import * as plugins from '../plugins.js';
import type {
  IPrinterCapabilities,
  IPrintOptions,
  IPrintJob,
} from '../interfaces/index.js';

/**
 * IPP protocol wrapper using the ipp npm package
 */
export class IppProtocol {
  private printerUrl: string;
  private printer: ReturnType<typeof plugins.ipp.Printer>;

  constructor(address: string, port: number, path: string = '/ipp/print') {
    this.printerUrl = `ipp://${address}:${port}${path}`;
    this.printer = plugins.ipp.Printer(this.printerUrl);
  }

  /**
   * Get printer attributes/capabilities
   */
  public async getAttributes(): Promise<IPrinterCapabilities> {
    return new Promise((resolve, reject) => {
      this.printer.execute(
        'Get-Printer-Attributes',
        null,
        (err: Error | null, res: Record<string, unknown>) => {
          if (err) {
            reject(err);
            return;
          }

          try {
            const attrs = res['printer-attributes-tag'] as Record<string, unknown> || {};
            resolve(this.parseCapabilities(attrs));
          } catch (parseErr) {
            reject(parseErr);
          }
        }
      );
    });
  }

  /**
   * Print a document
   */
  public async print(data: Buffer, options?: IPrintOptions): Promise<IPrintJob> {
    const msg = this.buildPrintMessage(options);

    return new Promise((resolve, reject) => {
      this.printer.execute(
        'Print-Job',
        { ...msg, data },
        (err: Error | null, res: Record<string, unknown>) => {
          if (err) {
            reject(err);
            return;
          }

          try {
            const jobAttrs = res['job-attributes-tag'] as Record<string, unknown> || {};
            resolve(this.parseJobInfo(jobAttrs));
          } catch (parseErr) {
            reject(parseErr);
          }
        }
      );
    });
  }

  /**
   * Get all jobs
   */
  public async getJobs(): Promise<IPrintJob[]> {
    return new Promise((resolve, reject) => {
      this.printer.execute(
        'Get-Jobs',
        {
          'operation-attributes-tag': {
            'requesting-user-name': 'devicemanager',
            'which-jobs': 'not-completed',
          },
        },
        (err: Error | null, res: Record<string, unknown>) => {
          if (err) {
            reject(err);
            return;
          }

          try {
            const jobs: IPrintJob[] = [];
            const jobTags = res['job-attributes-tag'];

            if (Array.isArray(jobTags)) {
              for (const jobAttrs of jobTags) {
                jobs.push(this.parseJobInfo(jobAttrs as Record<string, unknown>));
              }
            } else if (jobTags && typeof jobTags === 'object') {
              jobs.push(this.parseJobInfo(jobTags as Record<string, unknown>));
            }

            resolve(jobs);
          } catch (parseErr) {
            reject(parseErr);
          }
        }
      );
    });
  }

  /**
   * Get specific job info
   */
  public async getJobInfo(jobId: number): Promise<IPrintJob> {
    return new Promise((resolve, reject) => {
      this.printer.execute(
        'Get-Job-Attributes',
        {
          'operation-attributes-tag': {
            'job-id': jobId,
          },
        },
        (err: Error | null, res: Record<string, unknown>) => {
          if (err) {
            reject(err);
            return;
          }

          try {
            const jobAttrs = res['job-attributes-tag'] as Record<string, unknown> || {};
            resolve(this.parseJobInfo(jobAttrs));
          } catch (parseErr) {
            reject(parseErr);
          }
        }
      );
    });
  }

  /**
   * Cancel a job
   */
  public async cancelJob(jobId: number): Promise<void> {
    return new Promise((resolve, reject) => {
      this.printer.execute(
        'Cancel-Job',
        {
          'operation-attributes-tag': {
            'job-id': jobId,
          },
        },
        (err: Error | null, _res: Record<string, unknown>) => {
          if (err) {
            reject(err);
            return;
          }
          resolve();
        }
      );
    });
  }

  /**
   * Check if printer is available
   */
  public async checkAvailability(): Promise<boolean> {
    try {
      await this.getAttributes();
      return true;
    } catch {
      return false;
    }
  }

