/**
 * Location implementation classes for Mail Manager services
 */

import type {
  ServiceLocation,
  ServiceLocationUri,
  ServiceLocationSocketSole,
  ServiceLocationSocketSplit,
  ServiceLocationFile
} from '@/types/service';

/**
 * Base Location class
 */
export abstract class Location {
  abstract toJson(): ServiceLocation;
  
  static fromJson(data: ServiceLocation): Location {
    switch (data.type) {
      case 'URI':
        return LocationUri.fromJson(data);
      case 'SOCKET_SOLE':
        return LocationSocketSole.fromJson(data);
      case 'SOCKET_SPLIT':
        return LocationSocketSplit.fromJson(data);
      case 'FILE':
        return LocationFile.fromJson(data);
      default:
        throw new Error(`Unknown location type: ${(data as any).type}`);
    }
  }
}

/**
 * URI-based service location for API and web services
 * Used by: JMAP, Gmail API, etc.
 */
export class LocationUri extends Location {
  readonly type = 'URI' as const;
  scheme: string;
  host: string;
  port: number;
  path?: string;
  verifyPeer: boolean;
  verifyHost: boolean;

  constructor(
    scheme: string = 'https',
    host: string = '',
    port: number = 443,
    path?: string,
    verifyPeer: boolean = true,
    verifyHost: boolean = true
  ) {
    super();
    this.scheme = scheme;
    this.host = host;
    this.port = port;
    this.path = path;
    this.verifyPeer = verifyPeer;
    this.verifyHost = verifyHost;
  }

  static fromJson(data: ServiceLocationUri): LocationUri {
    return new LocationUri(
      data.scheme,
      data.host,
      data.port,
      data.path,
      data.verifyPeer ?? true,
      data.verifyHost ?? true
    );
  }

  toJson(): ServiceLocationUri {
    return {
      type: this.type,
      scheme: this.scheme,
      host: this.host,
      port: this.port,
      ...(this.path && { path: this.path }),
      ...(this.verifyPeer !== undefined && { verifyPeer: this.verifyPeer }),
      ...(this.verifyHost !== undefined && { verifyHost: this.verifyHost })
    };
  }

  getUrl(): string {
    const path = this.path || '';
    return `${this.scheme}://${this.host}:${this.port}${path}`;
  }
}

/**
 * Single socket-based service location
 * Used by: services using a single host/port combination
 */
export class LocationSocketSole extends Location {
  readonly type = 'SOCKET_SOLE' as const;
  host: string;
  port: number;
  encryption: 'none' | 'ssl' | 'tls' | 'starttls';
  verifyPeer: boolean;
  verifyHost: boolean;

  constructor(
    host: string = '',
    port: number = 993,
    encryption: 'none' | 'ssl' | 'tls' | 'starttls' = 'ssl',
    verifyPeer: boolean = true,
    verifyHost: boolean = true
  ) {
    super();
    this.host = host;
    this.port = port;
    this.encryption = encryption;
    this.verifyPeer = verifyPeer;
    this.verifyHost = verifyHost;
  }

  static fromJson(data: ServiceLocationSocketSole): LocationSocketSole {
    return new LocationSocketSole(
      data.host,
      data.port,
      data.encryption,
      data.verifyPeer ?? true,
      data.verifyHost ?? true
    );
  }

  toJson(): ServiceLocationSocketSole {
    return {
      type: this.type,
      host: this.host,
      port: this.port,
      encryption: this.encryption,
      ...(this.verifyPeer !== undefined && { verifyPeer: this.verifyPeer }),
      ...(this.verifyHost !== undefined && { verifyHost: this.verifyHost })
    };
  }
}

/**
 * Split socket-based service location
 * Used by: traditional IMAP/SMTP configurations
 */
export class LocationSocketSplit extends Location {
  readonly type = 'SOCKET_SPLIT' as const;
  inboundHost: string;
  inboundPort: number;
  inboundEncryption: 'none' | 'ssl' | 'tls' | 'starttls';
  outboundHost: string;
  outboundPort: number;
  outboundEncryption: 'none' | 'ssl' | 'tls' | 'starttls';
  inboundVerifyPeer: boolean;
  inboundVerifyHost: boolean;
  outboundVerifyPeer: boolean;
  outboundVerifyHost: boolean;

  constructor(
    inboundHost: string = '',
    inboundPort: number = 993,
    inboundEncryption: 'none' | 'ssl' | 'tls' | 'starttls' = 'ssl',
    outboundHost: string = '',
    outboundPort: number = 465,
    outboundEncryption: 'none' | 'ssl' | 'tls' | 'starttls' = 'ssl',
    inboundVerifyPeer: boolean = true,
    inboundVerifyHost: boolean = true,
    outboundVerifyPeer: boolean = true,
    outboundVerifyHost: boolean = true
  ) {
    super();
    this.inboundHost = inboundHost;
    this.inboundPort = inboundPort;
    this.inboundEncryption = inboundEncryption;
    this.outboundHost = outboundHost;
    this.outboundPort = outboundPort;
    this.outboundEncryption = outboundEncryption;
    this.inboundVerifyPeer = inboundVerifyPeer;
    this.inboundVerifyHost = inboundVerifyHost;
    this.outboundVerifyPeer = outboundVerifyPeer;
    this.outboundVerifyHost = outboundVerifyHost;
  }

  static fromJson(data: ServiceLocationSocketSplit): LocationSocketSplit {
    return new LocationSocketSplit(
      data.inboundHost,
      data.inboundPort,
      data.inboundEncryption,
      data.outboundHost,
      data.outboundPort,
      data.outboundEncryption,
      data.inboundVerifyPeer ?? true,
      data.inboundVerifyHost ?? true,
      data.outboundVerifyPeer ?? true,
      data.outboundVerifyHost ?? true
    );
  }

  toJson(): ServiceLocationSocketSplit {
    return {
      type: this.type,
      inboundHost: this.inboundHost,
      inboundPort: this.inboundPort,
      inboundEncryption: this.inboundEncryption,
      outboundHost: this.outboundHost,
      outboundPort: this.outboundPort,
      outboundEncryption: this.outboundEncryption,
      ...(this.inboundVerifyPeer !== undefined && { inboundVerifyPeer: this.inboundVerifyPeer }),
      ...(this.inboundVerifyHost !== undefined && { inboundVerifyHost: this.inboundVerifyHost }),
      ...(this.outboundVerifyPeer !== undefined && { outboundVerifyPeer: this.outboundVerifyPeer }),
      ...(this.outboundVerifyHost !== undefined && { outboundVerifyHost: this.outboundVerifyHost })
    };
  }
}

/**
 * File-based service location
 * Used by: local file system providers
 */
export class LocationFile extends Location {
  readonly type = 'FILE' as const;
  path: string;

  constructor(path: string = '') {
    super();
    this.path = path;
  }

  static fromJson(data: ServiceLocationFile): LocationFile {
    return new LocationFile(data.path);
  }

  toJson(): ServiceLocationFile {
    return {
      type: this.type,
      path: this.path
    };
  }
}