---
- name: Deploy Infrastructure Stacks on Production Server
  hosts: production
  become: no
  gather_facts: yes

  vars:
    stacks_base_path: "~/deployment/stacks"
    wait_timeout: 60

  tasks:
    - name: Check if deployment stacks directory exists
      stat:
        path: "{{ stacks_base_path }}"
      register: stacks_dir

    - name: Fail if stacks directory doesn't exist
      fail:
        msg: "Deployment stacks directory not found at {{ stacks_base_path }}"
      when: not stacks_dir.stat.exists

    # Create external networks required by all stacks
    - name: Create traefik-public network
      community.docker.docker_network:
        name: traefik-public
        driver: bridge
        state: present

    - name: Create app-internal network
      community.docker.docker_network:
        name: app-internal
        driver: bridge
        state: present

    # 1. Deploy Traefik (Reverse Proxy & SSL)
    - name: Deploy Traefik stack
      community.docker.docker_compose_v2:
        project_src: "{{ stacks_base_path }}/traefik"
        state: present
        pull: always
      register: traefik_output

    - name: Wait for Traefik to be ready
      wait_for:
        timeout: "{{ wait_timeout }}"
      when: traefik_output.changed

    - name: Check Traefik logs for readiness hint
      shell: docker compose logs traefik 2>&1 | grep -Ei "(configuration loaded|traefik[[:space:]]v|Starting provider|Server configuration loaded)" || true
      args:
        chdir: "{{ stacks_base_path }}/traefik"
      register: traefik_logs
      until: traefik_logs.stdout != ""
      retries: 6
      delay: 10
      changed_when: false
      ignore_errors: yes

    # 2. Deploy PostgreSQL (Database)
    - name: Deploy PostgreSQL stack
      community.docker.docker_compose_v2:
        project_src: "{{ stacks_base_path }}/postgresql"
        state: present
        pull: always
      register: postgres_output

    - name: Wait for PostgreSQL to be ready
      wait_for:
        timeout: "{{ wait_timeout }}"
      when: postgres_output.changed

    - name: Check PostgreSQL logs for readiness
      shell: docker compose logs postgres 2>&1 | grep -Ei "(ready to accept connections|database system is ready)" || true
      args:
        chdir: "{{ stacks_base_path }}/postgresql"
      register: postgres_logs
      until: postgres_logs.stdout != ""
      retries: 6
      delay: 10
      changed_when: false
      ignore_errors: yes

    # 3. Deploy Docker Registry (Private Registry)
    - name: Ensure Registry auth directory exists
      file:
        path: "{{ stacks_base_path }}/registry/auth"
        state: directory
        mode: '0755'
      become: yes

    - name: Create Registry htpasswd file if missing
      shell: |
        if [ ! -f {{ stacks_base_path }}/registry/auth/htpasswd ]; then
          docker run --rm --entrypoint htpasswd httpd:2 -Bbn admin registry-secure-password-2025 > {{ stacks_base_path }}/registry/auth/htpasswd
          chmod 644 {{ stacks_base_path }}/registry/auth/htpasswd
        fi
      args:
        executable: /bin/bash
      become: yes
      changed_when: true
      register: registry_auth_created

    - name: Deploy Docker Registry stack
      community.docker.docker_compose_v2:
        project_src: "{{ stacks_base_path }}/registry"
        state: present
        pull: always
      register: registry_output

    - name: Wait for Docker Registry to be ready
      wait_for:
        timeout: "{{ wait_timeout }}"
      when: registry_output.changed

    - name: Check Registry logs for readiness
      shell: docker compose logs registry 2>&1 | grep -Ei "(listening on|listening at|http server)" || true
      args:
        chdir: "{{ stacks_base_path }}/registry"
      register: registry_logs
      until: registry_logs.stdout != ""
      retries: 6
      delay: 10
      changed_when: false
      ignore_errors: yes

    - name: Verify Registry is accessible
      uri:
        url: "http://127.0.0.1:5000/v2/_catalog"
        user: admin
        password: registry-secure-password-2025
        status_code: 200
        timeout: 5
      register: registry_check
      ignore_errors: yes
      changed_when: false

    - name: Display Registry status
      debug:
        msg: "Registry accessibility: {{ 'SUCCESS' if registry_check.status == 200 else 'FAILED - may need manual check' }}"

    # 4. Deploy Gitea (CRITICAL - Git Server + MySQL + Redis)
    - name: Deploy Gitea stack
      community.docker.docker_compose_v2:
        project_src: "{{ stacks_base_path }}/gitea"
        state: present
        pull: always
      register: gitea_output

