name: "Semantic Version"
description: "Calculate semantic version using semver-generator (built from source to avoid Docker :latest bootstrap loop)"

inputs:
  config-file:
    description: "Path to semver config file"
    required: false
    default: "semver.yaml"
  semver-version:
    description: "Ref of lukaszraczylo/semver-generator to install (branch, tag, or commit SHA)"
    required: false
    default: "main"
  go-version:
    description: "Go version to use when installing semver-generator"
    required: false
    default: ">=1.24"

outputs:
  version:
    description: "The calculated version (without v prefix)"
    value: ${{ steps.format.outputs.version }}
  version_tag:
    description: "The version tag (with v prefix)"
    value: ${{ steps.format.outputs.version_tag }}

runs:
  using: "composite"
  steps:
    - name: Setup Go
      uses: actions/setup-go@v6
      with:
        go-version: ${{ inputs.go-version }}

    - name: Install semver-generator from source
      shell: bash
      env:
        SEMVER_REF: ${{ inputs.semver-version }}
      run: |
        set -euo pipefail
        # GOPROXY=direct avoids stale module-proxy cache when SEMVER_REF
        # points to a commit that was just pushed (e.g. semver-generator
        # bootstrapping its own release).
        GOPROXY=direct GOFLAGS=-mod=mod \
          go install "github.com/lukaszraczylo/semver-generator@${SEMVER_REF}"
        echo "$(go env GOPATH)/bin" >> "$GITHUB_PATH"

    - name: Calculate version
      id: semver
      shell: bash
      env:
        CONFIG_FILE: ${{ inputs.config-file }}
      run: |
        set -euo pipefail
        OUT=$(semver-generator generate -l -c "${CONFIG_FILE}")
        echo "${OUT}"
        VERSION=$(printf '%s\n' "${OUT}" | sed -e 's|SEMVER ||g' | tr -d '[:space:]')
        echo "semantic_version=${VERSION}" >> "$GITHUB_OUTPUT"

    - name: Format version
      id: format
      shell: bash
      env:
        VERSION: ${{ steps.semver.outputs.semantic_version }}
      run: |
        set -euo pipefail
        echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
        echo "version_tag=v${VERSION}" >> "$GITHUB_OUTPUT"
        echo "Version: v${VERSION}"