skillpack 0.12.1

//! clap argument parsing + subcommand dispatch. Per design §6.3, supports a
//! `--non-interactive` flag for CI, plus `--verbose` / `--debug` diagnostics.

use std::path::PathBuf;

use clap::{Parser, Subcommand, ValueEnum};

#[derive(Debug, Parser)]
#[command(
    name = "skillpack",
    bin_name = "skillpack",
    version,
    about = "Generate and verify the agent-distribution layer for any OSS project (Claude Code, Cursor, Codex, OpenCode, GitHub Copilot, AGENTS.md)."
)]
pub struct Cli {
    #[command(subcommand)]
    pub command: Commands,

    /// Print what skillpack detected in the repo (introspection output).
    #[arg(long, global = true)]
    pub verbose: bool,

    /// Print every subprocess call skillpack makes.
    #[arg(long, global = true)]
    pub debug: bool,
}

#[derive(Debug, Subcommand)]
pub enum Commands {
    /// Scaffold the distribution layer (introspect → interview → generate).
    Init {
        /// Project root to operate on. Defaults to the current directory.
        #[arg(long, value_name = "DIR", default_value = ".")]
        root: PathBuf,

        /// Skip interactive prompts. Intended for CI — never offers to keep
        /// unverified output. Uses a committed `skillpack.toml` when present;
        /// otherwise bootstraps the intent from `--description`/`--trigger`/
        /// `--author` + `--invocation` or `--import` so the FIRST init can run
        /// on a fresh checkout without a TTY.
        #[arg(long)]
        non_interactive: bool,

        /// Accept the pre-commit verification and write files even when `verify`
        /// flags warnings. Critical (`fail`) results still block the write.
        /// Without this flag, any non-pass result prompts the user.
        #[arg(long)]
        accept_warnings: bool,

        /// Zero-interaction init: derive the intent entirely from the repo —
        /// description from the README, author from `git config`, license from
        /// the LICENSE file (or `--license`), invocation from the detected
        /// CLI — and write without any prompts. Pass `--trigger` to set the
        /// when-to-use phrases (otherwise the description hint is used), and
        /// `--import` for a pure library. Fails with an actionable message
        /// when something essential can't be derived (e.g. no README hint).
        #[arg(long)]
        auto: bool,

        /// One-sentence task description — `--non-interactive` bootstrap when
        /// no `skillpack.toml` exists (ignored when a config is present).
        #[arg(long, value_name = "TEXT")]
        description: Option<String>,

        /// Trigger phrase for `when_to_use`; repeatable (`--trigger a --trigger b`)
        /// and comma/semicolon-separated values are split. For `--non-interactive`
        /// bootstrap when no `skillpack.toml` exists (ignored when a config is
        /// present).
        #[arg(long, value_name = "PHRASE")]
        trigger: Vec<String>,

        /// Author name for plugin.json — `--non-interactive` bootstrap when no
        /// `skillpack.toml` exists (ignored when a config is present). Optional;
        /// omit and verify's `discovery.plugin.author` warns (advisory).
        #[arg(long, value_name = "NAME")]
        author: Option<String>,

        /// Exact CLI invocation for CLI projects — `--non-interactive` bootstrap
        /// when no `skillpack.toml` exists (ignored when a config is present).
        /// Pass exactly one of `--invocation` / `--import`.
        #[arg(long, value_name = "CMD")]
        invocation: Option<String>,

        /// Import pattern for library projects — `--non-interactive` bootstrap
        /// when no `skillpack.toml` exists (ignored when a config is present).
        /// Pass exactly one of `--invocation` / `--import`.
        #[arg(long, value_name = "PATTERN")]
        import: Option<String>,

        /// Override the license SPDX id for this run (writes it to skillpack.toml).
        #[arg(long, value_name = "SPDX")]
        license: Option<String>,