  /**
   * Build IPP print message from options
   */
  private buildPrintMessage(options?: IPrintOptions): Record<string, unknown> {
    const operationAttrs: Record<string, unknown> = {
      'requesting-user-name': 'devicemanager',
      'job-name': options?.jobName ?? 'Print Job',
      'document-format': 'application/octet-stream',
    };

    const jobAttrs: Record<string, unknown> = {};

    if (options?.copies && options.copies > 1) {
      jobAttrs['copies'] = options.copies;
    }

    if (options?.mediaSize) {
      jobAttrs['media'] = options.mediaSize;
    }

    if (options?.mediaType) {
      jobAttrs['media-type'] = options.mediaType;
    }

    if (options?.sides) {
      jobAttrs['sides'] = options.sides;
    }

    if (options?.quality) {
      const qualityMap: Record<string, number> = {
        draft: 3,
        normal: 4,
        high: 5,
      };
      jobAttrs['print-quality'] = qualityMap[options.quality] ?? 4;
    }

    if (options?.colorMode) {
      jobAttrs['print-color-mode'] = options.colorMode;
    }

    const msg: Record<string, unknown> = {
      'operation-attributes-tag': operationAttrs,
    };

    if (Object.keys(jobAttrs).length > 0) {
      msg['job-attributes-tag'] = jobAttrs;
    }

    return msg;
  }

  /**
   * Parse printer capabilities from attributes
   */
  private parseCapabilities(attrs: Record<string, unknown>): IPrinterCapabilities {
    const getArray = (key: string): string[] => {
      const value = attrs[key];
      if (Array.isArray(value)) return value.map(String);
      if (value !== undefined) return [String(value)];
      return [];
    };

    const getNumber = (key: string, defaultVal: number): number => {
      const value = attrs[key];
      if (typeof value === 'number') return value;
      if (typeof value === 'string') return parseInt(value) || defaultVal;
      return defaultVal;
    };

    const getBool = (key: string, defaultVal: boolean): boolean => {
      const value = attrs[key];
      if (typeof value === 'boolean') return value;
      if (value === 'true' || value === 1) return true;
      if (value === 'false' || value === 0) return false;
      return defaultVal;
    };

    // Parse resolutions
    const resolutions: number[] = [];
    const resSupported = attrs['printer-resolution-supported'];
    if (Array.isArray(resSupported)) {
      for (const res of resSupported) {
        if (typeof res === 'object' && res !== null && 'x' in res) {
          resolutions.push((res as { x: number }).x);
        } else if (typeof res === 'number') {
          resolutions.push(res);
        }
      }
    }
    if (resolutions.length === 0) {
      resolutions.push(300, 600);
    }

    return {
      colorSupported: getBool('color-supported', false),
      duplexSupported:
        getArray('sides-supported').some((s) =>
          s.includes('two-sided')
        ),
      mediaSizes: getArray('media-supported'),
      mediaTypes: getArray('media-type-supported'),
      resolutions: [...new Set(resolutions)],
      maxCopies: getNumber('copies-supported', 99),
      sidesSupported: getArray('sides-supported'),
      qualitySupported: getArray('print-quality-supported').map(String),
    };
  }

  /**
   * Parse job info from attributes
   */
  private parseJobInfo(attrs: Record<string, unknown>): IPrintJob {
    const getString = (key: string, defaultVal: string): string => {
      const value = attrs[key];
      if (typeof value === 'string') return value;
      if (value !== undefined) return String(value);
      return defaultVal;
    };

    const getNumber = (key: string, defaultVal: number): number => {
      const value = attrs[key];
      if (typeof value === 'number') return value;
      if (typeof value === 'string') return parseInt(value) || defaultVal;
      return defaultVal;
    };

    // Map IPP job state to our state
    const ippState = getNumber('job-state', 3);
    const stateMap: Record<number, IPrintJob['state']> = {
      3: 'pending',     // pending
      4: 'pending',     // pending-held
      5: 'processing',  // processing
      6: 'processing',  // processing-stopped
      7: 'canceled',    // canceled
      8: 'aborted',     // aborted
      9: 'completed',   // completed
    };

    const createdTime = attrs['time-at-creation'];
    const completedTime = attrs['time-at-completed'];

    return {
      id: getNumber('job-id', 0),
      name: getString('job-name', 'Unknown Job'),
      state: stateMap[ippState] ?? 'pending',
      stateReason: getString('job-state-reasons', undefined),
      createdAt: createdTime ? new Date(createdTime as number * 1000) : new Date(),
      completedAt: completedTime ? new Date(completedTime as number * 1000) : undefined,
      pagesPrinted: getNumber('job-media-sheets-completed', undefined),
      pagesTotal: getNumber('job-media-sheets', undefined),
    };
  }
}