---
- name: Deploy Uptime Kuma on GCP and Configure Non-Interactively
  hosts: all
  
  vars:
    # GCP Configuration
    gcp_project: "your-gcp-project-id"
    gcp_region: "us-central1"
    service_name: "uptime-kuma"
    ar_repo_name: "dockerhub"
    data_bucket_name: "{{ gcp_project }}-uptime-kuma-data"

    # Uptime Kuma Credentials & Target
    kuma_admin_user: "admin"
    kuma_admin_pass: "ChangeMeImmediately123!"
    target_monitor_name: "Target Web App"
    target_monitor_url: "https://example.com"

  tasks:
    # -------------------------------------------------------------
    # 1. Local Prerequisites
    # -------------------------------------------------------------
    - name: Ensure uptime-kuma-api Python library is installed locally
      ansible.builtin.shell:
        executable: /bin/bash
        cmd: |
          apt update
          apt install python3-pip -y
          python3 -m pip install --user uptime-kuma-api --break-system-packages
          python3 -m pip install uptime-kuma-api --break-system-packages
      register: pip_install
      changed_when: "'Successfully installed' in pip_install.stdout"

    # -------------------------------------------------------------
    # 2. Enable APIs, Storage Bucket and Docker Hub Mirror
    # -------------------------------------------------------------
    - name: Enable required GCP APIs, create data bucket and Docker Hub remote repo
      ansible.builtin.shell:
        executable: /bin/bash
        cmd: |
          if [ -f '/home/builder/google-cloud-sdk/path.bash.inc' ]; then . '/home/builder/google-cloud-sdk/path.bash.inc'; fi
          set -e
          gcloud services enable run.googleapis.com artifactregistry.googleapis.com storage.googleapis.com \
            --project={{ gcp_project }}

          if ! gcloud storage buckets describe gs://{{ data_bucket_name }} --project={{ gcp_project }} >/dev/null 2>&1; then
            gcloud storage buckets create gs://{{ data_bucket_name }} \
              --project={{ gcp_project }} --location={{ gcp_region }}
            echo BUCKET_CREATED
          fi

          if ! gcloud artifacts repositories describe {{ ar_repo_name }} \
               --location={{ gcp_region }} --project={{ gcp_project }} >/dev/null 2>&1; then
            gcloud artifacts repositories create {{ ar_repo_name }} \
              --repository-format=docker --mode=remote-repository \
              --remote-docker-repo=DOCKER-HUB \
              --location={{ gcp_region }} --project={{ gcp_project }}
            echo REPO_CREATED
          fi
      register: prereq_output
      changed_when: "'CREATED' in prereq_output.stdout"

    # -------------------------------------------------------------
    # 3. Deploy to Cloud Run (idempotent: deploy updates in place)
    # -------------------------------------------------------------
    # Kuma uses SQLite and websockets: one always-on instance, CPU always allocated.
    - name: Deploy Uptime Kuma to Cloud Run
      ansible.builtin.shell:
        executable: /bin/bash
        cmd: |
          if [ -f '/home/builder/google-cloud-sdk/path.bash.inc' ]; then . '/home/builder/google-cloud-sdk/path.bash.inc'; fi
          gcloud run deploy {{ service_name }} \
            --project={{ gcp_project }} \
            --region={{ gcp_region }} \
            --image={{ gcp_region }}-docker.pkg.dev/{{ gcp_project }}/{{ ar_repo_name }}/louislam/uptime-kuma:1 \
            --port=3001 \
            --cpu=1 --memory=1Gi \
            --min-instances=1 --max-instances=1 \
            --no-cpu-throttling \
            --execution-environment=gen2 \
            --allow-unauthenticated \
            --add-volume=name=kuma-data,type=cloud-storage,bucket={{ data_bucket_name }} \
            --add-volume-mount=volume=kuma-data,mount-path=/app/data
      register: deploy_output

    # -------------------------------------------------------------
    # 4. Fetch Service URL and Wait for Readiness
    # -------------------------------------------------------------
    - name: Fetch Cloud Run service URL
      ansible.builtin.shell:
        executable: /bin/bash
        cmd: |
          if [ -f '/home/builder/google-cloud-sdk/path.bash.inc' ]; then . '/home/builder/google-cloud-sdk/path.bash.inc'; fi
          gcloud run services describe {{ service_name }} \
            --region={{ gcp_region }} \
            --project={{ gcp_project }} \
            --format="value(status.url)"
      register: kuma_url
      changed_when: false

    - name: Display Uptime Kuma URL
      ansible.builtin.debug:
        msg: "Uptime Kuma is running at: {{ kuma_url.stdout.strip() }}"

    - name: Wait for Uptime Kuma to respond with HTTP 200
      ansible.builtin.uri:
        url: "{{ kuma_url.stdout.strip() }}"
        status_code: 200
      register: readiness
      until: readiness.status == 200
      retries: 30
      delay: 6

    # -------------------------------------------------------------
    # 5. Non-Interactive Configuration via API
    # -------------------------------------------------------------
    - name: Perform headless setup and add monitor
      ansible.builtin.shell:
        cmd: |
          python3 -c "
          import sys
          from uptime_kuma_api import UptimeKumaApi, MonitorType

          api = UptimeKumaApi('{{ kuma_url.stdout.strip() }}')

          # 1. Initial admin account creation if not yet initialized
          if api.need_setup():
              api.setup('{{ kuma_admin_user }}', '{{ kuma_admin_pass }}')
              print('ADMIN_CREATED')

          # 2. Login
          api.login('{{ kuma_admin_user }}', '{{ kuma_admin_pass }}')

          # 3. Add monitor idempotently
          current_monitors = [m['name'] for m in api.get_monitors()]
          if '{{ target_monitor_name }}' not in current_monitors:
              api.add_monitor(
                  type=MonitorType.HTTP,
                  name='{{ target_monitor_name }}',
                  url='{{ target_monitor_url }}',
                  interval=60
              )
              print('MONITOR_ADDED')
          else:
              print('MONITOR_ALREADY_EXISTS')

          api.disconnect()
          "
        executable: /bin/bash
      register: setup_output
      changed_when: "'MONITOR_ADDED' in setup_output.stdout"

    - name: Show setup summary
      ansible.builtin.debug:
        msg:
          - "Setup Status: {{ setup_output.stdout.strip() }}"
          - "Access UI at: {{ kuma_url.stdout.strip() }}"
          - "Username: {{ kuma_admin_user }}"