        /// Agent ecosystem(s) to generate distribution files for. Repeat to
        /// emit multiple: `--target claude --target cursor`. Defaults to
        /// `claude` only (backward compatible). Pass the special value
        /// `all` to emit every supported target.
        #[arg(long, num_args = 1.., value_name = "ECOSYSTEM")]
        target: Vec<String>,

        /// Overwrite an existing root-level `AGENTS.md` (the `--target agentsmd`
        /// target writes to repo root, not a skillpack-owned directory). Without
        /// `--force`, an existing `AGENTS.md` is skipped with a warning. Has no
        /// effect on other targets — their paths are always skillpack-owned.
        #[arg(long)]
        force: bool,

        /// Override one or more Tera templates from a directory of `.tera`
        /// files. Missing templates fall back to embedded defaults — override
        /// just the files you need. Filenames must match the templates/
        /// directory (e.g. `SKILL.md.tera`, `plugin.json.tera`).
        #[arg(long, value_name = "DIR")]
        template_dir: Option<PathBuf>,
    },
    /// Check the distribution files against the agent schemas + CLI drift.
    Verify {
        #[arg(long, value_name = "DIR", default_value = ".")]
        root: PathBuf,

        /// Output format. `human` (default) prints a readable report; `json`
        /// prints a machine-readable object with per-check ids for CI gating.
        #[arg(long, value_enum, default_value_t = crate::verify::OutputFormat::Human)]
        format: crate::verify::OutputFormat,

        /// Apply mechanical fixes for detected drift (e.g. regenerate a stale
        /// `.claude-plugin/plugin.json` whose `version` drifted from the
        /// project manifest). Surgical: only the file the drift lives in is
        /// rewritten — your hand-tailored `SKILL.md` / `marketplace.json`
        /// stay intact. After fixes are applied, verify re-runs and prints
        /// the post-fix report. Use `skillpack init` for wholesale regen.
        #[arg(long)]
        fix: bool,

        /// Minimum discoverability score (0–100) the verify run must reach
        /// to exit zero. Independent of `--fix`: if `--fix` is also passed,
        /// the gate runs against the post-fix report. Omitted by default —
        /// projects opt in to harder enforcement (a low score is otherwise
        /// surfaced but never fails the run). Useful as a CI gate: pair with
        /// `--format json` for a structured exit.
        #[arg(long, value_name = "N", value_parser = clap::value_parser!(u8).range(0..=100))]
        min_score: Option<u8>,
        /// Watch for file changes and re-run verify on each change (debounced).
        /// Useful during iterative SKILL.md / skillpack.toml edits — get
        /// instant feedback without manually re-running verify each time.
        /// Ctrl-C stops the watcher (terminates the process). Only valid
        /// mode prints a new report per cycle; JSON output isn't meaningful
        /// for a streaming watcher).
        #[arg(long)]
        watch: bool,

        /// Override embedded Tera templates during `--fix` re-rendering. Same
        /// semantics as `init --template-dir`. Without this flag, `--fix`
        /// always uses embedded templates — if you initialized with custom
        /// templates, pass the same `--template-dir` here or `--fix` will
        /// produce output that drifts from your custom-rendered files.
        #[arg(long, value_name = "DIR")]
        template_dir: Option<PathBuf>,
    },
    /// Diagnose why introspection chose `has_cli` / language as it did.
    /// Prints the detected profile + a chronological trace of the decision
    /// branches that fired (which candidate was tried, why it was rejected,
    /// what would make it succeed). Read-only — never writes files.
    Doctor {
        /// Project root to operate on. Defaults to the current directory.
        #[arg(long, value_name = "DIR", default_value = ".")]
        root: PathBuf,

