/******************************************************************************
               __               ____                __
              / /   ___  ____ _/ __/_____________ _/ /__
             / /   / _ \/ __ `/ /_/ ___/ ___/ __ `/ / _ \
            / /___/  __/ /_/ / __(__  ) /__/ /_/ / /  __/
           /_____/\___/\__,_/_/ /____/\___/\__,_/_/\___/

   (C)opyright 2025, Leafscale, LLC -  https://www.leafscale.com

   Project: Zygaena
  Filename: config.reef
   Authors: Chris Tusa <chris.tusa@leafscale.com>
   License: <see LICENSE file included with this source code>
Description: Configuration file loading and access

******************************************************************************/

module core.config

import types
import io.file
import core.str
import encoding.toml

export
    // Configuration structure
    type Config

    // Load configuration from file (with defaults if not found)
    fn load(): Config

    // Access functions for common settings
    fn get_arch(cfg: Config): string
    fn get_jobs(cfg: Config): int
    fn get_confirm(cfg: Config): bool
    fn get_color(cfg: Config): bool

    // Path accessors
    fn get_ports_dir(cfg: Config): string
    fn get_packages_dir(cfg: Config): string
    fn get_sources_dir(cfg: Config): string
    fn get_database_dir(cfg: Config): string
    fn get_build_dir(cfg: Config): string
    fn get_index_dir(cfg: Config): string
    // Legacy (for compatibility)
    fn get_work_dir(cfg: Config): string
    fn get_pkg_dir(cfg: Config): string

    // Root and prefix accessors
    fn get_root(cfg: Config): string
    fn get_prefix(cfg: Config): string
    fn get_sysconfdir(cfg: Config): string

    // Root-aware path accessors (prepend root to path)
    fn get_database_dir_rooted(cfg: Config): string
    fn get_install_prefix(cfg: Config): string

    // Apply command-line overrides to config
    fn apply_overrides(cfg: Config, root: string, prefix: string, no_chroot: bool): Config

    // Build settings
    fn get_cflags(cfg: Config): string
    fn get_cxxflags(cfg: Config): string
    fn get_makeflags(cfg: Config): string
    fn get_strip(cfg: Config): bool
    fn get_fallback_to_source(cfg: Config): bool
    fn get_compress_man(cfg: Config): bool
    fn get_clean_work(cfg: Config): bool
    fn get_clean_pkg(cfg: Config): bool
    fn get_logging(cfg: Config): bool
    fn get_quiet(cfg: Config): bool

    // Network settings
    fn get_timeout(cfg: Config): int
    fn get_retries(cfg: Config): int
    fn get_use_proxy(cfg: Config): bool

    // Sync settings
    fn get_auto_refresh(cfg: Config): bool

    // Cache settings
    fn get_keep_packages(cfg: Config): bool
    fn get_keep_sources(cfg: Config): bool

    // Security settings
    fn get_require_signed_repos(cfg: Config): bool
    fn get_require_signed_packages(cfg: Config): bool

    // Install settings
    fn get_chroot_scripts(cfg: Config): bool
end export

// Configuration structure
type Config = struct
    // [general]
    arch: string
    jobs: int
    confirm: bool
    color: bool

    // [paths]
    root: string
    prefix: string
    sysconfdir: string
    ports_dir: string
    packages_dir: string
    sources_dir: string
    database_dir: string
    build_dir: string
    index_dir: string
    // Legacy (kept for compatibility)
    work_dir: string
    pkg_dir: string

    // [build]
    cflags: string
    cxxflags: string
    makeflags: string
    strip: bool
    compress_man: bool
    fallback_to_source: bool
    clean_work: bool
    clean_pkg: bool
    logging: bool
    quiet: bool

    // [network]
    timeout: int
    retries: int
    use_proxy: bool

    // [sync]
    auto_refresh: bool

    // [cache]
    keep_packages: bool
    keep_sources: bool

    // [security]
    require_signed_repos: bool
    require_signed_packages: bool

    // [install]
    chroot_scripts: bool
end Config

// Create a default configuration
fn default_config(): Config
    return Config{
        // General
        arch: "amd64",
        jobs: 0,  // 0 = auto-detect
        confirm: true,
        color: true,

        // Paths (defaults from types)
        root: "",
        prefix: "/usr/local",
        sysconfdir: "/etc",
        ports_dir: types.get_ports_dir(),
        packages_dir: types.get_packages_dir(),
        sources_dir: types.get_sources_dir(),
        database_dir: types.get_db_dir(),
        build_dir: types.get_build_dir(),
        index_dir: types.get_index_dir(),
        // Legacy (for compatibility)
        work_dir: types.get_build_dir(),
        pkg_dir: types.get_build_dir(),

        // Build
        cflags: "-O2 -pipe",
        cxxflags: "-O2 -pipe",
        makeflags: "",
        strip: true,
        compress_man: true,
        fallback_to_source: true,
        clean_work: true,
        clean_pkg: true,
        logging: true,
        quiet: false,

        // Network
        timeout: 30,
        retries: 3,
        use_proxy: false,

        // Sync
        auto_refresh: false,

        // Cache
        keep_packages: true,
        keep_sources: true,

        // Security
        require_signed_repos: false,
        require_signed_packages: false,

