import { expect } from 'chai';
import * as sinon from 'sinon';

import { SpawnSyncReturns } from 'node:child_process';

import { nextVersion } from '../script/release/version-bumper';
import { ifdescribe } from './lib/spec-helpers';

class GitFake {
  branches: {
    [key: string]: string[];
  };

  constructor() {
    this.branches = {};
  }

  setBranch(channel: string): void {
    this.branches[channel] = [];
  }

  setVersion(channel: string, latestTag: string): void {
    const tags = [latestTag];
    if (channel === 'alpha') {
      const versionStrs = latestTag.split(`${channel}.`);
      const latest = parseInt(versionStrs[1]);

      for (let i = latest; i >= 1; i--) {
        tags.push(`${versionStrs[0]}${channel}.${latest - i}`);
      }
    }

    this.branches[channel] = tags;
  }

  // eslint-disable-next-line @typescript-eslint/no-unused-vars
  exec(command: string, args: string[], options?: any): SpawnSyncReturns<string> {
    let stdout = '';
    const stderr = '';
    const status = 0;

    // handle for promoting from current master HEAD
    let branch = 'stable';
    const v = args[2] === 'HEAD' ? 'stable' : args[3];
    if (v.includes('nightly')) branch = 'nightly';
    if (v.includes('alpha')) branch = 'alpha';
    if (v.includes('beta')) branch = 'beta';

    if (!this.branches[branch]) this.setBranch(branch);

    stdout = this.branches[branch].join('\n');
    return { status, stdout, stderr, pid: 0, output: [null, stdout, stderr], signal: null };
  }
}

describe('version-bumper', () => {
  ifdescribe(!(process.platform === 'linux' && process.arch.indexOf('arm') === 0) && process.platform !== 'darwin')(
    'nextVersion',
    () => {
      describe('bump versions', () => {
        const nightlyPattern = /[0-9.]*(-nightly.(\d{4})(\d{2})(\d{2}))$/g;
        const betaPattern = /[0-9.]*(-beta[0-9.]*)/g;

        it('bumps to nightly from stable', async () => {
          const version = 'v2.0.0';
          const next = await nextVersion('nightly', version);
          const matches = next.match(nightlyPattern);
          expect(matches).to.have.lengthOf(1);
        });

        it('bumps to nightly from beta', async () => {
          const version = 'v2.0.0-beta.1';
          const next = await nextVersion('nightly', version);
          const matches = next.match(nightlyPattern);
          expect(matches).to.have.lengthOf(1);
        });

        it('bumps to nightly from nightly', async () => {
          const version = 'v2.0.0-nightly.19950901';
          const next = await nextVersion('nightly', version);
          const matches = next.match(nightlyPattern);
          expect(matches).to.have.lengthOf(1);
        });

        it('bumps to a nightly version above our switch from N-0-x to N-x-y branch names', async () => {
          const version = 'v2.0.0-nightly.19950901';
          const next = await nextVersion('nightly', version);
          // If it starts with v8 then we didn't bump above the 8-x-y branch
          expect(next.startsWith('v8')).to.equal(false);
        });

        it('throws error when bumping to beta from stable', () => {
          const version = 'v2.0.0';
          return expect(nextVersion('beta', version)).to.be.rejectedWith('Cannot bump to beta from stable.');
        });

        it('bumps to beta from nightly', async () => {
          const version = 'v2.0.0-nightly.19950901';
          const next = await nextVersion('beta', version);
          const matches = next.match(betaPattern);
          expect(matches).to.have.lengthOf(1);
        });

        it('bumps to beta from beta', async () => {
          const version = 'v2.0.0-beta.8';
          const next = await nextVersion('beta', version);
          expect(next).to.equal('2.0.0-beta.9');
        });

        it('bumps to beta from beta if the previous beta is at least beta.10', async () => {
          const version = 'v6.0.0-beta.15';
          const next = await nextVersion('beta', version);
          expect(next).to.equal('6.0.0-beta.16');
        });

        it('bumps to stable from beta', async () => {
          const version = 'v2.0.0-beta.1';
          const next = await nextVersion('stable', version);
          expect(next).to.equal('2.0.0');
        });

        it('bumps to stable from stable', async () => {
          const version = 'v2.0.0';
          const next = await nextVersion('stable', version);
          expect(next).to.equal('2.0.1');
        });

        it('bumps to minor from stable', async () => {
          const version = 'v2.0.0';
          const next = await nextVersion('minor', version);
          expect(next).to.equal('2.1.0');
        });

        it('bumps to stable from nightly', async () => {
          const version = 'v2.0.0-nightly.19950901';
          const next = await nextVersion('stable', version);
          expect(next).to.equal('2.0.0');
        });

        it('throws on an invalid version', () => {
          const version = 'vI.AM.INVALID';
          return expect(nextVersion('beta', version)).to.be.rejectedWith(`Invalid current version: ${version}`);
        });

        it('throws on an invalid bump type', () => {
          const version = 'v2.0.0';
          return expect(
            // @ts-expect-error 'WRONG' is not a valid bump type
            nextVersion('WRONG', version)
          ).to.be.rejectedWith('Invalid bump type.');
        });
      });
    }
  );

  // If we don't plan on continuing to support an alpha channel past Electron 15,
  // these tests will be removed. Otherwise, integrate into the bump versions tests
  describe('bump versions - alpha channel', () => {
    const alphaPattern = /[0-9.]*(-alpha[0-9.]*)/g;
    const betaPattern = /[0-9.]*(-beta[0-9.]*)/g;

    const sandbox = sinon.createSandbox();
    const gitFake = new GitFake();

    beforeEach(() => {
      const wrapper = (command: unknown, args: unknown, options?: unknown) => {
        if (command === 'git' && Array.isArray(args)) {
          return gitFake.exec(command as string, args as string[], options);
        }
        // Default behavior for non-git commands
        return { status: 0, stdout: '', stderr: '', pid: 0, output: [null, '', ''], signal: null };
      };
      sandbox.stub(require('node:child_process'), 'spawnSync').callsFake(wrapper);
    });

    afterEach(() => {
      gitFake.branches = {};
      sandbox.restore();
    });

    it('bumps to alpha from nightly', async () => {
      const version = 'v2.0.0-nightly.19950901';
      gitFake.setVersion('nightly', version);
      const next = await nextVersion('alpha', version);
      const matches = next.match(alphaPattern);
      expect(matches).to.have.lengthOf(1);
    });

    it('throws error when bumping to alpha from stable', () => {
      const version = 'v2.0.0';
      return expect(nextVersion('alpha', version)).to.be.rejectedWith('Cannot bump to alpha from stable.');
    });

    it('bumps to alpha from alpha', async () => {
      const version = 'v2.0.0-alpha.8';
      gitFake.setVersion('alpha', version);
      const next = await nextVersion('alpha', version);
      expect(next).to.equal('2.0.0-alpha.9');
    });

    it('bumps to alpha from alpha if the previous alpha is at least alpha.10', async () => {
      const version = 'v6.0.0-alpha.15';
      gitFake.setVersion('alpha', version);
      const next = await nextVersion('alpha', version);
      expect(next).to.equal('6.0.0-alpha.16');
    });

    it('bumps to beta from alpha', async () => {
      const version = 'v2.0.0-alpha.8';
      gitFake.setVersion('alpha', version);
      const next = await nextVersion('beta', version);
      const matches = next.match(betaPattern);
      expect(matches).to.have.lengthOf(1);
      expect(next).to.equal('2.0.0-beta.1');
    });
  });
});
