name: update-deps

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

on:
  workflow_dispatch:
  schedule:
    - cron: '0 9 * * *'
  push:
    branches:
      - 'main'

jobs:
  update:
    runs-on: ubuntu-24.04
    environment: update-deps # secrets are gated by this environment
    timeout-minutes: 10
    permissions:
      contents: write
      pull-requests: write
    strategy:
      fail-fast: false
      matrix:
        dep:
          - docker
          - buildx
          - buildkit
          - compose
          - cosign
          - regctl
          - undock
    steps:
      -
        name: GitHub auth token from GitHub App
        id: write-app
        uses: actions/create-github-app-token@1b10c78c7865c340bc4f6099eb2f838309f1e8c3 # v3.1.1
        with:
          client-id: ${{ vars.GHACTIONS_REPO_WRITE_CLIENT_ID }}
          private-key: ${{ secrets.GHACTIONS_REPO_WRITE_PRIVATE_KEY }}
          owner: docker
          repositories: actions-toolkit
      -
        name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          token: ${{ steps.write-app.outputs.token }}
          fetch-depth: 0
          persist-credentials: false
      -
        name: Update dependency
        id: update
        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
        env:
          INPUT_DEP: ${{ matrix.dep }}
        with:
          script: |
            const fs = require('fs');
            const path = require('path');

            const dep = core.getInput('dep');

            function escapeRegExp(value) {
              return value.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
            }

            function formatList(values) {
              const quoted = values.map(value => `\`${value}\``);
              if (quoted.length === 1) {
                return quoted[0];
              }
              if (quoted.length === 2) {
                return `${quoted[0]} and ${quoted[1]}`;
              }
              return `${quoted.slice(0, -1).join(', ')}, and ${quoted.at(-1)}`;
            }

            function unique(values) {
              return [...new Set(values)];
            }

            function stripLeadingV(value) {
              return value.startsWith('v') ? value.slice(1) : value;
            }

            function stripDockerTag(value) {
              return value.replace(/^docker-v/, '').replace(/^v/, '');
            }

            function majorMinor(value) {
              const match = value.match(/^(\d+\.\d+)/);
              if (!match) {
                throw new Error(`Unable to derive major.minor version from ${value}`);
              }
              return match[1];
            }

            function readJson(relativePath) {
              const absolutePath = path.join(process.env.GITHUB_WORKSPACE, relativePath);
              return JSON.parse(fs.readFileSync(absolutePath, 'utf8'));
            }

            function readLatestTag(relativePath) {
              const tag = readJson(relativePath)?.latest?.tag_name;
              if (!tag) {
                throw new Error(`Unable to resolve latest tag from ${relativePath}`);
              }
              return tag;
            }

            function dockerfileArgPattern(key) {
              return new RegExp(`^(ARG ${escapeRegExp(key)}=)(.+)$`, 'm');
            }

            function workflowEnvPattern(key) {
              return new RegExp(`^(  ${escapeRegExp(key)}: ")([^"]*)(")$`, 'm');
            }