        // Install
        chroot_scripts: true
    }
end default_config

// Load configuration from file
fn load(): Config
    mut cfg = default_config()

    // Check if config file exists
    if not file.fileExists(types.get_config_file())
        return cfg
    end if

    // Read config file
    let content = file.readFile(types.get_config_file())
    if str.length(content) == 0
        return cfg
    end if

    // Parse TOML
    let keys = toml.toml_alloc_keys()
    let vals = toml.toml_alloc_values()
    let entry_count = toml.toml_parse(content, keys, vals)

    if entry_count == 0
        return cfg
    end if

    // [general] section
    if toml.toml_has_key(keys, vals, entry_count, "general.arch")
        cfg.arch = toml.toml_get(keys, vals, entry_count, "general.arch")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "general.jobs")
        cfg.jobs = toml.toml_get_int(keys, vals, entry_count, "general.jobs")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "general.confirm")
        cfg.confirm = toml.toml_get_bool(keys, vals, entry_count, "general.confirm")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "general.color")
        cfg.color = toml.toml_get_bool(keys, vals, entry_count, "general.color")
    end if

    // [paths] section
    if toml.toml_has_key(keys, vals, entry_count, "paths.root")
        cfg.root = toml.toml_get(keys, vals, entry_count, "paths.root")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "paths.prefix")
        cfg.prefix = toml.toml_get(keys, vals, entry_count, "paths.prefix")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "paths.sysconfdir")
        cfg.sysconfdir = toml.toml_get(keys, vals, entry_count, "paths.sysconfdir")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "paths.ports")
        cfg.ports_dir = toml.toml_get(keys, vals, entry_count, "paths.ports")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "paths.packages")
        cfg.packages_dir = toml.toml_get(keys, vals, entry_count, "paths.packages")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "paths.sources")
        cfg.sources_dir = toml.toml_get(keys, vals, entry_count, "paths.sources")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "paths.database")
        cfg.database_dir = toml.toml_get(keys, vals, entry_count, "paths.database")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "paths.build")
        cfg.build_dir = toml.toml_get(keys, vals, entry_count, "paths.build")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "paths.index")
        cfg.index_dir = toml.toml_get(keys, vals, entry_count, "paths.index")
    end if
    // Legacy path support (maps to build_dir)
    if toml.toml_has_key(keys, vals, entry_count, "paths.work")
        cfg.work_dir = toml.toml_get(keys, vals, entry_count, "paths.work")
        cfg.build_dir = cfg.work_dir  // Also set new field
    end if
    if toml.toml_has_key(keys, vals, entry_count, "paths.pkg")
        cfg.pkg_dir = toml.toml_get(keys, vals, entry_count, "paths.pkg")
    end if

    // [build] section
    if toml.toml_has_key(keys, vals, entry_count, "build.cflags")
        cfg.cflags = toml.toml_get(keys, vals, entry_count, "build.cflags")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "build.cxxflags")
        cfg.cxxflags = toml.toml_get(keys, vals, entry_count, "build.cxxflags")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "build.makeflags")
        cfg.makeflags = toml.toml_get(keys, vals, entry_count, "build.makeflags")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "build.strip")
        cfg.strip = toml.toml_get_bool(keys, vals, entry_count, "build.strip")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "build.compress_man")
        cfg.compress_man = toml.toml_get_bool(keys, vals, entry_count, "build.compress_man")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "build.fallback_to_source")
        cfg.fallback_to_source = toml.toml_get_bool(keys, vals, entry_count, "build.fallback_to_source")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "build.clean_work")
        cfg.clean_work = toml.toml_get_bool(keys, vals, entry_count, "build.clean_work")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "build.clean_pkg")
        cfg.clean_pkg = toml.toml_get_bool(keys, vals, entry_count, "build.clean_pkg")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "build.logging")
        cfg.logging = toml.toml_get_bool(keys, vals, entry_count, "build.logging")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "build.quiet")
        cfg.quiet = toml.toml_get_bool(keys, vals, entry_count, "build.quiet")
    end if

    // [network] section
    if toml.toml_has_key(keys, vals, entry_count, "network.timeout")
        cfg.timeout = toml.toml_get_int(keys, vals, entry_count, "network.timeout")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "network.retries")
        cfg.retries = toml.toml_get_int(keys, vals, entry_count, "network.retries")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "network.use_proxy")
        cfg.use_proxy = toml.toml_get_bool(keys, vals, entry_count, "network.use_proxy")
    end if

    // [sync] section
    if toml.toml_has_key(keys, vals, entry_count, "sync.auto_refresh")
        cfg.auto_refresh = toml.toml_get_bool(keys, vals, entry_count, "sync.auto_refresh")
    end if

    // [cache] section
    if toml.toml_has_key(keys, vals, entry_count, "cache.keep_packages")
        cfg.keep_packages = toml.toml_get_bool(keys, vals, entry_count, "cache.keep_packages")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "cache.keep_sources")
        cfg.keep_sources = toml.toml_get_bool(keys, vals, entry_count, "cache.keep_sources")
    end if

