pub mod commands;

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

use crate::model::{
  enums::{ProjectSide, ProjectType, UpdateStrategy},
  fork::RefType,
};

#[derive(Parser)]
#[clap(name = "pakker")]
#[clap(about = "A multiplatform modpack manager for Minecraft", long_about = None)]
pub struct Cli {
  /// Enable verbose output (-v for info, -vv for debug, -vvv for trace)
  #[clap(short, long, action = clap::ArgAction::Count)]
  pub verbose: u8,

  #[clap(subcommand)]
  pub command: Commands,
}

#[derive(Subcommand)]
pub enum Commands {
  /// Initialize a new modpack project
  Init(InitArgs),

  /// Import an existing modpack
  Import(ImportArgs),

  /// Add projects to the modpack
  Add(AddArgs),

  /// Add projects with explicit platform specification (non-interactive)
  #[clap(name = "add-prj", alias = "prj")]
  AddPrj(AddPrjArgs),

  /// Remove projects from the modpack
  Rm(RmArgs),

  /// Update projects
  Update(UpdateArgs),

  /// List projects in the modpack
  Ls(LsArgs),

  /// Set project properties
  Set(SetArgs),

  /// Link projects together
  Link(LinkArgs),

  /// Unlink projects
  Unlink(UnlinkArgs),

  /// Show differences between local and remote
  Diff(DiffArgs),

  /// Fetch project files
  Fetch(FetchArgs),

  /// Sync projects (fetch + update)
  Sync(SyncArgs),

  /// Export modpack
  Export(ExportArgs),

  /// Manage remote repositories
  Remote(RemoteArgs),

  /// Update modpack from remote Git repository
  RemoteUpdate(RemoteUpdateArgs),

  /// Check for available updates
  Status(StatusArgs),

  /// Inspect project details
  Inspect(InspectArgs),

  /// Manage API credentials
  Credentials(CredentialsArgs),

  /// Configure modpack properties
  Cfg(CfgArgs),

  /// Manage fork configuration
  Fork(ForkArgs),
}

#[derive(Args)]
pub struct InitArgs {
  /// Modpack name
  #[clap(short, long)]
  pub name: Option<String>,

  /// Modpack version
  #[clap(short = 'V', long)]
  pub version: Option<String>,

  /// Target platform
  #[clap(short, long)]
  pub target: Option<String>,

  /// Minecraft versions (space-separated)
  #[clap(short, long = "mc-versions", value_delimiter = ' ', num_args = 1..)]
  pub mc_versions: Option<Vec<String>>,

  /// Mod loaders (format: name=version, can be specified multiple times)
  #[clap(short, long = "loaders", value_delimiter = ',')]
  pub loaders: Option<Vec<String>>,

  /// Skip interactive prompts (use defaults)
  #[clap(short, long)]
  pub yes: bool,
}

#[derive(Args)]
pub struct ImportArgs {
  /// Path to modpack file
  pub file: String,

  /// Resolve dependencies
  #[clap(short = 'D', long = "deps")]
  pub deps: bool,

  /// Skip confirmation prompts
  #[clap(short, long)]
  pub yes: bool,
}

#[derive(Args)]
pub struct AddArgs {
  /// Project identifiers to add
  #[clap(required = true)]
  pub inputs: Vec<String>,

  /// Project type (mod, resourcepack, shader, datapack, world)
  #[clap(short = 't', long = "type")]
  pub project_type: Option<ProjectType>,

  /// Skip resolving dependencies
  #[clap(short = 'D', long)]
  pub no_deps: bool,

  /// Update if already exists
  #[clap(short, long)]
  pub update: bool,

  /// Skip confirmation prompts
  #[clap(short, long)]
  pub yes: bool,
}

#[derive(Args)]
pub struct AddPrjArgs {
  /// `CurseForge` project slug or ID (optional file ID: `slug#file_id`)
  #[clap(long = "cf", alias = "curseforge")]
  pub curseforge: Option<String>,

