import { expect } from 'chai';
import { nextVersion, shouldUpdateSupported, updateSupported } from '../script/release/version-bumper';
import * as utils from '../script/release/version-utils';
import { ifdescribe } from './spec-helpers';
const { promises: fs } = require('fs');
const path = require('path');

const fixtureDir = path.resolve(__dirname, 'fixtures', 'version-bumper', 'fixture_support.md');
const readFile = fs.readFile;
const writeFile = fs.writeFile;

describe('version-bumper', () => {
  describe('makeVersion', () => {
    it('makes a version with a period delimeter', () => {
      const components = {
        major: 2,
        minor: 0,
        patch: 0
      };

      const version = utils.makeVersion(components, '.');
      expect(version).to.equal('2.0.0');
    });

    it('makes a version with a period delimeter and a partial pre', () => {
      const components = {
        major: 2,
        minor: 0,
        patch: 0,
        pre: ['nightly', 12345678]
      };

      const version = utils.makeVersion(components, '.', utils.preType.PARTIAL);
      expect(version).to.equal('2.0.0.12345678');
    });

    it('makes a version with a period delimeter and a full pre', () => {
      const components = {
        major: 2,
        minor: 0,
        patch: 0,
        pre: ['nightly', 12345678]
      };

      const version = utils.makeVersion(components, '.', utils.preType.FULL);
      expect(version).to.equal('2.0.0-nightly.12345678');
    });
  });

  describe('updateSupported', () => {
    let restore: any;
    before(async () => {
      restore = await readFile(fixtureDir, 'utf8');
    });

    afterEach(async () => {
      await writeFile(fixtureDir, restore, 'utf8');
    });

    it('updates correctly when a new stable version is promoted from beta', async () => {
      const version = '4.0.0';
      const currentVersion = '4.0.0-beta.29';
      if (shouldUpdateSupported('stable', currentVersion, version)) {
        await updateSupported(version, fixtureDir);
      }
      const contents = await readFile(fixtureDir, 'utf8');

      expect(contents).to.contain('4.x.y\n* 3.x.y\n* 2.x.y');
    });

    it('should not update when a new stable patch version is promoted', async () => {
      const version = '3.0.1';
      const currentVersion = '3.0.0';
      if (shouldUpdateSupported('stable', currentVersion, version)) {
        await updateSupported(version, fixtureDir);
      }
      const contents = await readFile(fixtureDir, 'utf8');

      expect(contents).to.contain('3.x.y\n* 2.x.y\n* 1.x.y');
    });

    it('should not update when a new stable minor version is promoted', async () => {
      const version = '3.1.0';
      const currentVersion = '3.0.0';
      if (shouldUpdateSupported('minor', currentVersion, version)) {
        await updateSupported(version, fixtureDir);
      }
      const contents = await readFile(fixtureDir, 'utf8');

      expect(contents).to.contain('3.x.y\n* 2.x.y\n* 1.x.y');
    });

    it('should not update when a new beta.1 version is promoted', async () => {
      const version = '5.0.0-beta.1';
      const currentVersion = '4.0.0-beta.29';
      if (shouldUpdateSupported('beta', currentVersion, version)) {
        await updateSupported(version, fixtureDir);
      }
      const contents = await readFile(fixtureDir, 'utf8');

      expect(contents).to.contain('3.x.y\n* 2.x.y\n* 1.x.y');
    });

    it('should not update when a new beta.12 version is promoted', async () => {
      const version = '4.0.0-beta.12';
      const currentVersion = '4.0.0-beta.11';
      if (shouldUpdateSupported('beta', currentVersion, version)) {
        await updateSupported(version, fixtureDir);
      }
      const contents = await readFile(fixtureDir, 'utf8');

      expect(contents).to.contain('3.x.y\n* 2.x.y\n* 1.x.y');
    });

    it('should update when a new major nightly version is promoted', async () => {
      const version = '4.0.0-nightly.19950901';
      const currentVersion = '3.0.0-nightly.19950828';
      if (shouldUpdateSupported('nightly', currentVersion, version)) {
        await updateSupported(version, fixtureDir);
      }
      const contents = await readFile(fixtureDir, 'utf8');

      expect(contents).to.contain('4.x.y\n* 3.x.y\n* 2.x.y');
    });

    it('should not update when a new nightly version is promoted', async () => {
      const version = '3.0.0-nightly.19950901';
      const currentVersion = '3.0.0-nightly.19950828';
      if (shouldUpdateSupported('nightly', currentVersion, version)) {
        await updateSupported(version, fixtureDir);
      }
      const contents = await readFile(fixtureDir, 'utf8');

      expect(contents).to.contain('3.x.y\n* 2.x.y\n* 1.x.y');
    });
  });

  // On macOS Circle CI we don't have a real git environment due to running
  // gclient sync on a linux machine. These tests therefore don't run as expected.
  ifdescribe(!(process.platform === 'linux' && process.arch === 'arm') && process.platform !== 'darwin')('nextVersion', () => {
    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.10';
      const next = await nextVersion('beta', version);
      // Last 6.0.0 beta we did was beta.15
      // So we expect a beta.16 here
      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(
        nextVersion('WRONG', version)
      ).to.be.rejectedWith('Invalid bump type.');
    });
  });
});