---
# Docker Swarm Deployment Playbook
# This playbook initializes Docker Swarm cluster and deploys services

- name: Initialize Docker Swarm Manager
  hosts: swarm_managers
  become: yes
  gather_facts: yes
  
  tasks:
    - name: Check if Docker Swarm is already initialized
      command: docker info --format "{{ '{{' }}.Swarm.LocalNodeState{{ '}}' }}"
      register: swarm_status_check
      changed_when: false
      failed_when: false
    
    - name: Initialize Docker Swarm
      command: docker swarm init --advertise-addr 192.168.56.10
      register: swarm_init_result
      changed_when: swarm_init_result.rc == 0
      failed_when: swarm_init_result.rc not in [0, 1]
      when: swarm_status_check.stdout != "active"
    
    - name: Get worker join token
      command: docker swarm join-token worker
      register: worker_token_result
      changed_when: false
    
    - name: Extract worker join command
      set_fact:
        worker_join_token: "{{ worker_token_result.stdout_lines[2] }}"
    
    - name: Display worker join command
      debug:
        msg: "Worker join command: {{ worker_join_token }}"
    
    - name: Get manager join token
      command: docker swarm join-token manager
      register: manager_token_result
      changed_when: false
    
    - name: Display manager join command
      debug:
        msg: "Manager join command: {{ manager_token_result.stdout_lines[2] }}"
    
    - name: Copy Docker Compose stack file
      copy:
        src: docker-stack.yml
        dest: /home/vagrant/docker-stack.yml
        mode: '0644'
    
    - name: Deploy Docker Swarm stack
      command: docker stack deploy -c docker-stack.yml swarm-stack
      register: stack_result
      changed_when: stack_result.rc == 0
      failed_when: stack_result.rc not in [0, 1]
    
    - name: Check Docker Swarm status
      command: docker node ls
      register: swarm_status
      changed_when: false
    
    - name: Display Swarm status
      debug:
        msg: "{{ swarm_status.stdout_lines }}"
    
    - name: Check Docker stack services
      command: docker stack services swarm-stack
      register: services_status
      changed_when: false
    
    - name: Display stack services status
      debug:
        msg: "{{ services_status.stdout_lines }}"

- name: Join Docker Swarm Workers
  hosts: swarm_workers
  become: yes
  gather_facts: no
  
  tasks:
    - name: Join Docker Swarm as worker
      command: "{{ hostvars[groups['swarm_managers'][0]]['worker_join_token'] | replace('10.0.2.15:2377', '192.168.56.10:2377') }}"
      register: join_result
      changed_when: join_result.rc == 0
      failed_when: join_result.rc not in [0, 1]
    
    - name: Verify node joined successfully
      command: docker node ls
      register: node_status
      changed_when: false
      ignore_errors: yes
    
    - name: Display node status
      debug:
        msg: "{{ node_status.stdout_lines if node_status.rc == 0 else 'Node not accessible' }}"

- name: Verify Docker Swarm Cluster
  hosts: swarm_managers
  become: yes
  gather_facts: no
  
  tasks:
    - name: Wait for all nodes to be ready
      command: docker node ls
      register: nodes_check
      until: nodes_check.stdout_lines | length >= 5  # Header + 4 nodes
      retries: 10
      delay: 5
      changed_when: false
    
    - name: Check all nodes are active
      command: docker node ls --format "{{ '{{' }}.Status{{ '}}' }}"
      register: node_statuses
      changed_when: false
    
    - name: Verify all nodes are ready
      assert:
        that:
          - "'Ready' in node_statuses.stdout"
          - "'Active' in node_statuses.stdout"
        fail_msg: "Not all nodes are ready and active"
    
    - name: Check stack service health
      command: docker stack services swarm-stack --format "table {{.Name}}\t{{.Replicas}}"
      register: service_replicas
      changed_when: false
    
    - name: Display stack service replicas
      debug:
        msg: "{{ service_replicas.stdout_lines }}"
    
    - name: Create cluster info file
      copy:
        content: |
          Docker Swarm Cluster Information
          ================================
          Manager: {{ groups['swarm_managers'][0] }}
          Workers: {{ groups['swarm_workers'] | join(', ') }}
          Total Nodes: {{ groups['swarm_nodes'] | length }}
          
          Services Deployed:
          - Portainer (Management UI): http://{{ ansible_default_ipv4.address }}:9000
          - Traefik Dashboard: http://{{ ansible_default_ipv4.address }}:8080
          - Web Application: http://{{ ansible_default_ipv4.address }}
          
          Network: swarm-network (overlay)
          Created: {{ ansible_date_time.iso8601 }}
        dest: /opt/swarm-cluster-info.txt
        mode: '0644'
    
    - name: Display cluster information
      command: cat /opt/swarm-cluster-info.txt
      register: cluster_info
      changed_when: false
    
    - name: Show cluster information
      debug:
        msg: "{{ cluster_info.stdout_lines }}"