name: Build Image

on:
  push:
  pull_request:
  workflow_dispatch:
    inputs:
      GO_VERSION:

env:
  ENDPOINT: "linuxserver/mods" #don't modify
  BASEIMAGE: "code-server" #replace
  MODNAME: "golang" #replace

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Build image
        run: |
          # Set version
          GO_WEBSITE=$(curl -sLX GET https://go.dev/dl/)
          GO_VERSION=${{ github.event.inputs.GO_VERSION }}
          GO_VERSION=${GO_VERSION:-$(echo "$GO_WEBSITE" | grep -o '<span.*>.*linux-amd64.*</span>' | grep -oP '(?<=go).*(?=.linux)')}
          if [ $(echo "$GO_VERSION" | tr -d -c '.' | awk '{ print length; }') = "1" ]; then GO_TAG="${GO_VERSION}.0"; else GO_TAG="${GO_VERSION}"; fi
          echo "GO_TAG=${GO_TAG}" >> $GITHUB_ENV
          GO_TAG_MINOR=$(echo "$GO_TAG" | awk 'BEGIN{FS=OFS="."} NF--')
          echo "GO_TAG_MINOR=${GO_TAG_MINOR}" >> $GITHUB_ENV
          GO_TAG_MAJOR=$(echo "$GO_TAG_MINOR" | awk 'BEGIN{FS=OFS="."} NF--')
          echo "GO_TAG_MAJOR=${GO_TAG_MAJOR}" >> $GITHUB_ENV
          echo "GO_TAG is $GO_TAG GO_TAG_MINOR is $GO_TAG_MINOR GO_TAG_MAJOR is $GO_TAG_MAJOR"
          if [ "$GO_VERSION" == $(echo "$GO_WEBSITE" | grep -o '<span.*>.*linux-amd64.*</span>' | grep -oP '(?<=go).*(?=.linux)') ]; then LATEST="true"; fi
          echo "LATEST=${LATEST}" >> $GITHUB_ENV
          if [ "$GO_VERSION" == $(echo "$GO_WEBSITE" | grep -o 'download" href=".*linux-amd64.tar.gz">' | grep -oP '(?<=\/go)[1-9].*(?=.linux)' | grep -m 1 ^${GO_TAG_MINOR}) ]; then LATEST_MINOR="true"; fi
          echo "LATEST_MINOR=${LATEST_MINOR}" >> $GITHUB_ENV
          if [ "$GO_VERSION" == $(echo "$GO_WEBSITE" | grep -o 'download" href=".*linux-amd64.tar.gz">' | grep -oP '(?<=\/go)[1-9].*(?=.linux)' | grep -m 1 ^${GO_TAG_MAJOR}) ]; then LATEST_MAJOR="true"; fi
          echo "LATEST_MAJOR=${LATEST_MAJOR}" >> $GITHUB_ENV
          echo "LATEST is ${LATEST:-not true}, LATEST_MINOR is ${LATEST_MINOR:-not true}, LATEST_MAJOR is ${LATEST_MAJOR:-not true}"
          # Build image
          docker build --no-cache --build-arg GO_VERSION=${GO_VERSION} -t ${{ github.sha }} .

      - name: Tag image
        if: ${{ github.ref == format('refs/heads/{0}-{1}', env.BASEIMAGE, env.MODNAME) }}
        run: |
          docker tag ${{ github.sha }} ${ENDPOINT}:${BASEIMAGE}-${MODNAME}
          docker tag ${{ github.sha }} ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG }}
          docker tag ${{ github.sha }} ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG }}-${{ github.sha }}
          docker tag ${{ github.sha }} ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MAJOR }}
          docker tag ${{ github.sha }} ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MAJOR }}-${{ github.sha }}
          docker tag ${{ github.sha }} ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MINOR }}
          docker tag ${{ github.sha }} ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MINOR }}-${{ github.sha }}
          docker tag ${{ github.sha }} ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ github.sha }}
          docker tag ${{ github.sha }} ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}
          docker tag ${{ github.sha }} ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG }}
          docker tag ${{ github.sha }} ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG }}-${{ github.sha }}
          docker tag ${{ github.sha }} ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MAJOR }}
          docker tag ${{ github.sha }} ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MAJOR }}-${{ github.sha }}
          docker tag ${{ github.sha }} ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MINOR }}
          docker tag ${{ github.sha }} ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MINOR }}-${{ github.sha }}
          docker tag ${{ github.sha }} ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ github.sha }}

