canic-cli 0.35.7

use crate::{
    cli::clap::{parse_matches, string_option},
    cli::defaults::{default_icp, local_network},
    cli::globals::{internal_icp_arg, internal_network_arg},
    cli::help::print_help_or_version,
    version_text,
};
use canic_host::{
    icp::IcpCli,
    icp_config::{DEFAULT_LOCAL_GATEWAY_PORT, configured_local_gateway_port},
    install_root::discover_current_canic_config_choices,
    installed_fleet::{
        InstalledFleetError, InstalledFleetRequest, read_installed_fleet_state,
        resolve_installed_fleet,
    },
    registry::RegistryEntry,
    release_set::{
        configured_bootstrap_roles, configured_fleet_name, configured_fleet_roles,
        display_workspace_path, workspace_root,
    },
    table::{ColumnAlign, render_table},
};
use clap::Command as ClapCommand;
use std::{collections::BTreeSet, ffi::OsString, path::Path};
use thiserror::Error as ThisError;

const FLEET_HEADER: &str = "FLEET";
const DEPLOYED_HEADER: &str = "DEPLOYED";
const CONFIG_HEADER: &str = "CONFIG";
const CANISTERS_HEADER: &str = "CANISTERS";
const ROOT_HEADER: &str = "ROOT";
const LOCAL_LOST_DEPLOYMENT: &str = "lost";
const LOCAL_LOST_NOTE: &str = "Note: local ICP CLI replica state is not persistent; a lost local fleet means the recorded root is gone. Run `canic install <fleet>` to recreate it.";
const STATUS_HELP_AFTER: &str = "\
Examples:
  canic status

Note:
  The local ICP CLI replica does not persist canister state across stop/start.
  If a local fleet is shown as lost, run `canic install <fleet>` to recreate it.";

///
/// StatusCommandError
///

#[derive(Debug, ThisError)]
pub enum StatusCommandError {
    #[error("{0}")]
    Usage(String),

    #[error(transparent)]
    Host(#[from] Box<dyn std::error::Error>),
}

///
/// StatusOptions
///

#[derive(Clone, Debug, Eq, PartialEq)]
struct StatusOptions {
    network: String,
    icp: String,
}

///
/// StatusReport
///

#[derive(Clone, Debug, Eq, PartialEq)]
struct StatusReport {
    network: String,
    replica: ReplicaStatus,
    replica_port: String,
    icp_cli: String,
    fleets: Vec<StatusFleetRow>,
}

///
/// ReplicaStatus
///

#[derive(Clone, Debug, Eq, PartialEq)]
enum ReplicaStatus {
    Running,
    Stopped,
    Error(String),
}

///
/// StatusFleetRow
///

#[derive(Clone, Debug, Eq, PartialEq)]
struct StatusFleetRow {
    fleet: String,
    deployed: String,
    config: String,
    canisters: String,
    root: String,
}

pub fn run<I>(args: I) -> Result<(), StatusCommandError>
where
    I: IntoIterator<Item = OsString>,
{
    let args = args.into_iter().collect::<Vec<_>>();
    if print_help_or_version(&args, usage, version_text()) {
        return Ok(());
    }

    let options = StatusOptions::parse(args)?;
    let report = load_status_report(&options)?;
    println!("{}", render_status_report(&report));
    Ok(())
}

impl StatusOptions {
    fn parse<I>(args: I) -> Result<Self, StatusCommandError>
    where
        I: IntoIterator<Item = OsString>,
    {
        let matches = parse_matches(status_command(), args)
            .map_err(|_| StatusCommandError::Usage(usage()))?;

        Ok(Self {
            network: string_option(&matches, "network").unwrap_or_else(local_network),
            icp: string_option(&matches, "icp").unwrap_or_else(default_icp),
        })
    }
}

fn load_status_report(options: &StatusOptions) -> Result<StatusReport, StatusCommandError> {
    let workspace_root = workspace_root()?;
    let choices = discover_current_canic_config_choices()?;
    let icp_cli = load_icp_cli_version(options);
    let replica = load_replica_status(options);
    let verify_local_roots =
        options.network == local_network() && matches!(replica, ReplicaStatus::Running);
    let mut fleets = choices
        .iter()
        .map(|path| status_fleet_row(&workspace_root, path, options, verify_local_roots))
        .collect::<Vec<_>>();
    fleets.sort_by(|left, right| left.fleet.cmp(&right.fleet));

    Ok(StatusReport {
        network: options.network.clone(),
        replica,
        replica_port: load_replica_port(),
        icp_cli,
        fleets,
    })
}

fn load_icp_cli_version(options: &StatusOptions) -> String {
    match IcpCli::new(&options.icp, None, None).version() {
        Ok(version) => version,
        Err(err) => format!("unavailable ({err})"),
    }
}

fn load_replica_status(options: &StatusOptions) -> ReplicaStatus {
    match IcpCli::new(&options.icp, None, None).local_replica_project_running(false) {
        Ok(true) => ReplicaStatus::Running,
        Ok(false) => ReplicaStatus::Stopped,
        Err(err) => ReplicaStatus::Error(err.to_string()),
    }
}

fn load_replica_port() -> String {
    configured_local_gateway_port()
        .unwrap_or(DEFAULT_LOCAL_GATEWAY_PORT)
        .to_string()
}

