#!/usr/bin/env nu

# Registry update tool - updates package manager registries
#
# Updates:
# - Homebrew formulas
# - APT/YUM repositories
# - Docker Hub descriptions
# - npm package registry
# - Cargo crates.io
# - GitHub registry packages

use std log

def main [
    --registries: string = "homebrew"          # Registries to update: homebrew,apt,yum,docker,npm,cargo,all
    --version: string = ""                     # Version to update to (auto-detected if empty)
    --package-urls: string = ""                # Comma-separated URLs to package files
    --registry-config: string = ""             # Registry configuration file
    --dry-run = false                          # Show what would be updated without doing it
    --auto-commit = false                      # Automatically commit and push registry updates
    --verbose                                   # Enable verbose logging
    --force                                   # Force updates even if version already exists
]
{

    let repo_root = ($env.PWD | path dirname | path dirname | path dirname)

    # Determine version if not provided
    let target_version = if $version == "" {
        detect_current_version $repo_root
    } else {
        $version
    }

    let target_registries = if $registries == "all" {
        ["homebrew", "apt", "yum", "docker", "npm", "cargo"]
    } else {
        ($registries | split row "," | each { str trim })
    }

    let registry_config = {
        registries: $target_registries
        version: $target_version
        package_urls: (if $package_urls == "" { [] } else { $package_urls | split row "," | each { str trim } })
        registry_config_file: (if $registry_config == "" { "" } else { $registry_config | path expand })
        dry_run: $dry_run
        auto_commit: $auto_commit
        verbose: $verbose
        force: $force
        repo_root: $repo_root
    }

    log info $"Starting registry updates with config: ($registry_config)"

    # Load registry configuration if provided
    let config_data = if $registry_config.registry_config_file != "" {
        load_registry_config $registry_config.registry_config_file
    } else {
        get_default_registry_config
    }

    # Update each registry
    let update_results = $registry_config.registries | each {|registry|
        update_registry $registry $registry_config $config_data
    }

    let summary = {
        total_registries: ($registry_config.registries | length)
        successful_updates: ($update_results | where status == "success" | length)
        failed_updates: ($update_results | where status == "failed" | length)
        skipped_updates: ($update_results | where status == "skipped" | length)
        version: $registry_config.version
        registry_config: $registry_config
        results: $update_results
    }

    if $summary.failed_updates > 0 {
        log error $"Registry updates completed with ($summary.failed_updates) failures"
        exit 1
    } else {
        if $registry_config.dry_run {
            log info $"Dry run completed - would update ($summary.total_registries) registries"
        } else {
            log info $"Registry updates completed successfully - ($summary.successful_updates) registries updated"
        }
    }

    return $summary
}

# Detect current version from git tags
def detect_current_version [repo_root: string]
{
    cd $repo_root

    let result = (do {
        git describe --tags --abbrev=0
    } | complete)

    if ($result.exit_code == 0) {
        let latest_tag = ($result.stdout | str trim)
        if $latest_tag != "" {
            # Remove 'v' prefix if present
            return ($latest_tag | str replace "^v" "")
        }
        return "0.1.0"
    } else {
        return "0.1.0"
    }
}

# Load registry configuration from file
def load_registry_config [config_file: string]
{
    if not ($config_file | path exists) {
        log warning $"Registry config file not found: ($config_file)"
        return (get_default_registry_config)
    }

    let result = (do {
        open $config_file
    } | complete)

    if ($result.exit_code == 0) {
        $result.stdout
    } else {
        log warning "Failed to load registry config: file operation failed"
        get_default_registry_config
    }
}

# Get default registry configuration
def get_default_registry_config []
{
    {
        homebrew: {
            tap_repo: "your-org/homebrew-tap"
            formula_name: "provisioning"
            description: "Cloud-native infrastructure provisioning and management system"
            homepage: "https://github.com/your-org/provisioning"
            license: "MIT"
        }
        apt: {
            repository: "https://apt.your-org.com/ubuntu"
            distribution: "stable"
            component: "main"
            keyring: "/usr/share/keyrings/your-org-archive-keyring.gpg"
        }
        yum: {
            repository: "https://yum.your-org.com/centos"
            gpg_key: "https://yum.your-org.com/RPM-GPG-KEY-your-org"
        }
        docker: {
            registry: "docker.io"
            namespace: "your-org"
            image_name: "provisioning"
        }
        npm: {
            registry: "https://registry.npmjs.org"
            scope: "@your-org"
            package_name: "provisioning"
        }
        cargo: {
            registry: "https://crates.io"
            crate_name: "provisioning"
        }
    }
}

