#!/usr/bin/env nu

# Create Distribution Manifest - Scan & List Available Plugins
#
# Scans the distribution directory for available plugin binaries
# and creates a manifest file for the installer to use.
#
# Usage:
#   create_distribution_manifest.nu              # Scan current directory
#   create_distribution_manifest.nu ./dist       # Scan specific directory
#   create_distribution_manifest.nu --output manifest.json

def main [
    source_dir: string = "."     # Directory to scan for plugins
    --output: string = "DISTRIBUTION_MANIFEST.json"  # Output manifest file
] {
    log_info "📋 Distribution Manifest Generator"
    log_info "=================================================================="

    log_info $"\n🔍 Step 1: Scanning directory: ($source_dir)"

    # Find all plugin binaries
    let plugins = scan_for_plugins $source_dir

    if ($plugins | length) == 0 {
        log_error "No plugin binaries found!"
        log_error $"Expected: ($source_dir)/nu_plugin_*"
        return
    }

    log_success $"Found ($plugins | length) plugin\(s\)"
    print ""

    # Display found plugins
    for plugin in $plugins {
        log_info $"  ✓ ($plugin.name)"
    }

    # Create manifest
    log_info $"\n📝 Step 2: Creating manifest..."
    let manifest = {
        version: "1.0.0"
        created: (date now | format date "%Y-%m-%dT%H:%M:%SZ")
        source_directory: $source_dir
        total_plugins: ($plugins | length)
        plugins: $plugins
    }

    # Save manifest
    log_info $"\n💾 Step 3: Saving to ($output)..."
    try {
        $manifest | to json | save -f $output
        log_success $"Manifest saved: ($output)"
    } catch {|err|
        log_error $"Failed to save manifest: ($err.msg)"
        return
    }

    # Summary
    log_info "\n=================================================================="
    log_success "✅ Manifest created!"
    log_info ""
    log_info "Next steps:"
    log_info $"  1. Include ($output) in distribution"
    log_info "  2. Run installer with: install_from_manifest.nu --manifest $output"
}

# Scan directory for plugins
def scan_for_plugins [source_dir: string]: nothing -> list<record> {
    mut found = []

    try {
        let all_files = ls $source_dir

        let plugin_files = $all_files
            | where type == "file"
            | where {|row|
                let basename = $row.name | path basename
                $basename =~ "^nu_plugin_"
            }

        let plugins = $plugin_files | each {|row|
            let basename = $row.name | path basename
            let purpose = get_plugin_purpose $basename
            let file_size = $row.size

            {
                name: $basename
                purpose: $purpose
                path: $row.name
                size_bytes: $file_size
            }
        }

        $found = $plugins
    } catch {|err|
        log_error $"Error scanning directory: ($err.msg)"
    }

    $found
}

# Get plugin purpose/description
def get_plugin_purpose [name: string]: nothing -> string {
    let purposes = {
        "nu_plugin_auth": "Authentication (JWT, MFA)"
        "nu_plugin_kms": "Encryption & KMS"
        "nu_plugin_orchestrator": "Orchestration operations"
        "nu_plugin_kcl": "KCL configuration"
        "nu_plugin_tera": "Template rendering"
        "nu_plugin_highlight": "Syntax highlighting"
        "nu_plugin_clipboard": "Clipboard operations"
        "nu_plugin_image": "Image processing"
        "nu_plugin_hashes": "Hash functions"
        "nu_plugin_qr_maker": "QR code generation"
        "nu_plugin_fluent": "Localization"
        "nu_plugin_desktop_notifications": "Desktop notifications"
        "nu_plugin_port_extension": "Port extensions"
        "nu_plugin_polars": "Data analysis"
        "nu_plugin_formats": "Format conversion"
        "nu_plugin_inc": "Increment operations"
        "nu_plugin_gstat": "Git status"
        "nu_plugin_query": "Advanced querying"
        "nu_plugin_custom_values": "Custom values"
        "nu_plugin_example": "Example template"
        "nu_plugin_stress_internals": "Stress testing"
    }

    $purposes | get --optional $name | default "Nushell plugin"
}

# Logging
def log_info [msg: string] {
    print $"ℹ️  ($msg)"
}

def log_success [msg: string] {
    print $"✅ ($msg)"
}

def log_error [msg: string] {
    print $"❌ ($msg)"
}

main