---
# Ansible Playbook: Update Production Deployment
# Purpose: Pull new Docker image and update services with zero-downtime
# Usage: Called by Gitea Actions or manual deployment

- name: Update Production Services with New Image
  hosts: production_server
  become: no
  vars:
    image_tag: "{{ image_tag | default('latest') }}"
    git_commit_sha: "{{ git_commit_sha | default('unknown') }}"
    deployment_timestamp: "{{ deployment_timestamp | default(ansible_date_time.iso8601) }}"
    registry_url: "git.michaelschiemer.de:5000"
    image_name: "framework"
    stack_name: "framework"

  tasks:
    - name: Log deployment start
      debug:
        msg: |
          🚀 Starting deployment
          Image: {{ registry_url }}/{{ image_name }}:{{ image_tag }}
          Commit: {{ git_commit_sha }}
          Time: {{ deployment_timestamp }}

    - name: Pull new Docker image
      docker_image:
        name: "{{ registry_url }}/{{ image_name }}"
        tag: "{{ image_tag }}"
        source: pull
        force_source: yes
      register: image_pull
      retries: 3
      delay: 5
      until: image_pull is succeeded

    - name: Tag image as latest locally
      docker_image:
        name: "{{ registry_url }}/{{ image_name }}:{{ image_tag }}"
        repository: "{{ registry_url }}/{{ image_name }}"
        tag: latest
        source: local

    - name: Update web service with rolling update
      docker_swarm_service:
        name: "{{ stack_name }}_web"
        image: "{{ registry_url }}/{{ image_name }}:{{ image_tag }}"
        force_update: yes
        update_config:
          parallelism: 1
          delay: 10s
          failure_action: rollback
          monitor: 30s
          max_failure_ratio: 0.3
        rollback_config:
          parallelism: 1
          delay: 5s
        state: present
      register: web_update

    - name: Update queue-worker service
      docker_swarm_service:
        name: "{{ stack_name }}_queue-worker"
        image: "{{ registry_url }}/{{ image_name }}:{{ image_tag }}"
        force_update: yes
        update_config:
          parallelism: 1
          delay: 10s
          failure_action: rollback
        state: present
      register: worker_update

    - name: Wait for services to stabilize
      pause:
        seconds: 20

    - name: Verify service status
      shell: |
        docker service ps {{ stack_name }}_web --filter "desired-state=running" --format "{{`{{.CurrentState}}`}}" | head -1
      register: service_state
      changed_when: false

    - name: Check if deployment succeeded
      fail:
        msg: "Service deployment failed: {{ service_state.stdout }}"
      when: "'Running' not in service_state.stdout"

    - name: Get running replicas count
      shell: |
        docker service ls --filter "name={{ stack_name }}_web" --format "{{`{{.Replicas}}`}}"
      register: replicas
      changed_when: false

    - name: Record deployment in history
      copy:
        content: |
          Deployment: {{ deployment_timestamp }}
          Image: {{ registry_url }}/{{ image_name }}:{{ image_tag }}
          Commit: {{ git_commit_sha }}
          Status: SUCCESS
          Replicas: {{ replicas.stdout }}
        dest: "/home/deploy/deployments/{{ image_tag }}.log"
        mode: '0644'

    - name: Display deployment summary
      debug:
        msg: |
          ✅ Deployment completed successfully

          Image: {{ registry_url }}/{{ image_name }}:{{ image_tag }}
          Commit: {{ git_commit_sha }}
          Web Service: {{ web_update.changed | ternary('UPDATED', 'NO CHANGE') }}
          Worker Service: {{ worker_update.changed | ternary('UPDATED', 'NO CHANGE') }}
          Replicas: {{ replicas.stdout }}
          Time: {{ deployment_timestamp }}

  handlers:
    - name: Cleanup old images
      shell: docker image prune -af --filter "until=72h"
      changed_when: false