    - name: Wait for Gitea to be ready
      wait_for:
        timeout: "{{ wait_timeout }}"
      when: gitea_output.changed

    - name: Check Gitea logs for readiness
      shell: docker compose logs gitea 2>&1 | grep -Ei "(Listen:|Server is running|Starting server)" || true
      args:
        chdir: "{{ stacks_base_path }}/gitea"
      register: gitea_logs
      until: gitea_logs.stdout != ""
      retries: 12
      delay: 10
      changed_when: false
      ignore_errors: yes

    # 5. Deploy Monitoring (Portainer + Grafana + Prometheus)
    - name: Optionally load monitoring secrets from vault
      include_vars:
        file: "{{ playbook_dir }}/../secrets/production.vault.yml"
      no_log: yes
      ignore_errors: yes
      delegate_to: localhost
      become: no

    - name: Set Grafana admin password from vault or generate
      set_fact:
        grafana_admin_password: "{{ vault_grafana_admin_password | default(lookup('password', '/dev/null length=25 chars=ascii_letters,digits')) }}"

    - name: Set Prometheus password from vault or generate
      set_fact:
        prometheus_password: "{{ vault_prometheus_password | default(lookup('password', '/dev/null length=25 chars=ascii_letters,digits')) }}"

    - name: Generate Prometheus BasicAuth hash
      shell: |
        docker run --rm httpd:alpine htpasswd -nbB admin "{{ prometheus_password }}" 2>/dev/null | cut -d ":" -f 2
      register: prometheus_auth_hash
      changed_when: false
      no_log: yes

    - name: Set Prometheus BasicAuth string
      set_fact:
        prometheus_auth: "admin:{{ prometheus_auth_hash.stdout }}"

    - name: Ensure monitoring stack directory exists
      file:
        path: "{{ stacks_base_path }}/monitoring"
        state: directory
        mode: '0755'

    - name: Create monitoring stack .env file
      template:
        src: "{{ playbook_dir }}/../templates/monitoring.env.j2"
        dest: "{{ stacks_base_path }}/monitoring/.env"
        owner: "{{ ansible_user }}"
        group: "{{ ansible_user }}"
        mode: '0600'
      no_log: yes

    - name: Deploy Monitoring stack
      community.docker.docker_compose_v2:
        project_src: "{{ stacks_base_path }}/monitoring"
        state: present
        pull: always
      register: monitoring_output

    - name: Wait for Monitoring to be ready
      wait_for:
        timeout: "{{ wait_timeout }}"
      when: monitoring_output.changed

    # Verification
    - name: List all running containers
      command: >
        docker ps --format 'table {{ "{{" }}.Names{{ "}}" }}\t{{ "{{" }}.Status{{ "}}" }}\t{{ "{{" }}.Ports{{ "}}" }}'
      register: docker_ps_output

    - name: Display running containers
      debug:
        msg: "{{ docker_ps_output.stdout_lines }}"

    - name: Verify Gitea accessibility via HTTPS
      uri:
        url: https://git.michaelschiemer.de
        method: GET
        validate_certs: no
        status_code: 200
        timeout: 10
      register: gitea_http_check
      ignore_errors: yes

    - name: Display Gitea accessibility status
      debug:
        msg: "Gitea HTTPS check: {{ 'SUCCESS' if gitea_http_check.status == 200 else 'FAILED - Status: ' + (gitea_http_check.status|string) }}"

    # 6. Deploy Application Stack
    - name: Optionally load application secrets from vault
      include_vars:
        file: "{{ playbook_dir }}/../secrets/production.vault.yml"
      no_log: yes
      ignore_errors: yes
      delegate_to: localhost
      become: no

    - name: Check if PostgreSQL .env exists
      stat:
        path: "{{ stacks_base_path }}/postgresql/.env"
      register: postgres_env_file
      changed_when: false

    - name: Extract PostgreSQL password from .env file
      shell: "grep '^POSTGRES_PASSWORD=' {{ stacks_base_path }}/postgresql/.env 2>/dev/null | cut -d'=' -f2- || echo ''"
      register: postgres_password_from_file
      changed_when: false
      failed_when: false
      when: postgres_env_file.stat.exists
      no_log: yes

    - name: Set application database password (from file, vault, or generate)
      set_fact:
        app_db_password: "{{ postgres_password_from_file.stdout if (postgres_env_file.stat.exists and postgres_password_from_file.stdout != '') else (vault_db_root_password | default(lookup('password', '/dev/null length=32 chars=ascii_letters,digits,punctuation'))) }}"
      no_log: yes