            const dependencyConfigs = {
              docker: {
                name: 'Docker version',
                branch: 'deps/docker-version',
                sourceUrl: 'https://github.com/docker/actions-toolkit/blob/main/.github/docker-releases.json',
                async resolve() {
                  const tag = readLatestTag('.github/docker-releases.json');
                  const version = majorMinor(stripDockerTag(tag));
                  return {
                    titleValue: version,
                    targets: [
                      {
                        path: 'dev.Dockerfile',
                        key: 'DOCKER_VERSION',
                        value: version,
                        pattern: dockerfileArgPattern('DOCKER_VERSION')
                      }
                    ]
                  };
                }
              },
              buildx: {
                name: 'Buildx version',
                branch: 'deps/buildx-version',
                sourceUrl: 'https://github.com/docker/actions-toolkit/blob/main/.github/buildx-releases.json',
                async resolve() {
                  const tag = readLatestTag('.github/buildx-releases.json');
                  return {
                    titleValue: tag,
                    targets: [
                      {
                        path: 'dev.Dockerfile',
                        key: 'BUILDX_VERSION',
                        value: stripLeadingV(tag),
                        pattern: dockerfileArgPattern('BUILDX_VERSION')
                      },
                      {
                        path: '.github/workflows/test.yml',
                        key: 'BUILDX_VERSION',
                        value: tag,
                        pattern: workflowEnvPattern('BUILDX_VERSION')
                      }
                    ]
                  };
                }
              },
              buildkit: {
                name: 'BuildKit image',
                branch: 'deps/buildkit-image',
                sourceUrl: 'https://github.com/moby/buildkit/releases/latest',
                async resolve({github}) {
                  const release = await github.rest.repos.getLatestRelease({
                    owner: 'moby',
                    repo: 'buildkit'
                  });
                  const image = `moby/buildkit:${release.data.tag_name}`;
                  return {
                    titleValue: image,
                    targets: [
                      {
                        path: '.github/workflows/test.yml',
                        key: 'BUILDKIT_IMAGE',
                        value: image,
                        pattern: workflowEnvPattern('BUILDKIT_IMAGE')
                      }
                    ]
                  };
                }
              },
              compose: {
                name: 'Compose version',
                branch: 'deps/compose-version',
                sourceUrl: 'https://github.com/docker/actions-toolkit/blob/main/.github/compose-releases.json',
                async resolve() {
                  const tag = readLatestTag('.github/compose-releases.json');
                  return {
                    titleValue: tag,
                    targets: [
                      {
                        path: 'dev.Dockerfile',
                        key: 'COMPOSE_VERSION',
                        value: stripLeadingV(tag),
                        pattern: dockerfileArgPattern('COMPOSE_VERSION')
                      }
                    ]
                  };
                }
              },
              undock: {
                name: 'Undock version',
                branch: 'deps/undock-version',
                sourceUrl: 'https://github.com/docker/actions-toolkit/blob/main/.github/undock-releases.json',
                async resolve() {
                  const tag = readLatestTag('.github/undock-releases.json');
                  return {
                    titleValue: tag,
                    targets: [
                      {
                        path: 'dev.Dockerfile',
                        key: 'UNDOCK_VERSION',
                        value: stripLeadingV(tag),
                        pattern: dockerfileArgPattern('UNDOCK_VERSION')
                      }
                    ]
                  };
                }
              },
              regctl: {
                name: 'Regctl version',
                branch: 'deps/regctl-version',
                sourceUrl: 'https://github.com/docker/actions-toolkit/blob/main/.github/regclient-releases.json',
                async resolve() {
                  const tag = readLatestTag('.github/regclient-releases.json');
                  return {
                    titleValue: tag,
                    targets: [
                      {
                        path: 'dev.Dockerfile',
                        key: 'REGCTL_VERSION',
                        value: tag,
                        pattern: dockerfileArgPattern('REGCTL_VERSION')
                      }
                    ]
                  };
                }
              },
              cosign: {
                name: 'Cosign version',
                branch: 'deps/cosign-version',
                sourceUrl: 'https://github.com/docker/actions-toolkit/blob/main/.github/cosign-releases.json',
                async resolve() {
                  const tag = readLatestTag('.github/cosign-releases.json');
                  return {
                    titleValue: tag,
                    targets: [
                      {
                        path: 'dev.Dockerfile',
                        key: 'COSIGN_VERSION',
                        value: tag,
                        pattern: dockerfileArgPattern('COSIGN_VERSION')
                      }
                    ]
                  };
                }
              }
            };

            const config = dependencyConfigs[dep];
            if (!config) {
              core.setFailed(`Unknown dependency ${dep}`);
              return;
            }

            const resolved = await config.resolve({github});
            const currentValues = [];
            const changedFiles = [];

            for (const target of resolved.targets) {
              const absolutePath = path.join(process.env.GITHUB_WORKSPACE, target.path);
              const content = fs.readFileSync(absolutePath, 'utf8');
              const match = content.match(target.pattern);
              if (!match) {
                throw new Error(`Missing ${target.key} in ${target.path}`);
              }
              currentValues.push(match[2]);
              if (match[2] === target.value) {
                continue;
              }
              const updatedContent = content.replace(target.pattern, (...args) => {
                const groups = args.slice(1, -2);
                const prefix = groups[0];
                const suffix = groups[2] || '';
                return `${prefix}${target.value}${suffix}`;
              });
              fs.writeFileSync(absolutePath, updatedContent, 'utf8');
              changedFiles.push(target.path);
            }

            core.info(`Resolved ${config.name} from ${config.sourceUrl}`);
            if (changedFiles.length === 0) {
              core.info(`No workspace changes needed for ${config.name}`);
            } else {
              core.info(`New ${config.name} ${resolved.titleValue} found`);
            }

            core.setOutput('branch', config.branch);
            core.setOutput('title', `chore(deps): update ${config.name} to ${resolved.titleValue}`);
            core.setOutput('before', formatList(unique(currentValues)));
            core.setOutput('files', formatList(unique(changedFiles)));
            core.setOutput('source-url', config.sourceUrl);
      -
        name: Create pull request
        uses: peter-evans/create-pull-request@5f6978faf089d4d20b00c7766989d076bb2fc7f1 # v8.1.1
        with:
          base: main
          branch: ${{ steps.update.outputs.branch }}
          token: ${{ steps.write-app.outputs.token }}
          commit-message: ${{ steps.update.outputs.title }}
          title: ${{ steps.update.outputs.title }}
          signoff: true
          delete-branch: true
          body: |
            This updates the pinned value from ${{ steps.update.outputs.before }} in ${{ steps.update.outputs.files }}.

            The source of truth for this update is ${{ steps.update.outputs.source-url }}.