---
# Consolidated Gitea Diagnosis Playbook
# Consolidates: diagnose-gitea-timeouts.yml, diagnose-gitea-timeout-deep.yml,
#                diagnose-gitea-timeout-live.yml, diagnose-gitea-timeouts-complete.yml,
#                comprehensive-gitea-diagnosis.yml
#
# Usage:
#   # Basic diagnosis (default)
#   ansible-playbook -i inventory/production.yml playbooks/diagnose/gitea.yml
#
#   # Deep diagnosis (includes resource checks, multiple connection tests)
#   ansible-playbook -i inventory/production.yml playbooks/diagnose/gitea.yml --tags deep
#
#   # Live diagnosis (monitors during request)
#   ansible-playbook -i inventory/production.yml playbooks/diagnose/gitea.yml --tags live
#
#   # Complete diagnosis (all checks)
#   ansible-playbook -i inventory/production.yml playbooks/diagnose/gitea.yml --tags complete

- name: Diagnose Gitea Issues
  hosts: production
  gather_facts: yes
  become: no
  vars:
    gitea_stack_path: "{{ stacks_base_path }}/gitea"
    traefik_stack_path: "{{ stacks_base_path }}/traefik"
    gitea_url: "https://{{ gitea_domain }}"
    gitea_container_name: "gitea"
    traefik_container_name: "traefik"

  tasks:
    # ========================================
    # BASIC DIAGNOSIS (always runs)
    # ========================================
    - name: Display diagnostic plan
      ansible.builtin.debug:
        msg: |
          ================================================================================
          GITEA DIAGNOSIS
          ================================================================================
          
          Running diagnosis with tags: {{ ansible_run_tags | default(['all']) }}
          
          Basic checks (always):
          - Container status
          - Health endpoints
          - Network connectivity
          - Service discovery
          
          Deep checks (--tags deep):
          - Resource usage
          - Multiple connection tests
          - Log analysis
          
          Live checks (--tags live):
          - Real-time monitoring during request
          
          Complete checks (--tags complete):
          - All checks including app.ini, ServersTransport, etc.
          
          ================================================================================

    - name: Check Gitea container status
      ansible.builtin.shell: |
        cd {{ gitea_stack_path }}
        docker compose ps {{ gitea_container_name }}
      register: gitea_status
      changed_when: false

    - name: Check Traefik container status
      ansible.builtin.shell: |
        cd {{ traefik_stack_path }}
        docker compose ps {{ traefik_container_name }}
      register: traefik_status
      changed_when: false

    - name: Check Gitea health endpoint (direct from container)
      ansible.builtin.shell: |
        cd {{ gitea_stack_path }}
        docker compose exec -T {{ gitea_container_name }} curl -f http://localhost:3000/api/healthz 2>&1 || echo "HEALTH_CHECK_FAILED"
      register: gitea_health_direct
      changed_when: false
      failed_when: false

    - name: Check Gitea health endpoint (via Traefik)
      ansible.builtin.uri:
        url: "{{ gitea_url }}/api/healthz"
        method: GET
        status_code: [200]
        validate_certs: false
        timeout: 10
      register: gitea_health_traefik
      failed_when: false
      changed_when: false

    - name: Check if Gitea is in traefik-public network
      ansible.builtin.shell: |
        docker network inspect traefik-public --format '{{ '{{' }}range .Containers{{ '}}' }}{{ '{{' }}.Name{{ '}}' }} {{ '{{' }}end{{ '}}' }}' 2>/dev/null | grep -q {{ gitea_container_name }} && echo "YES" || echo "NO"
      register: gitea_in_traefik_network
      changed_when: false
      failed_when: false

    - name: Test connection from Traefik to Gitea
      ansible.builtin.shell: |
        cd {{ traefik_stack_path }}
        docker compose exec -T {{ traefik_container_name }} wget -qO- --timeout=5 http://{{ gitea_container_name }}:3000/api/healthz 2>&1 || echo "CONNECTION_FAILED"
      register: traefik_gitea_connection
      changed_when: false
      failed_when: false

    - name: Check Traefik service discovery for Gitea
      ansible.builtin.shell: |
        cd {{ traefik_stack_path }}
        docker compose exec -T {{ traefik_container_name }} traefik show providers docker 2>/dev/null | grep -i "gitea" || echo "NOT_FOUND"
      register: traefik_gitea_service
      changed_when: false
      failed_when: false