        /// Output format. `human` (default) prints the readable diagnosis;
        /// `json` emits the serialized `ProjectProfile` (including the
        /// decision trace) for CI/scripts. Mirrors `verify --format`.
        #[arg(long, value_enum, default_value_t = crate::verify::OutputFormat::Human)]
        format: crate::verify::OutputFormat,
    },
    /// Incrementally regenerate distribution files from an existing
    /// `skillpack.toml` (no interview, no pre-commit verify gate — it's a
    /// refresh, not a scaffold). Re-introspects the repo, re-renders every
    /// target, and writes ONLY files whose content changed. For
    /// frontmatter-bearing files (`SKILL.md`, cursor `.mdc`, opencode
    /// `.md`) the body prose is preserved by splicing the fresh
    /// frontmatter onto the committed body — same surgery the auto-fix
    /// applies for `SKILL.md`. Note: the frontmatter block is regenerated
    /// wholesale, so any hand-tailored frontmatter fields skillpack
    /// doesn't manage (e.g. cursor `globs`, opencode `mode`) are
    /// overwritten. To preserve those, edit the template or keep them in
    /// `skillpack.toml`-driven fields.
    Update {
        /// Project root to operate on. Defaults to the current directory.
        #[arg(long, value_name = "DIR", default_value = ".")]
        root: PathBuf,

        /// Agent ecosystem(s) to regenerate for. Defaults to `claude`
        /// only. Pass `all` to refresh every supported target. Repeats.
        #[arg(long, num_args = 1.., value_name = "ECOSYSTEM")]
        target: Vec<String>,

        /// Overwrite an existing root-level `AGENTS.md` (same collision guard
        /// as `init --target agentsmd`). Without `--force`, an existing
        /// `AGENTS.md` is skipped with a warning. No effect on other targets.
        #[arg(long)]
        force: bool,

        /// Override one or more Tera templates from a directory of `.tera`
        /// files. Missing templates fall back to embedded defaults. Same
        /// semantics as `init --template-dir`.
        #[arg(long, value_name = "DIR")]
        template_dir: Option<PathBuf>,
    },
    /// Check whether distribution files are stale: re-render every target
    /// in memory, compare against on-disk content, report files that
    /// differ, and exit 1 if any do (0 if all clean). A CI gate for
    /// stale distribution files — run after `init`/`update` to verify
    /// committed artifacts match what skillpack would regenerate. Uses
    /// the same candidate computation as `update` (frontmatter splice
    /// for body files, wholesale overwrite for fully-generated files),
    /// so `diff` and `update` agree on what counts as drift.
    Diff {
        /// Project root to operate on. Defaults to the current directory.
        #[arg(long, value_name = "DIR", default_value = ".")]
        root: PathBuf,

        /// Agent ecosystem(s) to check. Defaults to `claude` only.
        /// Pass `all` to check every target. Repeats.
        #[arg(long, num_args = 1.., value_name = "ECOSYSTEM")]
        target: Vec<String>,

        /// Check `AGENTS.md` too (same collision guard as `update` —
        /// skipped without `--force` if it exists). No effect on other
        /// targets.
        #[arg(long)]
        force: bool,

        /// Override one or more Tera templates from a directory of `.tera`
        /// files. Missing templates fall back to embedded defaults. Same
        /// semantics as `init --template-dir`. Use when `diff` is checking
        /// a pack generated with custom templates.
        #[arg(long, value_name = "DIR")]
        template_dir: Option<PathBuf>,
    },
    /// Print shell completions to stdout for the given shell, so users can
    /// tab-complete `skillpack` flags and subcommands. Pipe the output into
    /// your shell's completion directory, e.g.
    /// `skillpack completions bash > ~/.local/share/bash-completion/completions/skillpack`.
    Completions {
        /// Shell to generate completions for.
        #[arg(value_enum)]
        shell: clap_complete::Shell,
    },
}

