name: Deploy

on:
  workflow_dispatch:
    inputs:
      environment:
        description: 'One of: stage, prod'
        required: true
        default: stage
      bot_tag:
        description: 'tag/digest reference to a UI container build'
        required: false
        default: ':main'
      worker_tag:
        description: 'bucket key to fetch worker from'
        required: false
        default: '' # Empty will try using current main branch hash

jobs:
  deploy_terraform:
    name: Deploy Terraform
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@master

      - uses: hashicorp/setup-terraform@v1.3.2
        with:
          terraform_version: ^0.14.0

      - name: Set up Cloud SDK
        uses: google-github-actions/setup-gcloud@master
        with:
          project_id: ${{ secrets.GCS_PROJECT_ID }}
          service_account_key: ${{ secrets.GCS_TF_KEY }}
          export_default_credentials: true

      - name: Get Google Secrets (they keep them in a box under a tree)
        id: secrets
        uses: google-github-actions/get-secretmanager-secrets@main
        with:
          secrets: |-
            secretJSON:${{ secrets.GCS_PROJECT_ID }}/${{github.event.inputs.environment}}-tfvars

      - name: Pull necessary artifacts
        working-directory: ./terraform
        run: |
          currentHash=${{ github.sha }}
          targetArtifact=${{ github.event.inputs.worker_tag }}
          selected="${targetArtifact:-$currentHash}"

          mkdir worker-dist
          gsutil cp gs://roleypoly-artifacts/backend-worker/$selected/script.js worker-dist/backend-worker.js

      - name: Terraform init
        working-directory: ./terraform
        run: |
          terraform init --backend-config "prefix=${{github.event.inputs.environment}}"

      - name: Write *.auto.tfvars.json files
        working-directory: ./terraform
        run: |
          echo \
            '{"bot_tag": "${{github.event.inputs.bot_tag}}", "api_path_to_worker": "./worker-dist/backend-worker.js"}' \
            | jq . \
            | tee tags.auto.tfvars.json

          echo ${SECRET_TFVARS} > secrets.auto.tfvars.json
        env:
          SECRET_TFVARS: ${{ steps.secrets.outputs.secretJSON }}

      - name: Terraform plan
        working-directory: ./terraform
        run: |
          terraform plan \
            -var-file variables/global.tfvars \
            -var-file variables/${{github.event.inputs.environment}}.tfvars \
            -out=./deployment.tfplan

      - name: Terraform apply
        working-directory: ./terraform
        run: |
          terraform apply \
            -auto-approve \
                deployment.tfplan

      - name: Yell Success at Discord
        if: success()
        run: |
          DATA='{
            "embeds": [
              {
                "title": "Roleypoly Deployment Success",
                "description": "Roleypoly was successfully deployed at '$(date)'",
                "color": 4634182,
                "author": {
                  "name": "Deployment Notification",
                  "url": "https://github.com/roleypoly/roleypoly/actions/runs/${{ github.run_id }}"
                },
                "footer": {
                  "text": "GitHub Actions"
                }
              }
            ]
          }'

          curl -X POST -H "content-type: application/json" --data "$DATA" ${{ secrets.DEPLOYMENT_WEBHOOK_URL }}

      - name: Yell Failure at Discord
        if: failure()
        run: |
          DATA='{
            "embeds": [
              {
                "title": "Roleypoly Deployment Failed",
                "description": "Roleypoly failed to be deployed at '$(date)'",
                "color": 15291219,
                "author": {
                  "name": "Deployment Notification",
                  "url": "https://github.com/roleypoly/roleypoly/actions/runs/${{ github.run_id }}"
                },
                "footer": {
                  "text": "GitHub Actions"
                }
              }
            ]
          }'

          curl -X POST -H "content-type: application/json" --data "$DATA" ${{ secrets.DEPLOYMENT_WEBHOOK_URL }}