/**
 * RubyGems Registry Type Definitions
 * Compliant with Compact Index API and RubyGems protocol
 */

/**
 * Gem version entry in compact index
 */
export interface IRubyGemsVersion {
  /** Version number */
  version: string;
  /** Platform (e.g., ruby, x86_64-linux) */
  platform?: string;
  /** Dependencies */
  dependencies?: IRubyGemsDependency[];
  /** Requirements */
  requirements?: IRubyGemsRequirement[];
  /** Whether this version is yanked */
  yanked?: boolean;
  /** SHA256 checksum of .gem file */
  checksum?: string;
}

/**
 * Gem dependency specification
 */
export interface IRubyGemsDependency {
  /** Gem name */
  name: string;
  /** Version requirement (e.g., ">= 1.0", "~> 2.0") */
  requirement: string;
}

/**
 * Gem requirements (ruby version, rubygems version, etc.)
 */
export interface IRubyGemsRequirement {
  /** Requirement type (ruby, rubygems) */
  type: 'ruby' | 'rubygems';
  /** Version requirement */
  requirement: string;
}

/**
 * Complete gem metadata
 */
export interface IRubyGemsMetadata {
  /** Gem name */
  name: string;
  /** All versions */
  versions: Record<string, IRubyGemsVersionMetadata>;
  /** Last modified timestamp */
  'last-modified'?: string;
}

/**
 * Version-specific metadata
 */
export interface IRubyGemsVersionMetadata {
  /** Version number */
  version: string;
  /** Platform */
  platform?: string;
  /** Authors */
  authors?: string[];
  /** Description */
  description?: string;
  /** Summary */
  summary?: string;
  /** Homepage */
  homepage?: string;
  /** License */
  license?: string;
  /** Dependencies */
  dependencies?: IRubyGemsDependency[];
  /** Requirements */
  requirements?: IRubyGemsRequirement[];
  /** SHA256 checksum */
  checksum: string;
  /** File size */
  size: number;
  /** Upload timestamp */
  'upload-time': string;
  /** Uploader */
  'uploaded-by': string;
  /** Yanked status */
  yanked?: boolean;
  /** Yank reason */
  'yank-reason'?: string;
}

/**
 * Compact index versions file entry
 * Format: GEMNAME [-]VERSION_PLATFORM[,VERSION_PLATFORM,...] MD5
 */
export interface ICompactIndexVersionsEntry {
  /** Gem name */
  name: string;
  /** Versions (with optional platform and yank flag) */
  versions: Array<{
    version: string;
    platform?: string;
    yanked: boolean;
  }>;
  /** MD5 checksum of info file */
  infoChecksum: string;
}

/**
 * Compact index info file entry
 * Format: VERSION[-PLATFORM] [DEP[,DEP,...]]|REQ[,REQ,...]
 */
export interface ICompactIndexInfoEntry {
  /** Version number */
  version: string;
  /** Platform (optional) */
  platform?: string;
  /** Dependencies */
  dependencies: IRubyGemsDependency[];
  /** Requirements */
  requirements: IRubyGemsRequirement[];
  /** SHA256 checksum */
  checksum: string;
}

/**
 * Gem upload request
 */
export interface IRubyGemsUploadRequest {
  /** Gem file data */
  gemData: Buffer;
  /** Gem filename */
  filename: string;
}

/**
 * Gem upload response
 */
export interface IRubyGemsUploadResponse {
  /** Success message */
  message?: string;
  /** Gem name */
  name?: string;
  /** Version */
  version?: string;
}

/**
 * Yank request
 */
export interface IRubyGemsYankRequest {
  /** Gem name */
  gem_name: string;
  /** Version to yank */
  version: string;
  /** Platform (optional) */
  platform?: string;
}

/**
 * Yank response
 */
export interface IRubyGemsYankResponse {
  /** Success indicator */
  success: boolean;
  /** Message */
  message?: string;
}

/**
 * Version info response (JSON)
 */
export interface IRubyGemsVersionInfo {
  /** Gem name */
  name: string;
  /** Versions list */
  versions: Array<{
    /** Version number */
    number: string;
    /** Platform */
    platform?: string;
    /** Build date */
    built_at?: string;
    /** Download count */
    downloads_count?: number;
  }>;
}

/**
 * Dependencies query response
 */
export interface IRubyGemsDependenciesResponse {
  /** Dependencies for requested gems */
  dependencies: Array<{
    /** Gem name */
    name: string;
    /** Version */
    number: string;
    /** Platform */
    platform?: string;
    /** Dependencies */
    dependencies: Array<{
      name: string;
      requirements: string;
    }>;
  }>;
}

/**
 * Error response structure
 */
export interface IRubyGemsError {
  /** Error message */
  error: string;
  /** HTTP status code */
  status?: number;
}

/**
 * Gem specification (extracted from .gem file)
 */
export interface IRubyGemsSpec {
  /** Gem name */
  name: string;
  /** Version */
  version: string;
  /** Platform */
  platform?: string;
  /** Authors */
  authors?: string[];
  /** Email */
  email?: string;
  /** Homepage */
  homepage?: string;
  /** Summary */
  summary?: string;
  /** Description */
  description?: string;
  /** License */
  license?: string;
  /** Dependencies */
  dependencies?: IRubyGemsDependency[];
  /** Required Ruby version */
  required_ruby_version?: string;
  /** Required RubyGems version */
  required_rubygems_version?: string;
  /** Files */
  files?: string[];
  /** Requirements */
  requirements?: string[];
}