/// Which agent ecosystem to generate distribution files for.
/// Per design §10 (Phase 4: multi-ecosystem delivery).
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, clap::ValueEnum, Default)]
pub enum Target {
    /// Claude Code: `.claude-plugin/` + `skills/<name>/SKILL.md`.
    #[default]
    Claude,
    /// Cursor: `.cursor/rules/<name>.mdc` rule file.
    Cursor,
    Codex,
    /// OpenCode: `.opencode/agents/<name>.md` agent definition file.
    /// Per opencode.ai/docs/agents — frontmatter (`description` required,
    /// `mode`/`temperature`/`permissions` optional); no `.claude-plugin/`.
    #[clap(name = "opencode")]
    OpenCode,
    /// GitHub Copilot: `.github/copilot-instructions.md` custom instructions.
    /// Per docs.github.com/copilot — plain markdown, no frontmatter.
    Copilot,
    /// AGENTS.md: a root-level `AGENTS.md` instructions file read natively by
    /// 60k+ projects' agents (Codex, Cursor, Windsurf, Copilot, Aider, Zed,
    /// Warp, JetBrains Junie, Freebuff, etc.). Per agents.md (Linux Foundation
    /// stewarded) — plain markdown, no frontmatter, no required fields.
    #[clap(name = "agentsmd")]
    AgentsMd,
    /// CLAUDE.md: root-level instructions file read by Claude Code, Cline,
    /// Roo Code, and the Claude Code ecosystem of forks. Plain markdown.
    #[clap(name = "claude-md")]
    ClaudeMd,
    /// GEMINI.md: root-level instructions file read natively by the Gemini
    /// CLI. Per google-gemini.github.io/gemini-cli/docs/cli/gemini-md.html —
    /// plain markdown, no frontmatter.
    Gemini,
    /// Windsurf (Cascade): `.windsurf/rules/<name>.md` rule files with the
    /// same frontmatter shape as Cursor rules (`description` required,
    /// `globs`/`alwaysApply` optional). Per the Windsurf docs + the
    /// cursor↔windsurf converter projects.
    Windsurf,
    /// Aider: a root-level `CONVENTIONS.md` the aider coding agent reads for
    /// repo conventions. Plain markdown, no frontmatter.
    Aider,
}

/// Expand a list of targets, resolving the string `"all"` into every concrete
/// target. Called from `run_init_inner` after the init subcommand parses
/// `--target` values; the hidden `all` value clears here so dispatch sites
/// (`generate::run`, verify, fix) never see a synthetic variant.
pub fn resolve_targets(raw: &[String]) -> anyhow::Result<Vec<Target>> {
    let mut out = Vec::with_capacity(raw.len());
    for r in raw {
        if r == "all" {
            // Canonical order — `Target` declaration order minus the sentinel.
            out.extend([
                Target::Claude,
                Target::Cursor,
                Target::Codex,
                Target::OpenCode,
                Target::Copilot,
                Target::AgentsMd,
                Target::ClaudeMd,
                Target::Gemini,
                Target::Windsurf,
                Target::Aider,
            ]);
        } else if r == "freebuff" || r == "agents.md" || r == "agents-md" {
            out.push(Target::AgentsMd);
        } else {
            out.push(Target::from_str(r, true).map_err(|s| {
                anyhow::anyhow!(
                    "invalid --target `{s}`; expected claude|cursor|codex|opencode|copilot|agentsmd|claude-md|gemini|windsurf|aider|freebuff|all"
                )
            })?);
        }
    }
    // Dedup preserving canonical order — `--target all --target claude`
    // must not emit Claude twice (double-writes files).
    let mut seen = Vec::new();
    for t in out {
        if !seen.contains(&t) {
            seen.push(t);
        }
    }
    Ok(seen)
}

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

    #[test]
    fn resolve_targets_handles_freebuff_and_aliases() {
        let targets = resolve_targets(&["freebuff".to_string(), "agents.md".to_string()]).unwrap();
        assert_eq!(targets, vec![Target::AgentsMd]);

        let all = resolve_targets(&["all".to_string()]).unwrap();
        assert_eq!(all.len(), 10);
        assert!(all.contains(&Target::AgentsMd));
    }
}