---
# Production Container Deployment Playbook
# Deploys pre-built container images for Custom PHP Framework

- name: Deploy Custom PHP Framework Application
  hosts: web_servers
  become: true
  gather_facts: true
  
  vars:
    app_path: "/var/www/html"
    backup_path: "/var/www/backups"
    image_tag: "{{ IMAGE_TAG | default('latest') }}"
    domain_name: "{{ DOMAIN_NAME | default('michaelschiemer.de') }}"
    backup_enabled: "{{ BACKUP_ENABLED | default(true) | bool }}"
    backup_retention_days: "{{ BACKUP_RETENTION_DAYS | default(30) }}"
    cdn_update: "{{ CDN_UPDATE | default(false) | bool }}"
    # Pfade für Templates/Compose relativ zum Playbook-Verzeichnis
    compose_base_src: "{{ playbook_dir }}/../../../docker-compose.yml"
    compose_overlay_src: "{{ playbook_dir }}/../../applications/docker-compose.{{ environment }}.yml"
    env_template_src: "{{ playbook_dir }}/../../applications/environments/.env.{{ environment }}.template"
    # Compose-Projektname: Standardmäßig Verzeichnisname von app_path (z. B. 'html')
    compose_project: "{{ compose_project_name | default(app_path | basename) }}"

  pre_tasks:
    - name: Verify deployment requirements
      assert:
        that:
          - app_path is defined
          - domain_name is defined
          - image_tag is defined
          - image_tag != 'latest' or environment != 'production'
        fail_msg: "Production deployment requires specific image tag (not 'latest')"
      tags: always

    - name: Create required directories
      ansible.builtin.file:
        path: "{{ item }}"
        state: directory
        owner: deploy
        group: deploy
        mode: '0755'
      loop:
        - "{{ app_path }}"
        - "{{ backup_path }}"
        - /var/log/applications
      tags: always

    - name: Store current image tag for rollback
      ansible.builtin.shell: |
        if [ -f {{ app_path }}/.env.{{ environment }} ]; then
          grep '^IMAGE_TAG=' {{ app_path }}/.env.{{ environment }} | cut -d'=' -f2 > {{ app_path }}/.last_release || echo 'none'
        fi
      ignore_errors: true
      tags: backup

  tasks:
    - name: Check for existing deployment
      ansible.builtin.stat:
        path: "{{ app_path }}/docker-compose.yml"
      register: existing_deployment
      tags: deploy

    - name: Render environment file from template
      ansible.builtin.template:
        src: "{{ env_template_src }}"
        dest: "{{ app_path }}/.env.{{ environment }}"
        owner: deploy
        group: deploy
        mode: '0600'
        backup: true
      vars:
        IMAGE_TAG: "{{ image_tag }}"
        DOMAIN_NAME: "{{ domain_name }}"
      no_log: true
      tags: deploy

    - name: Copy Docker Compose files (base + overlay)
      ansible.builtin.copy:
        src: "{{ item.src }}"
        dest: "{{ app_path }}/{{ item.dest }}"
        owner: deploy
        group: deploy
        mode: '0644'
      loop:
        - { src: "{{ compose_base_src }}", dest: "docker-compose.yml" }
        - { src: "{{ compose_overlay_src }}", dest: "docker-compose.{{ environment }}.yml" }
      tags: deploy

    - name: Stop existing services gracefully if present
      community.docker.docker_compose_v2:
        project_src: "{{ app_path }}"
        files:
          - docker-compose.yml
          - "docker-compose.{{ environment }}.yml"
        env_files:
          - ".env.{{ environment }}"
        state: stopped
        timeout: 60
      when: existing_deployment.stat.exists
      ignore_errors: true
      tags: deploy

    - name: Create storage volumes with proper permissions
      ansible.builtin.file:
        path: "{{ app_path }}/{{ item }}"
        state: directory
        owner: www-data
        group: www-data
        mode: '0775'
      loop:
        - storage
        - storage/logs
        - storage/cache
        - var
        - var/logs
      tags: deploy

    - name: Deploy application with Docker Compose v2
      community.docker.docker_compose_v2:
        project_src: "{{ app_path }}"
        files:
          - docker-compose.yml
          - "docker-compose.{{ environment }}.yml"
        env_files:
          - ".env.{{ environment }}"
        pull: true
        build: false
        state: present
        recreate: smart
        remove_orphans: true
        timeout: 300
      tags: deploy

    - name: Wait for PHP container to be healthy (label-based)
      community.docker.docker_container_info:
        filters:
          label:
            - "com.docker.compose.service=php"
            - "com.docker.compose.project={{ compose_project }}"
      register: php_info
      retries: 20
      delay: 10
      until: php_info.containers is defined and
             (php_info.containers | length) > 0 and
             (
               (php_info.containers[0].State.Health is defined and php_info.containers[0].State.Health.Status == "healthy")
               or
               php_info.containers[0].State.Status == "running"
             )
      tags: deploy

    - name: Run database migrations
      community.docker.docker_container_exec:
        container: "{{ php_info.containers[0].Id }}"
        command: php console.php db:migrate --force
        chdir: /var/www/html
      tags: deploy

    - name: Clear application caches
      community.docker.docker_container_exec:
        container: "{{ php_info.containers[0].Id }}"
        command: "php console.php {{ item }}"
        chdir: /var/www/html
      loop:
        - cache:clear
        - view:clear
      ignore_errors: true
      tags: deploy

    - name: Wait for application to be ready
      ansible.builtin.uri:
        url: "https://{{ domain_name }}/health"
        method: GET
        status_code: 200
        timeout: 30
        headers:
          User-Agent: "Mozilla/5.0 (Ansible Health Check)"
        validate_certs: true
      register: http_health
      retries: 15
      delay: 10
      until: http_health.status == 200
      tags: deploy

    - name: Store successful deployment tag
      ansible.builtin.copy:
        content: "{{ image_tag }}"
        dest: "{{ app_path }}/.last_successful_release"
        owner: deploy
        group: deploy
        mode: '0644'
      tags: deploy

  post_tasks:
    - name: Clean up old backups
      ansible.builtin.find:
        paths: "{{ backup_path }}"
        age: "{{ backup_retention_days }}d"
        file_type: directory
      register: old_backups
      when: backup_enabled
      tags: cleanup

    - name: Remove old backup directories
      ansible.builtin.file:
        path: "{{ item.path }}"
        state: absent
      loop: "{{ old_backups.files }}"
      when: backup_enabled and old_backups.files is defined
      tags: cleanup

    - name: Import CDN update playbook if enabled
      import_playbook: update-cdn.yml
      when: cdn_update | default(false) | bool
      tags: cdn

    - name: Deployment success notification
      ansible.builtin.debug:
        msg:
          - "Application deployment completed successfully"
          - "Image Tag: {{ image_tag }}"
          - "Environment: {{ environment }}"
          - "Domain: {{ domain_name }}"
          - "CDN Updated: {{ cdn_update }}"
      tags: always