fn status_fleet_row(
    workspace_root: &Path,
    path: &Path,
    options: &StatusOptions,
    verify_local_root: bool,
) -> StatusFleetRow {
    let Ok(fleet) = configured_fleet_name(path) else {
        return StatusFleetRow {
            fleet: "invalid config".to_string(),
            deployed: "error".to_string(),
            config: display_workspace_path(workspace_root, path),
            canisters: "invalid".to_string(),
            root: "-".to_string(),
        };
    };
    let install_state = read_installed_fleet_state(&options.network, &fleet);
    let configured_roles = configured_fleet_roles(path);
    let bootstrap_roles = configured_bootstrap_roles(path);
    let (deployed, root) = match install_state {
        Ok(state) => (
            deployed_label(
                &fleet,
                &options.network,
                &options.icp,
                &state.root_canister_id,
                verify_local_root,
                bootstrap_roles.as_deref().unwrap_or(&[]),
            ),
            state.root_canister_id,
        ),
        Err(InstalledFleetError::NoInstalledFleet { .. }) => ("no".to_string(), "-".to_string()),
        Err(_) => ("error".to_string(), "-".to_string()),
    };

    StatusFleetRow {
        canisters: configured_roles
            .map_or_else(|_| "invalid".to_string(), |roles| roles.len().to_string()),
        config: display_workspace_path(workspace_root, path),
        deployed,
        fleet,
        root,
    }
}

fn deployed_label(
    fleet: &str,
    network: &str,
    icp: &str,
    root: &str,
    verify_local_root: bool,
    configured_roles: &[String],
) -> String {
    if network != local_network() {
        return "yes".to_string();
    }
    if !verify_local_root {
        return "unknown".to_string();
    }

    match resolve_installed_fleet(&InstalledFleetRequest {
        fleet: fleet.to_string(),
        network: network.to_string(),
        icp: icp.to_string(),
        detect_lost_local_root: true,
    }) {
        Ok(resolution) if resolution.state.root_canister_id == root => {
            classify_local_deployment(configured_roles, &resolution.registry.entries).to_string()
        }
        Err(InstalledFleetError::LostLocalFleet { .. }) => LOCAL_LOST_DEPLOYMENT.to_string(),
        Ok(_) | Err(_) => "error".to_string(),
    }
}

fn classify_local_deployment(
    configured_roles: &[String],
    registry: &[RegistryEntry],
) -> &'static str {
    let deployed_roles = registry
        .iter()
        .filter_map(|entry| entry.role.as_deref())
        .collect::<BTreeSet<_>>();

    if configured_roles
        .iter()
        .all(|role| deployed_roles.contains(role.as_str()))
    {
        "yes"
    } else {
        "partial"
    }
}

fn render_status_report(report: &StatusReport) -> String {
    let configured = report.fleets.len();
    let deployed = deployed_count(&report.fleets);
    let mut lines = vec![
        format!("Replica: {}", report.replica.label(&report.replica_port)),
        format!("ICP CLI: {}", report.icp_cli),
        format!(
            "Fleets:  {deployed}/{configured} deployed (network {})",
            report.network
        ),
    ];

    if !report.fleets.is_empty() {
        lines.push(String::new());
        lines.push(render_fleet_table(&report.fleets));
    }
    if has_lost_local_fleet(report) {
        lines.push(String::new());
        lines.push(LOCAL_LOST_NOTE.to_string());
    }

    lines.join("\n")
}

fn has_lost_local_fleet(report: &StatusReport) -> bool {
    report.network == "local"
        && report
            .fleets
            .iter()
            .any(|fleet| fleet.deployed == LOCAL_LOST_DEPLOYMENT)
}

fn deployed_count(fleets: &[StatusFleetRow]) -> usize {
    fleets
        .iter()
        .filter(|fleet| fleet.deployed == "yes")
        .count()
}

fn render_fleet_table(fleets: &[StatusFleetRow]) -> String {
    let rows = fleets
        .iter()
        .map(|fleet| {
            [
                fleet.fleet.clone(),
                fleet.deployed.clone(),
                fleet.config.clone(),
                fleet.canisters.clone(),
                fleet.root.clone(),
            ]
        })
        .collect::<Vec<_>>();
    render_table(
        &[
            FLEET_HEADER,
            DEPLOYED_HEADER,
            CONFIG_HEADER,
            CANISTERS_HEADER,
            ROOT_HEADER,
        ],
        &rows,
        &[ColumnAlign::Left; 5],
    )
}

impl ReplicaStatus {
    fn label(&self, port: &str) -> String {
        match self {
            Self::Running => format!("running (local, port {port})"),
            Self::Stopped => format!("stopped (local, port {port})"),
            Self::Error(err) => format!("unknown (local, port {port}): {err}"),
        }
    }
}

fn status_command() -> ClapCommand {
    ClapCommand::new("status")
        .bin_name("canic status")
        .about("Show quick Canic project status")
        .disable_help_flag(true)
        .arg(internal_network_arg())
        .arg(internal_icp_arg())
        .after_help(STATUS_HELP_AFTER)
}

fn usage() -> String {
    let mut command = status_command();
    command.render_help().to_string()
}

#[cfg(test)]
mod tests;