      - name: Credential check
        if: ${{ github.ref == format('refs/heads/{0}-{1}', env.BASEIMAGE, env.MODNAME) }}
        run: |
          echo "CR_USER=${{ secrets.CR_USER }}" >> $GITHUB_ENV
          echo "CR_PAT=${{ secrets.CR_PAT }}" >> $GITHUB_ENV
          echo "DOCKERUSER=${{ secrets.DOCKERUSER }}" >> $GITHUB_ENV
          echo "DOCKERPASS=${{ secrets.DOCKERPASS }}" >> $GITHUB_ENV
          if [[ "${{ secrets.CR_USER }}" == "" && "${{ secrets.CR_PAT }}" == "" && "${{ secrets.DOCKERUSER }}" == "" && "${{ secrets.DOCKERPASS }}" == "" ]]; then
            echo "::error::Push credential secrets missing."
            echo "::error::You must set either CR_USER & CR_PAT or DOCKERUSER & DOCKERPASS as secrets in your repo settings."
            echo "::error::See https://github.com/linuxserver/docker-mods/blob/master/README.md for more information/instructions."
            exit 1
          fi

      - name: Login to GitHub Container Registry
        if: ${{ github.ref == format('refs/heads/{0}-{1}', env.BASEIMAGE, env.MODNAME) && env.CR_USER && env.CR_PAT }}
        run: |
          echo "${{ secrets.CR_PAT }}" | docker login ghcr.io -u ${{ secrets.CR_USER }} --password-stdin

      - name: Push tags to GitHub Container Registry
        if: ${{ github.ref == format('refs/heads/{0}-{1}', env.BASEIMAGE, env.MODNAME) && env.CR_USER && env.CR_PAT }}
        run: |
          docker push ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG }}-${{ github.sha }}
          docker push ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG }}
          if [ "${{ env.LATEST_MAJOR }}" == "true" ]; then
            docker push ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MAJOR }}-${{ github.sha }}
            docker push ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MAJOR }}
          fi
          if [ "${{ env.LATEST_MINOR }}" == "true" ]; then
            docker push ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MINOR }}-${{ github.sha }}
            docker push ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MINOR }}
          fi
          if [ "${{ env.LATEST }}" == "true" ]; then
            docker push ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ github.sha }}
            docker push ghcr.io/${ENDPOINT}:${BASEIMAGE}-${MODNAME}
          fi

      - name: Login to DockerHub
        if: ${{ github.ref == format('refs/heads/{0}-{1}', env.BASEIMAGE, env.MODNAME) && env.DOCKERUSER && env.DOCKERPASS }}
        run: |
          echo ${{ secrets.DOCKERPASS }} | docker login -u ${{ secrets.DOCKERUSER }} --password-stdin

      - name: Push tags to DockerHub
        if: ${{ github.ref == format('refs/heads/{0}-{1}', env.BASEIMAGE, env.MODNAME) && env.DOCKERUSER && env.DOCKERPASS }}
        run: |
          docker push ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG }}-${{ github.sha }}
          docker push ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG }}
          if [ "${{ env.LATEST_MAJOR }}" == "true" ]; then
            docker push ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MAJOR }}-${{ github.sha }}
            docker push ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MAJOR }}
          fi
          if [ "${{ env.LATEST_MINOR }}" == "true" ]; then
            docker push ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MINOR }}-${{ github.sha }}
            docker push ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ env.GO_TAG_MINOR }}
          fi
          if [ "${{ env.LATEST }}" == "true" ]; then
            docker push ${ENDPOINT}:${BASEIMAGE}-${MODNAME}-${{ github.sha }}
            docker push ${ENDPOINT}:${BASEIMAGE}-${MODNAME}
          fi