    }

    #[test]
    fn empty_server_config_has_no_sections() {
        let cfg = server("()");
        assert!(cfg.serve.is_none());
        assert!(cfg.handlers.is_none());
        assert!(cfg.cluster.is_none());
        assert!(cfg.security.is_none());
    }

    #[test]
    fn security_section_parses_and_resolves() {
        // A profile plus an override that wins over it.
        let cfg = server(
            r#"(
                security: (
                    profile: "dev",
                    overrides: (
                        oidc_require_audience: true,
                        max_upload_bytes: 0,
                    ),
                )
            )"#,
        );
        let posture = cfg.security.unwrap().resolve().expect("resolves");
        // `dev` is loose...
        assert!(posture.allow_unauthenticated_public_bind);
        // ...but the explicit override wins over the profile.
        assert!(posture.oidc_require_audience);
        assert_eq!(posture.max_upload_bytes, 0); // unlimited
    }

    #[test]
    fn cluster_section_parses_the_dynamic_join_shape() {
        let cfg = server(
            r#"(
                cluster: (
                    listen: "10.0.0.2:7000",
                    root_pubkeys: ["es256:03a1"],
                    seeds: ["https://10.0.0.1:8080"],
                    join_token: "env:BOATRAMP_JOIN_TOKEN",
                ),
            )"#,
        );
        let cluster = cfg.cluster.unwrap();
        assert_eq!(
            cluster.listen,
            "10.0.0.2:7000".parse::<std::net::SocketAddr>().unwrap()
        );
        assert_eq!(cluster.root_pubkeys, vec!["es256:03a1".to_string()]);
        assert_eq!(cluster.seeds, vec!["https://10.0.0.1:8080".to_string()]);
        assert_eq!(
            cluster.join_token.as_deref(),
            Some("env:BOATRAMP_JOIN_TOKEN")
        );
        // store_dir defaults to None (→ <data-dir>/raft at serve time).
        assert!(cluster.store_dir.is_none());
    }

    #[test]
    fn cluster_section_founds_with_just_a_listen_addr() {
        // A founder needs no seeds/token — just where to bind the mesh.
        let cfg = server(r#"( cluster: ( listen: "0.0.0.0:7000" ) )"#);
        let cluster = cfg.cluster.unwrap();
        assert!(cluster.seeds.is_empty());
        assert!(cluster.root_pubkeys.is_empty());
        assert!(cluster.join_token.is_none());
    }

    #[test]
    fn sql_binding_single_node_defaults() {
        // A bare section (or none) means single-node: no url, default dir.
        let cfg = server(r#"( handlers: ( bindings: ( sql: () ) ) )"#);
        let sql = cfg.handlers.unwrap().bindings.sql.unwrap();
        assert!(sql.url.is_none());
        assert!(sql.dir.is_none());
    }

    #[test]
    fn sql_binding_single_node_custom_dir() {
        let cfg =
            server(r#"( handlers: ( bindings: ( sql: ( dir: "/var/lib/boatramp/sql" ) ) ) )"#);
        let sql = cfg.handlers.unwrap().bindings.sql.unwrap();
        assert_eq!(sql.dir.as_deref(), Some(Path::new("/var/lib/boatramp/sql")));
        assert!(sql.url.is_none());
    }

    #[test]
    fn sql_binding_cluster() {
        let cfg = server(
            r#"(
                handlers: ( bindings: ( sql: (
                    url: "http://sqld:8080",
                    admin_url: "http://sqld:9090",
                    token_env: "BOATRAMP_SQL_TOKEN",
                ) ) ),
            )"#,
        );
        let sql = cfg.handlers.unwrap().bindings.sql.unwrap();
        assert_eq!(sql.url.as_deref(), Some("http://sqld:8080"));
        assert_eq!(sql.admin_url.as_deref(), Some("http://sqld:9090"));
        assert_eq!(sql.token_env.as_deref(), Some("BOATRAMP_SQL_TOKEN"));
        assert_eq!(sql.admin_token_env, None);
    }

    #[test]
    fn sql_binding_preview_policy() {
        let cfg = server(
            r#"(
                handlers: ( bindings: ( sql: (
                    preview_mode: "branch",
                    preview_init: "/etc/boatramp/seed.sql",
                ) ) ),
            )"#,
        );
        let sql = cfg.handlers.unwrap().bindings.sql.unwrap();
        assert_eq!(sql.preview_mode.as_deref(), Some("branch"));
        assert_eq!(
            sql.preview_init.as_deref(),
            Some(Path::new("/etc/boatramp/seed.sql"))
        );
    }