    // [security] section
    if toml.toml_has_key(keys, vals, entry_count, "security.require_signed_repos")
        cfg.require_signed_repos = toml.toml_get_bool(keys, vals, entry_count, "security.require_signed_repos")
    end if
    if toml.toml_has_key(keys, vals, entry_count, "security.require_signed_packages")
        cfg.require_signed_packages = toml.toml_get_bool(keys, vals, entry_count, "security.require_signed_packages")
    end if

    // [install] section
    if toml.toml_has_key(keys, vals, entry_count, "install.chroot_scripts")
        cfg.chroot_scripts = toml.toml_get_bool(keys, vals, entry_count, "install.chroot_scripts")
    end if

    return cfg
end load

// Accessor functions
fn get_arch(cfg: Config): string
    return cfg.arch
end get_arch

fn get_jobs(cfg: Config): int
    return cfg.jobs
end get_jobs

fn get_confirm(cfg: Config): bool
    return cfg.confirm
end get_confirm

fn get_color(cfg: Config): bool
    return cfg.color
end get_color

fn get_ports_dir(cfg: Config): string
    return cfg.ports_dir
end get_ports_dir

fn get_packages_dir(cfg: Config): string
    return cfg.packages_dir
end get_packages_dir

fn get_sources_dir(cfg: Config): string
    return cfg.sources_dir
end get_sources_dir

fn get_database_dir(cfg: Config): string
    return cfg.database_dir
end get_database_dir

fn get_build_dir(cfg: Config): string
    return cfg.build_dir
end get_build_dir

fn get_index_dir(cfg: Config): string
    return cfg.index_dir
end get_index_dir

// Legacy accessors (for compatibility)
fn get_work_dir(cfg: Config): string
    return cfg.build_dir
end get_work_dir

fn get_pkg_dir(cfg: Config): string
    return cfg.build_dir
end get_pkg_dir

fn get_cflags(cfg: Config): string
    return cfg.cflags
end get_cflags

fn get_cxxflags(cfg: Config): string
    return cfg.cxxflags
end get_cxxflags

fn get_makeflags(cfg: Config): string
    return cfg.makeflags
end get_makeflags

fn get_strip(cfg: Config): bool
    return cfg.strip
end get_strip

fn get_fallback_to_source(cfg: Config): bool
    return cfg.fallback_to_source
end get_fallback_to_source

fn get_compress_man(cfg: Config): bool
    return cfg.compress_man
end get_compress_man

fn get_clean_work(cfg: Config): bool
    return cfg.clean_work
end get_clean_work

fn get_clean_pkg(cfg: Config): bool
    return cfg.clean_pkg
end get_clean_pkg

fn get_logging(cfg: Config): bool
    return cfg.logging
end get_logging

fn get_quiet(cfg: Config): bool
    return cfg.quiet
end get_quiet

fn get_timeout(cfg: Config): int
    return cfg.timeout
end get_timeout

fn get_retries(cfg: Config): int
    return cfg.retries
end get_retries

fn get_use_proxy(cfg: Config): bool
    return cfg.use_proxy
end get_use_proxy

fn get_auto_refresh(cfg: Config): bool
    return cfg.auto_refresh
end get_auto_refresh

fn get_keep_packages(cfg: Config): bool
    return cfg.keep_packages
end get_keep_packages

fn get_keep_sources(cfg: Config): bool
    return cfg.keep_sources
end get_keep_sources

fn get_require_signed_repos(cfg: Config): bool
    return cfg.require_signed_repos
end get_require_signed_repos

fn get_require_signed_packages(cfg: Config): bool
    return cfg.require_signed_packages
end get_require_signed_packages

fn get_chroot_scripts(cfg: Config): bool
    return cfg.chroot_scripts
end get_chroot_scripts

// Get the alternate root path (empty string means /)
fn get_root(cfg: Config): string
    return cfg.root
end get_root

// Get the installation prefix (default /usr/local)
fn get_prefix(cfg: Config): string
    return cfg.prefix
end get_prefix

// Get the system configuration directory (default /etc)
fn get_sysconfdir(cfg: Config): string
    return cfg.sysconfdir
end get_sysconfdir

// Get database directory with root prepended
fn get_database_dir_rooted(cfg: Config): string
    if str.length(cfg.root) == 0
        return cfg.database_dir
    end if
    return cfg.root + cfg.database_dir
end get_database_dir_rooted

// Get the full install prefix (root + prefix)
// This is where package files should be installed
fn get_install_prefix(cfg: Config): string
    if str.length(cfg.root) == 0
        return cfg.prefix
    end if
    return cfg.root + cfg.prefix
end get_install_prefix

// Apply command-line overrides to config
// Call this after loading config to override with --root and --prefix flags
fn apply_overrides(cfg: Config, root: string, prefix: string, no_chroot: bool): Config
    mut result = cfg
    if str.length(root) > 0
        result.root = root
    end if
    if str.length(prefix) > 0
        result.prefix = prefix
    end if
    if no_chroot
        result.chroot_scripts = false
    end if
    return result
end apply_overrides

end module