    # ========================================
    # DEEP DIAGNOSIS (--tags deep)
    # ========================================
    - name: Check Gitea container resources (CPU/Memory)
      ansible.builtin.shell: |
        docker stats {{ gitea_container_name }} --no-stream --format 'CPU: {{ '{{' }}.CPUPerc{{ '}}' }} | Memory: {{ '{{' }}.MemUsage{{ '}}' }}' 2>/dev/null || echo "Could not get stats"
      register: gitea_resources
      changed_when: false
      failed_when: false
      tags:
        - deep
        - complete

    - name: Check Traefik container resources (CPU/Memory)
      ansible.builtin.shell: |
        docker stats {{ traefik_container_name }} --no-stream --format 'CPU: {{ '{{' }}.CPUPerc{{ '}}' }} | Memory: {{ '{{' }}.MemUsage{{ '}}' }}' 2>/dev/null || echo "Could not get stats"
      register: traefik_resources
      changed_when: false
      failed_when: false
      tags:
        - deep
        - complete

    - name: Test Gitea direct connection (multiple attempts)
      ansible.builtin.shell: |
        for i in {1..5}; do
          echo "=== Attempt $i ==="
          cd {{ gitea_stack_path }}
          timeout 5 docker compose exec -T {{ gitea_container_name }} curl -f http://localhost:3000/api/healthz 2>&1 || echo "FAILED"
          sleep 1
        done
      register: gitea_direct_tests
      changed_when: false
      tags:
        - deep
        - complete

    - name: Test Gitea via Traefik (multiple attempts)
      ansible.builtin.shell: |
        for i in {1..5}; do
          echo "=== Attempt $i ==="
          timeout 10 curl -k -s -o /dev/null -w "%{http_code}" {{ gitea_url }}/api/healthz 2>&1 || echo "TIMEOUT"
          sleep 2
        done
      register: gitea_traefik_tests
      changed_when: false
      tags:
        - deep
        - complete

    - name: Check Gitea logs for errors/timeouts
      ansible.builtin.shell: |
        cd {{ gitea_stack_path }}
        docker compose logs {{ gitea_container_name }} --tail=50 2>&1 | grep -iE "error|timeout|failed|panic|fatal" | tail -20 || echo "No errors in recent logs"
      register: gitea_errors
      changed_when: false
      failed_when: false
      tags:
        - deep
        - complete

    - name: Check Traefik logs for Gitea-related errors
      ansible.builtin.shell: |
        cd {{ traefik_stack_path }}
        docker compose logs {{ traefik_container_name }} --tail=50 2>&1 | grep -iE "gitea|git\.michaelschiemer\.de|timeout|error" | tail -20 || echo "No Gitea-related errors in Traefik logs"
      register: traefik_gitea_errors
      changed_when: false
      failed_when: false
      tags:
        - deep
        - complete

    # ========================================
    # COMPLETE DIAGNOSIS (--tags complete)
    # ========================================
    - name: Test Gitea internal port (127.0.0.1:3000)
      ansible.builtin.shell: |
        docker exec {{ gitea_container_name }} curl -sS -I http://127.0.0.1:3000/ 2>&1 | head -5
      register: gitea_internal_test
      changed_when: false
      failed_when: false
      tags:
        - complete

    - name: Test Traefik to Gitea via Docker DNS (gitea:3000)
      ansible.builtin.shell: |
        docker exec {{ traefik_container_name }} sh -lc 'apk add --no-cache curl >/dev/null 2>&1 || true; curl -sS -I http://gitea:3000/ 2>&1' | head -10
      register: traefik_gitea_dns_test
      changed_when: false
      failed_when: false
      tags:
        - complete

    - name: Check Traefik logs for 504 errors
      ansible.builtin.shell: |
        docker logs {{ traefik_container_name }} --tail=100 2>&1 | grep -i "504\|timeout" | tail -20 || echo "No 504/timeout errors found"
      register: traefik_504_logs
      changed_when: false
      failed_when: false
      tags:
        - complete

    - name: Check Gitea Traefik labels
      ansible.builtin.shell: |
        docker inspect {{ gitea_container_name }} --format '{{ '{{' }}json .Config.Labels{{ '}}' }}' 2>/dev/null | python3 -m json.tool | grep -E "traefik" || echo "No Traefik labels found"
      register: gitea_labels
      changed_when: false
      failed_when: false
      tags:
        - complete

