name: Bump Version

on:
  workflow_dispatch:
    inputs:
      version_bump:
        description: "Version bump type"
        type: choice
        options:
          - patch
          - minor
          - major
        default: patch
        required: true

jobs:
  bump:
    name: "Bump version and tag"
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Compute new version
        id: compute
        shell: bash
        run: |
          set -euo pipefail
          BUMP="${{ inputs.version_bump }}"
          CURRENT_VERSION=$(jq -r '.version' "MCPForUnity/package.json")
          echo "Current version: $CURRENT_VERSION"

          IFS='.' read -r MA MI PA <<< "$CURRENT_VERSION"
          case "$BUMP" in
            major)
              ((MA+=1)); MI=0; PA=0
              ;;
            minor)
              ((MI+=1)); PA=0
              ;;
            patch)
              ((PA+=1))
              ;;
            *)
              echo "Unknown version_bump: $BUMP" >&2
              exit 1
              ;;
          esac

          NEW_VERSION="$MA.$MI.$PA"
          echo "New version: $NEW_VERSION"
          echo "new_version=$NEW_VERSION" >> "$GITHUB_OUTPUT"
          echo "current_version=$CURRENT_VERSION" >> "$GITHUB_OUTPUT"

      - name: Update files to new version
        env:
          NEW_VERSION: ${{ steps.compute.outputs.new_version }}
        shell: bash
        run: |
          set -euo pipefail

          echo "Updating MCPForUnity/package.json to $NEW_VERSION"
          jq ".version = \"${NEW_VERSION}\"" MCPForUnity/package.json > MCPForUnity/package.json.tmp
          mv MCPForUnity/package.json.tmp MCPForUnity/package.json

          echo "Updating MCPForUnity/UnityMcpServer~/src/pyproject.toml to $NEW_VERSION"
          sed -i '0,/^version = ".*"/s//version = "'"$NEW_VERSION"'"/' "MCPForUnity/UnityMcpServer~/src/pyproject.toml"

          echo "Updating MCPForUnity/UnityMcpServer~/src/server_version.txt to $NEW_VERSION"
          echo "$NEW_VERSION" > "MCPForUnity/UnityMcpServer~/src/server_version.txt"

      - name: Commit and push changes
        env:
          NEW_VERSION: ${{ steps.compute.outputs.new_version }}
        shell: bash
        run: |
          set -euo pipefail
          git config user.name "GitHub Actions"
          git config user.email "actions@github.com"
          git add MCPForUnity/package.json "MCPForUnity/UnityMcpServer~/src/pyproject.toml" "MCPForUnity/UnityMcpServer~/src/server_version.txt"
          if git diff --cached --quiet; then
            echo "No version changes to commit."
          else
            git commit -m "chore: bump version to ${NEW_VERSION}"
          fi

          BRANCH="${GITHUB_HEAD_REF:-${GITHUB_REF_NAME}}"
          echo "Pushing to branch: $BRANCH"
          git push origin "$BRANCH"

      - name: Create and push tag
        env:
          NEW_VERSION: ${{ steps.compute.outputs.new_version }}
        shell: bash
        run: |
          set -euo pipefail
          TAG="v${NEW_VERSION}"
          echo "Preparing to create tag $TAG"

          if git ls-remote --tags origin | grep -q "refs/tags/$TAG$"; then
            echo "Tag $TAG already exists on remote. Skipping tag creation."
            exit 0
          fi

          git tag -a "$TAG" -m "Version ${NEW_VERSION}"
          git push origin "$TAG"

      - name: Package server for release
        env:
          NEW_VERSION: ${{ steps.compute.outputs.new_version }}
        shell: bash
        run: |
          set -euo pipefail
          cd MCPForUnity
          zip -r ../mcp-for-unity-server-v${NEW_VERSION}.zip UnityMcpServer~
          cd ..
          ls -lh mcp-for-unity-server-v${NEW_VERSION}.zip
          echo "Server package created: mcp-for-unity-server-v${NEW_VERSION}.zip"

      - name: Create GitHub release with server artifact
        env:
          NEW_VERSION: ${{ steps.compute.outputs.new_version }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        shell: bash
        run: |
          set -euo pipefail
          TAG="v${NEW_VERSION}"

          # Create release
          gh release create "$TAG" \
            --title "v${NEW_VERSION}" \
            --notes "Release v${NEW_VERSION}" \
            "mcp-for-unity-server-v${NEW_VERSION}.zip#MCP Server v${NEW_VERSION}"