import { regEx } from '../../../util/regex.ts';
import { GenericVersioningApi } from '../generic.ts';
import type { GenericVersion, VersioningApi } from '../types.ts';

export const id = 'devbox';
export const displayName = 'devbox';
export const urls = [];
export const supportsRanges = false;

const validPattern = regEx(/^(?:(?:\d|[1-9]\d*)(?:\.(?:\d|[1-9]\d*)){0,2})$/);
const versionPattern = regEx(/^(?:(?:\d|[1-9]\d*)(?:\.(?:\d|[1-9]\d*)){2})$/);

class DevboxVersioningApi extends GenericVersioningApi {
  protected _parse(version: string): GenericVersion | null {
    const matches = validPattern.exec(version);
    if (!matches) {
      return null;
    }
    const release = matches[0].split('.').map(Number);
    return { release };
  }

  override isValid(version: string): boolean {
    if (version === 'latest') {
      return true;
    }
    return this._parse(version) !== null;
  }

  override isVersion(version: string): boolean {
    if (version === 'latest') {
      return false;
    }
    const matches = versionPattern.exec(version);
    return !!matches;
  }

  override matches(version: string, range: string): boolean {
    return this.isVersion(version) && this.equals(version, range);
  }

  protected override _compare(version: string, other: string): number {
    const parsed1 = this._parse(version);
    const parsed2 = this._parse(other);

    // Treat "latest" as * and always return equal
    if (other === 'latest' && parsed1) {
      return 0;
    }

    // If either version is invalid, return unequal
    if (!(parsed1 && parsed2)) {
      return 1;
    }
    // support variable length compare
    const length = Math.max(parsed1.release.length, parsed2.release.length);
    for (let i = 0; i < length; i += 1) {
      // 2.1 and 2.1.0 are equivalent
      const part1 = parsed1.release[i];
      const part2 = parsed2.release[i];
      // if part1 or part2 is undefined, we should treat them as equal
      // e.g. 1.0.0 === 1.0
      if (part1 !== undefined && part2 !== undefined && part1 !== part2) {
        return part1 - part2;
      }
    }
    return 0;
  }
}

export const api: VersioningApi = new DevboxVersioningApi();

export default api;