    - name: Verify service port is 3000
      ansible.builtin.shell: |
        docker inspect {{ gitea_container_name }} --format '{{ '{{' }}json .Config.Labels{{ '}}' }}' 2>/dev/null | python3 -c "import sys, json; labels = json.load(sys.stdin); print('server.port:', labels.get('traefik.http.services.gitea.loadbalancer.server.port', 'NOT SET'))"
      register: gitea_service_port
      changed_when: false
      failed_when: false
      tags:
        - complete

    - name: Check ServersTransport configuration
      ansible.builtin.shell: |
        docker inspect {{ gitea_container_name }} --format '{{ '{{' }}json .Config.Labels{{ '}}' }}' 2>/dev/null | python3 -c "
        import sys, json
        labels = json.load(sys.stdin)
        transport = labels.get('traefik.http.services.gitea.loadbalancer.serversTransport', '')
        if transport:
            print('ServersTransport:', transport)
            print('dialtimeout:', labels.get('traefik.http.serverstransports.gitea-transport.forwardingtimeouts.dialtimeout', 'NOT SET'))
            print('responseheadertimeout:', labels.get('traefik.http.serverstransports.gitea-transport.forwardingtimeouts.responseheadertimeout', 'NOT SET'))
            print('idleconntimeout:', labels.get('traefik.http.serverstransports.gitea-transport.forwardingtimeouts.idleconntimeout', 'NOT SET'))
            print('maxidleconnsperhost:', labels.get('traefik.http.serverstransports.gitea-transport.maxidleconnsperhost', 'NOT SET'))
        else:
            print('ServersTransport: NOT CONFIGURED')
        "
      register: gitea_timeout_config
      changed_when: false
      failed_when: false
      tags:
        - complete

    - name: Check Gitea app.ini proxy settings
      ansible.builtin.shell: |
        cd {{ gitea_stack_path }}
        docker compose exec -T {{ gitea_container_name }} cat /data/gitea/conf/app.ini 2>/dev/null | grep -E "PROXY_TRUSTED_PROXIES|LOCAL_ROOT_URL|COOKIE_SECURE|SAME_SITE" || echo "Proxy settings not found in app.ini"
      register: gitea_proxy_settings
      changed_when: false
      failed_when: false
      tags:
        - complete

    - name: Check if Traefik can resolve Gitea hostname
      ansible.builtin.shell: |
        docker exec {{ traefik_container_name }} getent hosts {{ gitea_container_name }} || echo "DNS resolution failed"
      register: traefik_dns_resolution
      changed_when: false
      failed_when: false
      tags:
        - complete

    - name: Check Docker networks for Gitea and Traefik
      ansible.builtin.shell: |
        docker inspect {{ gitea_container_name }} --format '{{ '{{' }}json .NetworkSettings.Networks{{ '}}' }}' | python3 -c "import sys, json; data=json.load(sys.stdin); print('Gitea networks:', list(data.keys()))"
        docker inspect {{ traefik_container_name }} --format '{{ '{{' }}json .NetworkSettings.Networks{{ '}}' }}' | python3 -c "import sys, json; data=json.load(sys.stdin); print('Traefik networks:', list(data.keys()))"
      register: docker_networks_check
      changed_when: false
      failed_when: false
      tags:
        - complete

    - name: Test long-running endpoint from external
      ansible.builtin.uri:
        url: "{{ gitea_url }}/user/events"
        method: GET
        status_code: [200, 504]
        validate_certs: false
        timeout: 60
      register: long_running_endpoint_test
      changed_when: false
      failed_when: false
      tags:
        - complete

    - name: Check Redis connection from Gitea
      ansible.builtin.shell: |
        cd {{ gitea_stack_path }}
        docker compose exec -T {{ gitea_container_name }} sh -c "redis-cli -h redis -a {{ vault_gitea_redis_password | default('gitea_redis_password') }} ping 2>&1" || echo "REDIS_CONNECTION_FAILED"
      register: gitea_redis_connection
      changed_when: false
      failed_when: false
      tags:
        - complete