# Update specific registry
def update_registry [
    registry: string
    registry_config: record
    config_data: record
]
{
    log info $"Updating registry: ($registry)"

    let start_time = (date now)

    match $registry {
        "homebrew" => { update_homebrew $registry_config $config_data }
        "apt" => { update_apt_repository $registry_config $config_data }
        "yum" => { update_yum_repository $registry_config $config_data }
        "docker" => { update_docker_registry $registry_config $config_data }
        "npm" => { update_npm_registry $registry_config $config_data }
        "cargo" => { update_cargo_registry $registry_config $config_data }
        _ => {
            log warning $"Unknown registry: ($registry)"
            {
                registry: $registry
                status: "failed"
                reason: "unknown registry"
                duration: ((date now) - $start_time)
            }
        }
    }
}

# Update Homebrew formula
def update_homebrew [
    registry_config: record
    config_data: record
]
{
    log info "Updating Homebrew formula..."

    let start_time = (date now)
    let homebrew_config = ($config_data.homebrew)

    if $registry_config.dry_run {
        return {
            registry: "homebrew"
            status: "success"
            formula_name: $homebrew_config.formula_name
            version: $registry_config.version
            dry_run: true
            duration: ((date now) - $start_time)
        }
    }

    let result = (do {
        # Clone or update tap repository
        let tap_dir = $"/tmp/homebrew-tap-(random uuid)"
        let tap_url = $"https://github.com/($homebrew_config.tap_repo).git"

        if $registry_config.verbose {
            log info $"Cloning tap repository: ($tap_url)"
        }

        git clone $tap_url $tap_dir
        cd $tap_dir

        # Generate formula
        let formula_content = generate_homebrew_formula $registry_config $homebrew_config

        # Write formula file
        let formula_file = $"Formula/($homebrew_config.formula_name).rb"
        mkdir "Formula"
        $formula_content | save $formula_file

        # Commit and push if auto-commit is enabled
        if $registry_config.auto_commit {
            git add $formula_file
            git commit -m $"Update ($homebrew_config.formula_name) to v($registry_config.version)"
            git push origin main
        }

        # Cleanup
        cd /tmp
        rm -rf $tap_dir

        log info $"Successfully updated Homebrew formula: ($homebrew_config.formula_name)"

        {
            registry: "homebrew"
            status: "success"
            formula_name: $homebrew_config.formula_name
            version: $registry_config.version
            tap_repo: $homebrew_config.tap_repo
            auto_committed: $registry_config.auto_commit
            duration: ((date now) - $start_time)
        }

    } | complete)

    if ($result.exit_code != 0) {
        {
            registry: "homebrew"
            status: "failed"
            reason: "operation encountered an error"
            duration: ((date now) - $start_time)
        }
    } else {
        $result.stdout
    }
}

# Generate Homebrew formula content
def generate_homebrew_formula [
    registry_config: record
    homebrew_config: record
]
{
    # Generate download URLs and checksums for different platforms
    let platforms = ["linux", "macos"]
    let platform_blocks = []

    for platform in $platforms {
        let download_url = $"https://github.com/your-org/provisioning/releases/download/v($registry_config.version)/provisioning-($registry_config.version)-($platform)-complete.tar.gz"

        # In a real implementation, you would download and calculate actual SHA256
        let sha256 = "placeholder_sha256_hash_would_be_calculated_here"

        let platform_block = match $platform {
            "linux" => {
                $"  on_linux do
    url \"($download_url)\"
    sha256 \"($sha256)\"
  end"
            }
            "macos" => {
                $"  on_macos do
    url \"($download_url)\"
    sha256 \"($sha256)\"
  end"
            }
            _ => ""
        }