  /// Modrinth project slug or ID (optional file ID: `slug#file_id`)
  #[clap(long = "mr", alias = "modrinth")]
  pub modrinth: Option<String>,

  /// GitHub repository (format: owner/repo or owner/repo#tag)
  #[clap(long = "gh", alias = "github")]
  pub github: Option<String>,

  /// Project type (mod, resourcepack, shader, datapack, world)
  #[clap(short = 't', long = "type")]
  pub project_type: Option<ProjectType>,

  /// Project side (client, server, both)
  #[clap(long)]
  pub side: Option<ProjectSide>,

  /// Update strategy (latest, none)
  #[clap(long)]
  pub strategy: Option<UpdateStrategy>,

  /// Redistributable flag
  #[clap(long)]
  pub redistributable: Option<bool>,

  /// Subpath for project file placement
  #[clap(long)]
  pub subpath: Option<String>,

  /// Project aliases (can be specified multiple times)
  #[clap(long = "alias")]
  pub aliases: Vec<String>,

  /// Export flag (whether to include in exports)
  #[clap(long)]
  pub export: Option<bool>,

  /// Skip resolving dependencies
  #[clap(short = 'D', long = "no-deps")]
  pub no_deps: bool,

  /// Skip confirmation prompts
  #[clap(short, long)]
  pub yes: bool,
}

#[derive(Args)]
pub struct RmArgs {
  /// Project identifiers to remove
  #[clap(required = true)]
  pub inputs: Vec<String>,

  /// Remove all projects
  #[clap(short = 'a', long)]
  pub all: bool,

  /// Skip confirmation prompt
  #[clap(short, long)]
  pub yes: bool,

  /// Skip removing dependent projects
  #[clap(short = 'D', long = "no-deps")]
  pub no_deps: bool,
}

#[derive(Args)]
pub struct UpdateArgs {
  /// Projects to update (empty = all)
  #[arg(value_name = "PROJECT")]
  pub inputs: Vec<String>,

  /// Update all projects
  #[arg(short, long)]
  pub all: bool,

  /// Skip confirmation prompts
  #[arg(short, long)]
  pub yes: bool,
}

#[derive(Args)]
pub struct LsArgs {
  /// Show detailed information
  #[clap(short, long)]
  pub detailed: bool,

  /// Add update information for projects
  #[clap(short = 'c', long = "check-updates")]
  pub check_updates: bool,

  /// Maximum length for project names
  #[clap(long = "name-max-length")]
  pub name_max_length: Option<usize>,
}

#[derive(Args)]
pub struct SetArgs {
  /// Project identifier (optional for lockfile properties)
  pub input: Option<String>,

  /// Project type
  #[clap(long)]
  pub r#type: Option<String>,

  /// Project side (client/server/both)
  #[clap(long)]
  pub side: Option<String>,

  /// Update strategy (latest/none)
  #[clap(long)]
  pub strategy: Option<String>,

  /// Redistributable flag
  #[clap(long)]
  pub redistributable: Option<bool>,

  /// Change the target of the pack (curseforge, modrinth, multiplatform)
  #[clap(short = 't', long)]
  pub target: Option<String>,

  /// Change the minecraft versions (comma-separated)
  #[clap(short = 'v', long)]
  pub mc_versions: Option<String>,

  /// Change the mod loaders (format: name=version,name=version)
  #[clap(short = 'l', long)]
  pub loaders: Option<String>,
}

#[derive(Args)]
pub struct LinkArgs {
  /// Source project
  pub from: String,

  /// Target project
  pub to: String,
}

#[derive(Args)]
pub struct UnlinkArgs {
  /// Source project
  pub from: String,

  /// Target project
  pub to: String,
}

#[derive(Args)]
pub struct DiffArgs {
  /// Path to old lockfile
  pub old_lockfile: String,

  /// Path to current lockfile (optional, defaults to pakku-lock.json)
  pub current_lockfile: Option<String>,