    - name: Check PostgreSQL connection from Gitea
      ansible.builtin.shell: |
        cd {{ gitea_stack_path }}
        docker compose exec -T {{ gitea_container_name }} sh -c "pg_isready -h postgres -p 5432 -U gitea 2>&1" || echo "POSTGRES_CONNECTION_FAILED"
      register: gitea_postgres_connection
      changed_when: false
      failed_when: false
      tags:
        - complete

    # ========================================
    # SUMMARY
    # ========================================
    - name: Summary
      ansible.builtin.debug:
        msg: |
          ================================================================================
          GITEA DIAGNOSIS SUMMARY
          ================================================================================
          
          Container Status:
          - Gitea: {{ gitea_status.stdout | regex_replace('.*(Up|Down|Restarting).*', '\\1') | default('UNKNOWN') }}
          - Traefik: {{ traefik_status.stdout | regex_replace('.*(Up|Down|Restarting).*', '\\1') | default('UNKNOWN') }}
          
          Health Checks:
          - Gitea (direct): {% if 'HEALTH_CHECK_FAILED' not in gitea_health_direct.stdout %}✅{% else %}❌{% endif %}
          - Gitea (via Traefik): {% if gitea_health_traefik.status == 200 %}✅{% else %}❌ (Status: {{ gitea_health_traefik.status | default('TIMEOUT') }}){% endif %}
          
          Network:
          - Gitea in traefik-public: {% if gitea_in_traefik_network.stdout == 'YES' %}✅{% else %}❌{% endif %}
          - Traefik → Gitea: {% if 'CONNECTION_FAILED' not in traefik_gitea_connection.stdout %}✅{% else %}❌{% endif %}
          
          Service Discovery:
          - Traefik finds Gitea: {% if 'NOT_FOUND' not in traefik_gitea_service.stdout %}✅{% else %}❌{% endif %}
          
          {% if 'deep' in ansible_run_tags or 'complete' in ansible_run_tags %}
          Resources:
          - Gitea: {{ gitea_resources.stdout | default('N/A') }}
          - Traefik: {{ traefik_resources.stdout | default('N/A') }}
          
          Connection Tests:
          - Direct (5 attempts): {{ gitea_direct_tests.stdout | default('N/A') }}
          - Via Traefik (5 attempts): {{ gitea_traefik_tests.stdout | default('N/A') }}
          
          Error Logs:
          - Gitea: {{ gitea_errors.stdout | default('No errors') }}
          - Traefik: {{ traefik_gitea_errors.stdout | default('No errors') }}
          {% endif %}
          
          {% if 'complete' in ansible_run_tags %}
          Configuration:
          - Service Port: {{ gitea_service_port.stdout | default('N/A') }}
          - ServersTransport: {{ gitea_timeout_config.stdout | default('N/A') }}
          - Proxy Settings: {{ gitea_proxy_settings.stdout | default('N/A') }}
          - DNS Resolution: {{ traefik_dns_resolution.stdout | default('N/A') }}
          - Networks: {{ docker_networks_check.stdout | default('N/A') }}
          
          Long-Running Endpoint:
          - Status: {{ long_running_endpoint_test.status | default('N/A') }}
          
          Dependencies:
          - Redis: {% if 'REDIS_CONNECTION_FAILED' not in gitea_redis_connection.stdout %}✅{% else %}❌{% endif %}
          - PostgreSQL: {% if 'POSTGRES_CONNECTION_FAILED' not in gitea_postgres_connection.stdout %}✅{% else %}❌{% endif %}
          {% endif %}
          
          ================================================================================
          RECOMMENDATIONS
          ================================================================================
          
          {% if gitea_health_traefik.status != 200 %}
          ❌ Gitea is not reachable via Traefik
          → Run: ansible-playbook -i inventory/production.yml playbooks/manage/gitea.yml --tags restart
          {% endif %}
          
          {% if gitea_in_traefik_network.stdout != 'YES' %}
          ❌ Gitea is not in traefik-public network
          → Restart Gitea container to update network membership
          {% endif %}
          
          {% if 'CONNECTION_FAILED' in traefik_gitea_connection.stdout %}
          ❌ Traefik cannot reach Gitea
          → Restart both containers
          {% endif %}
          
          {% if 'NOT_FOUND' in traefik_gitea_service.stdout %}
          ❌ Gitea not found in Traefik service discovery
          → Restart Traefik to refresh service discovery
          {% endif %}
          
          ================================================================================