        $platform_blocks = ($platform_blocks | append $platform_block)
    }

    let formula = $"class ($homebrew_config.formula_name | str title-case) < Formula
  desc \"($homebrew_config.description)\"
  homepage \"($homebrew_config.homepage)\"
  license \"($homebrew_config.license)\"
  version \"($registry_config.version)\"

($platform_blocks | str join "\n\n")

  def install
    # Install binaries
    bin.install Dir[\"platform/*\"]

    # Install libraries
    libexec.install Dir[\"core/*\"]

    # Install configuration
    etc.install Dir[\"config/*\"] => \"provisioning\"

    # Create wrapper scripts
    (bin/\"provisioning\").write_env_script libexec/\"bin/provisioning\", PROVISIONING_HOME: libexec
  end

  test do
    system \"#{bin}/provisioning\", \"version\"
  end
end
"

    return $formula
}

# Update APT repository
def update_apt_repository [
    registry_config: record
    config_data: record
]
{
    log info "Updating APT repository..."

    let start_time = (date now)

    if $registry_config.dry_run {
        return {
            registry: "apt"
            status: "success"
            version: $registry_config.version
            dry_run: true
            duration: ((date now) - $start_time)
        }
    }

    # APT repository update would involve:
    # 1. Upload .deb packages to repository
    # 2. Update Packages index
    # 3. Sign repository with GPG key
    # 4. Update Release file

    log warning "APT repository update not fully implemented"

    {
        registry: "apt"
        status: "skipped"
        reason: "not fully implemented"
        duration: ((date now) - $start_time)
    }
}

# Update YUM repository
def update_yum_repository [
    registry_config: record
    config_data: record
]
{
    log info "Updating YUM repository..."

    let start_time = (date now)

    if $registry_config.dry_run {
        return {
            registry: "yum"
            status: "success"
            version: $registry_config.version
            dry_run: true
            duration: ((date now) - $start_time)
        }
    }

    # YUM repository update would involve:
    # 1. Upload .rpm packages to repository
    # 2. Run createrepo to update metadata
    # 3. Sign packages with GPG key

    log warning "YUM repository update not fully implemented"

    {
        registry: "yum"
        status: "skipped"
        reason: "not fully implemented"
        duration: ((date now) - $start_time)
    }
}

# Update Docker registry
def update_docker_registry [
    registry_config: record
    config_data: record
]
{
    log info "Updating Docker registry..."

    let start_time = (date now)
    let docker_config = ($config_data.docker)

    if $registry_config.dry_run {
        return {
            registry: "docker"
            status: "success"
            image: $"($docker_config.namespace)/($docker_config.image_name):($registry_config.version)"
            dry_run: true
            duration: ((date now) - $start_time)
        }
    }

    # Docker registry update would involve:
    # 1. Tag images with new version
    # 2. Push to registry
    # 3. Update image descriptions and README

    log warning "Docker registry update not fully implemented"

    {
        registry: "docker"
        status: "skipped"
        reason: "not fully implemented"
        image: $"($docker_config.namespace)/($docker_config.image_name):($registry_config.version)"
        duration: ((date now) - $start_time)
    }
}

# Update npm registry
def update_npm_registry [
    registry_config: record
    config_data: record
]
{
    log info "Updating npm registry..."

    let start_time = (date now)
    let npm_config = ($config_data.npm)

    if $registry_config.dry_run {
        return {
            registry: "npm"
            status: "success"
            package: $"($npm_config.scope)/($npm_config.package_name)"
            version: $registry_config.version
            dry_run: true
            duration: ((date now) - $start_time)
        }
    }

    # npm registry update would involve:
    # 1. Update package.json with new version
    # 2. Build package if needed
    # 3. Publish to npm registry

    log warning "npm registry update not fully implemented"

    {
        registry: "npm"
        status: "skipped"
        reason: "not fully implemented"
        package: $"($npm_config.scope)/($npm_config.package_name)"
        duration: ((date now) - $start_time)
    }
}

# Update Cargo registry
def update_cargo_registry [
    registry_config: record
    config_data: record
]
{
    log info "Updating Cargo registry..."