    #[test]
    fn sql_binding_external_databases() {
        let cfg = server(
            r#"(
                handlers: ( bindings: ( sql: (
                    databases: {
                        "analytics": (
                            kind: "postgres",
                            url_env: "ANALYTICS_PG_URL",
                            pool_max: 16,
                            read_only: true,
                        ),
                        "events": (
                            kind: "mysql",
                            url_env: "EVENTS_MYSQL_URL",
                            read_url_env: "EVENTS_MYSQL_REPLICA_URL",
                            allow_preview: true,
                        ),
                    },
                ) ) ),
            )"#,
        );
        let sql = cfg.handlers.unwrap().bindings.sql.unwrap();
        assert_eq!(sql.databases.len(), 2);

        let analytics = &sql.databases["analytics"];
        assert_eq!(analytics.kind, "postgres");
        assert_eq!(analytics.url_env, "ANALYTICS_PG_URL");
        assert_eq!(analytics.pool_max, Some(16));
        assert!(analytics.read_only);
        assert!(!analytics.allow_preview);
        assert!(analytics.read_url_env.is_none());

        let events = &sql.databases["events"];
        assert_eq!(events.kind, "mysql");
        assert_eq!(
            events.read_url_env.as_deref(),
            Some("EVENTS_MYSQL_REPLICA_URL")
        );
        assert!(events.allow_preview);
        assert!(!events.read_only);
    }

    /// Path to a file at the repo root (two levels up from this crate).
    fn repo_root_file(name: &str) -> PathBuf {
        Path::new(env!("CARGO_MANIFEST_DIR"))
            .join("../..")
            .join(name)
    }

    #[test]
    fn shipped_project_example_parses() {
        // The example we ship must always parse + compile-check, so it can't drift
        // from the schema.
        let text = std::fs::read_to_string(repo_root_file("examples/site/project.cfg.example"))
            .expect("example project config is present");
        let cfg = ProjectConfig::parse(&text).expect("example project config parses");
        assert_eq!(cfg.publish.server.as_deref(), Some("http://127.0.0.1:8080"));
        assert_eq!(cfg.build.as_ref().unwrap().command, "npm run build");
        assert_eq!(
            cfg.routing.error_documents.get(&404).map(String::as_str),
            Some("/404.html")
        );
    }

    #[test]
    fn shipped_server_example_parses() {
        let text = std::fs::read_to_string(repo_root_file("boatramp.cfg.example"))
            .expect("example server config is present");
        let cfg = ServerConfig::parse(&text).expect("example server config parses");
        let serve = cfg.serve.expect("example sets a serve section");
        assert_eq!(
            serve.addr,
            Some("0.0.0.0:8080".parse::<std::net::SocketAddr>().unwrap())
        );
    }

    #[test]
    fn secrets_section_parses_local_and_vault() {
        let local = server(r#"( secrets: ( envelope: "local", kek_file: "/k/kek" ) )"#)
            .secrets
            .expect("secrets section");
        assert_eq!(local.envelope, "local");
        assert_eq!(
            local.kek_file.as_deref(),
            Some(std::path::Path::new("/k/kek"))
        );

        let vault = server(
            r#"( secrets: ( envelope: "vault", vault: ( addr: "https://vault:8200", key: "certs" ) ) )"#,
        )
        .secrets
        .expect("secrets section");
        let v = vault.vault.expect("vault subsection");
        assert_eq!(v.addr, "https://vault:8200");
        assert_eq!(v.key, "certs");
        // The token env defaults to VAULT_TOKEN and is never in the file.
        assert_eq!(v.token_env, "VAULT_TOKEN");
    }

    #[test]
    fn serve_section_partial_parses() {
        // A partial `serve` section parses — unset fields take their defaults.
        let cfg = server(r#"( serve: ( addr: "0.0.0.0:8080", protect_previews: true ) )"#);
        let serve = cfg.serve.unwrap();
        assert_eq!(
            serve.addr,
            Some("0.0.0.0:8080".parse::<std::net::SocketAddr>().unwrap())
        );
        assert!(serve.protect_previews);
        assert!(!serve.cluster_rate_limit);
        assert!(serve.data_dir.is_none());
    }

    #[test]
    fn serve_console_config_parses() {
        // Absent ⇒ no console.
        let cfg = server(r#"( serve: ( addr: "0.0.0.0:8080" ) )"#);
        assert!(cfg.serve.unwrap().console.is_none());
        // Explicit console block with host + path.
        let cfg = server(
            r#"( serve: ( console: (
                enabled: true,
                host: "console.example.com",
                path: "/_console",
            ) ) )"#,
        );
        let console = cfg.serve.unwrap().console.unwrap();
        assert!(console.enabled);
        assert_eq!(console.host.as_deref(), Some("console.example.com"));
        assert_eq!(console.path.as_deref(), Some("/_console"));
        // Bare `enabled` ⇒ host/path take their (server-side) defaults.
        let cfg = server(r#"( serve: ( console: ( enabled: true ) ) )"#);
        let console = cfg.serve.unwrap().console.unwrap();
        assert!(console.enabled);
        assert!(console.host.is_none() && console.path.is_none());
    }
}