  /// Export markdown diff
  #[clap(long)]
  pub markdown_diff: Option<String>,

  /// Export markdown (formatted)
  #[clap(long)]
  pub markdown: Option<String>,

  /// Verbose output (show file changes)
  #[clap(short, long)]
  pub verbose: bool,

  /// Header size for markdown (0-5)
  #[clap(short = 'H', long, default_value = "2")]
  pub header_size: usize,
}

#[derive(Args)]
pub struct FetchArgs {
  /// Timeout for waiting on conflicting operations (seconds)
  #[clap(short, long)]
  pub timeout: Option<u64>,

  /// Number of retry attempts for failed downloads
  #[clap(short = 'r', long, default_value = "2")]
  pub retry: u32,

  /// Move unknown files to shelf instead of deleting
  #[clap(long)]
  pub shelve: bool,
}

#[derive(Args)]
pub struct SyncArgs {
  /// Sync additions only
  #[clap(short = 'A', long)]
  pub additions: bool,

  /// Sync removals only
  #[clap(short = 'R', long)]
  pub removals: bool,

  /// Sync updates only (apply pending updates)
  #[clap(short = 'U', long)]
  pub updates: bool,
}

#[derive(Args)]
pub struct ExportArgs {
  /// Export profile (curseforge, modrinth, serverpack)
  /// If not specified, all profiles will be exported
  #[clap(short, long)]
  pub profile: Option<String>,

  /// Output directory
  #[clap(short, long)]
  pub output: Option<String>,

  /// Use Pakker-compatible output layout (build/<profile>/...)
  /// Default is Pakker layout (exports/...)
  #[clap(long)]
  pub pakker_layout: bool,

  /// Show file IO errors during export
  #[clap(long = "show-io-errors")]
  pub show_io_errors: bool,

  /// Export modpack without server content
  /// Modrinth: exclude server-overrides and SERVER mods
  /// `ServerPack`: skip export
  #[clap(long = "no-server")]
  pub no_server: bool,
}

#[derive(Args)]
pub struct RemoteArgs {
  /// Git URL to install from (if empty, shows status)
  pub url: Option<String>,

  /// Branch to checkout (instead of remote's HEAD)
  #[clap(short, long)]
  pub branch: Option<String>,

  /// Install server pack
  #[clap(short = 'S', long)]
  pub server_pack: bool,

  /// Retry count for downloads
  #[clap(short, long, default_value = "2")]
  pub retry: u32,

  /// Remove remote from modpack
  #[clap(long = "rm", long = "remove")]
  pub remove: bool,
}

#[derive(Args)]
pub struct RemoteUpdateArgs {
  /// Branch to checkout instead of remote's HEAD
  #[clap(short, long)]
  pub branch: Option<String>,

  /// Install server pack instead of full modpack
  #[clap(short, long)]
  pub server_pack: bool,
}

#[derive(Args)]
pub struct StatusArgs {
  /// Check updates in parallel
  #[clap(short, long)]
  pub parallel: bool,
}

#[derive(Args)]
pub struct InspectArgs {
  /// Project identifiers to inspect
  #[clap(required = true)]
  pub projects: Vec<String>,
}

#[derive(Args)]
pub struct CredentialsArgs {
  /// Delete stored credentials (defaults to deleting both file and keyring)
  #[clap(short, long)]
  pub delete: bool,

  /// Delete credentials file (~/.pakku/credentials)
  #[clap(long)]
  pub delete_file: bool,

  /// Delete credentials from keyring (service: pakker)
  #[clap(long)]
  pub delete_keyring: bool,

  #[clap(subcommand)]
  pub subcommand: Option<CredentialsSubcommand>,
}

#[derive(Subcommand)]
pub enum CredentialsSubcommand {
  /// Set API credentials
  Set(CredentialsSetArgs),
}

#[derive(Args)]
pub struct CredentialsSetArgs {
  /// `CurseForge` API key
  #[clap(long)]
  pub cf_api_key: Option<String>,