    let start_time = (date now)
    let cargo_config = ($config_data.cargo)

    if $registry_config.dry_run {
        return {
            registry: "cargo"
            status: "success"
            crate: $cargo_config.crate_name
            version: $registry_config.version
            dry_run: true
            duration: ((date now) - $start_time)
        }
    }

    # Cargo registry update would involve:
    # 1. Update Cargo.toml with new version
    # 2. Publish to crates.io

    log warning "Cargo registry update not fully implemented"

    {
        registry: "cargo"
        status: "skipped"
        reason: "not fully implemented"
        crate: $cargo_config.crate_name
        duration: ((date now) - $start_time)
    }
}

# Show registry status
def "main status" [] {
    let homebrew_result = (do { brew --version } | complete)
    let homebrew_available = ($homebrew_result.exit_code == 0)

    let docker_result = (do { docker --version } | complete)
    let docker_available = ($docker_result.exit_code == 0)

    let npm_result = (do { npm --version } | complete)
    let npm_available = ($npm_result.exit_code == 0)

    let cargo_result = (do { cargo --version } | complete)
    let cargo_available = ($cargo_result.exit_code == 0)

    let repo_root = ($env.PWD | path dirname | path dirname | path dirname)
    let current_version = (detect_current_version $repo_root)

    {
        current_version: $current_version
        available_tools: {
            homebrew: $homebrew_available
            docker: $docker_available
            npm: $npm_available
            cargo: $cargo_available
        }
        supported_registries: ["homebrew", "apt", "yum", "docker", "npm", "cargo"]
        implemented_registries: ["homebrew"]  # Only homebrew is fully implemented
    }
}

# Generate registry configuration template
def "main init-config" [output_file: string = "registry-config.toml"] {
    let config_template = $"# Registry Configuration for Package Distribution

[homebrew]
tap_repo = \"your-org/homebrew-tap\"
formula_name = \"provisioning\"
description = \"Cloud-native infrastructure provisioning and management system\"
homepage = \"https://github.com/your-org/provisioning\"
license = \"MIT\"

[apt]
repository = \"https://apt.your-org.com/ubuntu\"
distribution = \"stable\"
component = \"main\"
keyring = \"/usr/share/keyrings/your-org-archive-keyring.gpg\"

[yum]
repository = \"https://yum.your-org.com/centos\"
gpg_key = \"https://yum.your-org.com/RPM-GPG-KEY-your-org\"

[docker]
registry = \"docker.io\"
namespace = \"your-org\"
image_name = \"provisioning\"

[npm]
registry = \"https://registry.npmjs.org\"
scope = \"@your-org\"
package_name = \"provisioning\"

[cargo]
registry = \"https://crates.io\"
crate_name = \"provisioning\"
"

    $config_template | save $output_file
    log info $"Generated registry configuration template: ($output_file)"

    {
        config_file: $output_file
        registries_configured: 6
        template_generated: true
    }
}

# Validate registry configuration
def "main validate" [config_file: string = "registry-config.toml"] {
    let config_path = ($config_file | path expand)

    if not ($config_path | path exists) {
        return {
            status: "failed"
            reason: $"Configuration file not found: ($config_path)"
        }
    }

    let result = (do {
        let config = (open $config_path)
        let expected_sections = ["homebrew", "apt", "yum", "docker", "npm", "cargo"]
        let validation_results = []

        for section in $expected_sections {
            let section_exists = ($section in ($config | columns))
            let validation_results = ($validation_results | append {
                section: $section
                exists: $section_exists
                status: (if $section_exists { "valid" } else { "missing" })
            })
        }

        let valid_sections = ($validation_results | where status == "valid" | length)
        let total_sections = ($validation_results | length)

        {
            status: "success"
            config_file: $config_path
            valid_sections: $valid_sections
            total_sections: $total_sections
            validation_results: $validation_results
        }

    } | complete)

    if ($result.exit_code != 0) {
        {
            status: "failed"
            reason: "Failed to validate configuration: operation failed"
        }
    } else {
        $result.stdout
    }
}