    - name: Set application redis password from vault or generate
      set_fact:
        app_redis_password: "{{ vault_redis_password | default(lookup('password', '/dev/null length=32 chars=ascii_letters,digits,punctuation')) }}"

    - name: Ensure application stack directory exists
      file:
        path: "{{ stacks_base_path }}/application"
        state: directory
        mode: '0755'

    - name: Create application stack .env file
      template:
        src: "{{ playbook_dir }}/../templates/application.env.j2"
        dest: "{{ stacks_base_path }}/application/.env"
        owner: "{{ ansible_user }}"
        group: "{{ ansible_user }}"
        mode: '0600'
      vars:
        db_password: "{{ app_db_password }}"
        db_user: "{{ db_user | default('postgres') }}"
        db_name: "{{ db_name | default('michaelschiemer') }}"
        redis_password: "{{ app_redis_password }}"
        app_domain: "{{ app_domain | default('michaelschiemer.de') }}"
      no_log: yes

    - name: Deploy Application stack
      community.docker.docker_compose_v2:
        project_src: "{{ stacks_base_path }}/application"
        state: present
        pull: always
      register: application_output

    - name: Wait for Application to be ready
      wait_for:
        timeout: "{{ wait_timeout }}"
      when: application_output.changed

    - name: Wait for application containers to be healthy
      pause:
        seconds: 30
      when: application_output.changed

    - name: Check application container health status
      shell: |
        docker compose -f {{ stacks_base_path }}/application/docker-compose.yml ps --format json | jq -r '.[] | select(.Health != "healthy" and .Health != "" and .Health != "starting") | "\(.Name): \(.Health)"' || echo "All healthy or no health checks"
      args:
        executable: /bin/bash
      register: app_health_status
      changed_when: false
      ignore_errors: yes

    - name: Display application health status
      debug:
        msg: "Application health: {{ app_health_status.stdout if app_health_status.stdout != '' else 'All services healthy or starting' }}"

    - name: Wait for app container to be ready before migration
      wait_for:
        timeout: 60
      when: application_output.changed

    - name: Check if app container is running
      shell: |
        docker compose -f {{ stacks_base_path }}/application/docker-compose.yml ps app | grep -q "Up" || exit 1
      args:
        executable: /bin/bash
      register: app_container_running
      changed_when: false
      failed_when: false
      when: application_output.changed

    - name: Run database migrations
      shell: |
        docker compose -f {{ stacks_base_path }}/application/docker-compose.yml exec -T app php console.php db:migrate
      args:
        executable: /bin/bash
      register: migration_result
      changed_when: true
      failed_when: false
      ignore_errors: yes
      when: application_output.changed and app_container_running.rc == 0

    - name: Display migration result
      debug:
        msg: |
          Migration Result:
          {{ migration_result.stdout if migration_result.rc == 0 else 'Migration may have failed - check logs with: docker compose -f ' + stacks_base_path + '/application/docker-compose.yml logs app' }}
      when: application_output.changed

    - name: Verify application accessibility via HTTPS
      uri:
        url: "https://{{ app_domain | default('michaelschiemer.de') }}/health"
        method: GET
        validate_certs: no
        status_code: [200, 404, 502, 503]
        timeout: 10
      register: app_health_check
      ignore_errors: yes
      when: application_output.changed

    - name: Display application accessibility status
      debug:
        msg: "Application health check: {{ 'SUCCESS (HTTP ' + (app_health_check.status|string) + ')' if app_health_check.status == 200 else 'FAILED or not ready yet (HTTP ' + (app_health_check.status|string) + ')' }}"
      when: application_output.changed

    - name: Summary
      debug:
        msg:
          - "=== Infrastructure Deployment Complete ==="
          - "Traefik: {{ 'Deployed' if traefik_output.changed else 'Already running' }}"
          - "PostgreSQL: {{ 'Deployed' if postgres_output.changed else 'Already running' }}"
          - "Docker Registry: {{ 'Deployed' if registry_output.changed else 'Already running' }}"
          - "Gitea: {{ 'Deployed' if gitea_output.changed else 'Already running' }}"
          - "Monitoring: {{ 'Deployed' if monitoring_output.changed else 'Already running' }}"
          - "Application: {{ 'Deployed' if application_output.changed else 'Already running' }}"
          - ""
          - "Next Steps:"
          - "1. Access Gitea at: https://git.michaelschiemer.de"
          - "2. Complete Gitea setup wizard if first-time deployment"
          - "3. Navigate to Admin > Actions > Runners to get registration token"
          - "4. Continue with Phase 1 - Gitea Runner Setup"
          - "5. Access Application at: https://{{ app_domain | default('michaelschiemer.de') }}"