#![forbid(unsafe_code)]
// SPDX-License-Identifier: MPL-2.0 OR MIT
// Copyright 2024 AffineScript Contributors

//! AffineScript Package Manager
//!
//! A workspace-aware, Cargo-inspired package manager for AffineScript.
//!
//! # Features
//!
//! - Dependency resolution with version constraints
//! - Workspace support for monorepos
//! - Content-addressed storage (like pnpm)
//! - Lock file for reproducibility
//! - Build script support

use clap::{Parser, Subcommand};

mod build;
mod config;
mod lockfile;
mod manifest;
mod registry;
mod resolve;
mod storage;
mod workspace;

#[derive(Parser)]
#[command(name = "affine")]
#[command(about = "AffineScript package manager", long_about = None)]
#[command(version)]
struct Cli {
    #[command(subcommand)]
    command: Commands,
}

#[derive(Subcommand)]
enum Commands {
    /// Create a new package
    New {
        /// Package name
        name: String,
        /// Create a library instead of a binary
        #[arg(long)]
        lib: bool,
    },

    /// Initialize a package in the current directory
    Init {
        /// Package name (defaults to directory name)
        #[arg(long)]
        name: Option<String>,
        /// Create a library instead of a binary
        #[arg(long)]
        lib: bool,
    },

    /// Build the current package
    Build {
        /// Build in release mode
        #[arg(long)]
        release: bool,
        /// Build only the specified package
        #[arg(short, long)]
        package: Option<String>,
    },

    /// Check the current package for errors
    Check {
        /// Check only the specified package
        #[arg(short, long)]
        package: Option<String>,
    },

    /// Run the current package
    Run {
        /// Run in release mode
        #[arg(long)]
        release: bool,
        /// Arguments to pass to the program
        #[arg(trailing_var_arg = true)]
        args: Vec<String>,
    },

    /// Run tests
    Test {
        /// Test name filter
        filter: Option<String>,
        /// Run in release mode
        #[arg(long)]
        release: bool,
    },

    /// Add a dependency
    Add {
        /// Dependency to add (name or name@version)
        dependency: String,
        /// Add as dev dependency
        #[arg(long)]
        dev: bool,
        /// Add as build dependency
        #[arg(long)]
        build: bool,
    },

    /// Remove a dependency
    Remove {
        /// Dependency to remove
        dependency: String,
    },

    /// Update dependencies
    Update {
        /// Package to update (updates all if not specified)
        package: Option<String>,
    },

    /// Install dependencies
    Install,

    /// Publish package to registry
    Publish {
        /// Don't actually publish, just verify
        #[arg(long)]
        dry_run: bool,
    },

    /// Search for packages
    Search {
        /// Search query
        query: String,
    },

    /// Show package information
    Info {
        /// Package name
        package: String,
    },

    /// Clean build artifacts
    Clean,

    /// Format source code
    Fmt {
        /// Check formatting without changing files
        #[arg(long)]
        check: bool,
    },

    /// Run linter
    Lint {
        /// Auto-fix issues where possible
        #[arg(long)]
        fix: bool,
    },

    /// Generate documentation
    Doc {
        /// Open documentation in browser
        #[arg(long)]
        open: bool,
    },
}

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    // Initialize logging
    tracing_subscriber::fmt()
        .with_env_filter(
            tracing_subscriber::EnvFilter::from_default_env()
                .add_directive(tracing::Level::INFO.into()),
        )
        .init();

    let cli = Cli::parse();

    match cli.command {
        Commands::New { name, lib } => {
            // TODO: Phase 8 implementation
            // - [ ] Create directory structure
            // - [ ] Generate affine.toml
            // - [ ] Create src/main.afs or src/lib.afs
            println!("Creating new {} package: {}", if lib { "library" } else { "binary" }, name);
        }

        Commands::Init { name, lib } => {
            // TODO: Phase 8 implementation
            // - [ ] Generate affine.toml in current directory
            // - [ ] Create src/ directory
            let _ = (name, lib);
            println!("Initializing package in current directory");
        }

        Commands::Build { release, package } => {
            // TODO: Phase 8 implementation
            // - [ ] Load manifest
            // - [ ] Resolve dependencies
            // - [ ] Compile all packages
            let _ = (release, package);
            println!("Building...");
        }

        Commands::Check { package } => {
            // TODO: Phase 8 implementation
            // - [ ] Type check without codegen
            let _ = package;
            println!("Checking...");
        }

        Commands::Run { release, args } => {
            // TODO: Phase 8 implementation
            // - [ ] Build if needed
            // - [ ] Run the binary
            let _ = (release, args);
            println!("Running...");
        }

        Commands::Test { filter, release } => {
            // TODO: Phase 8 implementation
            // - [ ] Find test functions
            // - [ ] Build test binary
            // - [ ] Run tests
            let _ = (filter, release);
            println!("Testing...");
        }

        Commands::Add { dependency, dev, build } => {
            // TODO: Phase 8 implementation
            // - [ ] Parse dependency spec
            // - [ ] Resolve version
            // - [ ] Update manifest
            // - [ ] Update lockfile
            let _ = (dev, build);
            println!("Adding dependency: {}", dependency);
        }

        Commands::Remove { dependency } => {
            // TODO: Phase 8 implementation
            // - [ ] Remove from manifest
            // - [ ] Update lockfile
            println!("Removing dependency: {}", dependency);
        }

        Commands::Update { package } => {
            // TODO: Phase 8 implementation
            // - [ ] Resolve latest compatible versions
            // - [ ] Update lockfile
            let _ = package;
            println!("Updating dependencies...");
        }

        Commands::Install => {
            // TODO: Phase 8 implementation
            // - [ ] Read lockfile
            // - [ ] Download missing packages
            // - [ ] Link to content store
            println!("Installing dependencies...");
        }

        Commands::Publish { dry_run } => {
            // TODO: Phase 8 implementation
            // - [ ] Verify package
            // - [ ] Build tarball
            // - [ ] Upload to registry
            let _ = dry_run;
            println!("Publishing...");
        }

        Commands::Search { query } => {
            // TODO: Phase 8 implementation
            // - [ ] Query registry API
            // - [ ] Display results
            println!("Searching for: {}", query);
        }

        Commands::Info { package } => {
            // TODO: Phase 8 implementation
            // - [ ] Fetch package info
            // - [ ] Display metadata
            println!("Package info: {}", package);
        }

        Commands::Clean => {
            // TODO: Phase 8 implementation
            // - [ ] Remove target/ directory
            println!("Cleaning...");
        }

        Commands::Fmt { check } => {
            // TODO: Phase 8 implementation
            // - [ ] Run formatter
            let _ = check;
            println!("Formatting...");
        }

        Commands::Lint { fix } => {
            // TODO: Phase 8 implementation
            // - [ ] Run linter
            let _ = fix;
            println!("Linting...");
        }

        Commands::Doc { open } => {
            // TODO: Phase 8 implementation
            // - [ ] Generate docs
            // - [ ] Open in browser if requested
            let _ = open;
            println!("Generating documentation...");
        }
    }

    Ok(())
}

// TODO: Phase 8 implementation
// - [ ] Implement manifest parsing (affine.toml)
// - [ ] Implement dependency resolution (SAT solver or PubGrub)
// - [ ] Implement content-addressed storage
// - [ ] Implement lockfile format
// - [ ] Implement registry client
// - [ ] Implement build orchestration
// - [ ] Add workspace support
// - [ ] Add feature flags
// - [ ] Add build scripts