  /// Modrinth API token
  #[clap(long)]
  pub modrinth_token: Option<String>,

  /// GitHub access token
  #[clap(long)]
  pub gh_access_token: Option<String>,
}

#[derive(Args)]
pub struct CfgArgs {
  /// Modpack name
  #[clap(long)]
  pub name: Option<String>,

  /// Modpack version
  #[clap(long)]
  pub version: Option<String>,

  /// Modpack description
  #[clap(long)]
  pub description: Option<String>,

  /// Modpack author
  #[clap(long)]
  pub author: Option<String>,

  /// Path for mods
  #[clap(long)]
  pub mods_path: Option<String>,

  /// Path for resource packs
  #[clap(long)]
  pub resource_packs_path: Option<String>,

  /// Path for data packs
  #[clap(long)]
  pub data_packs_path: Option<String>,

  /// Path for worlds
  #[clap(long)]
  pub worlds_path: Option<String>,

  /// Path for shaders
  #[clap(long)]
  pub shaders_path: Option<String>,

  #[clap(subcommand)]
  pub subcommand: Option<CfgSubcommand>,
}

#[derive(Subcommand)]
pub enum CfgSubcommand {
  /// Configure per-project settings
  Prj(CfgPrjArgs),
}

#[derive(Args)]
pub struct CfgPrjArgs {
  /// Project identifier
  pub project: String,

  /// Project type
  #[clap(long)]
  pub r#type: Option<String>,

  /// Project side (client/server/both)
  #[clap(long)]
  pub side: Option<String>,

  /// Update strategy (latest/none)
  #[clap(long)]
  pub update_strategy: Option<String>,

  /// Redistributable flag
  #[clap(long)]
  pub redistributable: Option<bool>,

  /// Subpath for project
  #[clap(long)]
  pub subpath: Option<String>,

  /// Add alias
  #[clap(long)]
  pub add_alias: Option<String>,

  /// Remove alias
  #[clap(long)]
  pub remove_alias: Option<String>,

  /// Export flag
  #[clap(long)]
  pub export: Option<bool>,
}

/// Fork subcommand arguments
#[derive(Debug, Args)]
#[command(args_conflicts_with_subcommands = true)]
pub struct ForkArgs {
  #[clap(subcommand)]
  pub subcommand: ForkSubcommand,
}

#[derive(Debug, Subcommand)]
pub enum ForkSubcommand {
  /// Initialize fork from parent repository
  Init {
    /// Git URL of parent repository
    #[clap(long, conflicts_with = "from_path")]
    git_url: Option<String>,

    /// Use current repository as parent
    #[clap(long, conflicts_with = "from_path")]
    from_current: bool,

    /// Use an already-cloned repository as parent (path to worktree or .git)
    #[clap(long, value_parser, conflicts_with_all = &["git_url", "from_current"])]
    from_path: Option<String>,

    /// Branch/tag/commit to track
    #[clap(long)]
    ref_name: Option<String>,

    /// Type of ref (branch/tag/commit)
    #[clap(long, value_enum)]
    ref_type: Option<RefType>,

    /// Remote name
    #[clap(long, default_value = "origin")]
    remote: Option<String>,
  },

  /// Update fork configuration
  Set {
    /// New git URL (optional)
    #[clap(long)]
    git_url: Option<String>,

    /// Branch/tag/commit to track
    #[clap(long)]
    ref_name: String,

    /// Type of ref (branch/tag/commit)
    #[clap(long, value_enum)]
    ref_type: Option<RefType>,

    /// Remote name
    #[clap(long)]
    remote: Option<String>,
  },

  /// Show fork configuration
  Show,

  /// Remove fork configuration
  Unset,

  /// Sync with parent repository
  Sync,

  /// Promote projects to parent (legacy)
  Promote {
    /// Project identifiers to promote
    projects: Vec<String>,
  },
}