---
# ============================================
# PostgreSQL Installation (vm-postgres uniquement)
# ============================================
- name: Installation et configuration de PostgreSQL
  hosts: postgres
  become: true
  gather_facts: true

  tasks:
      - name: Installer les dépendances système
        apt:
            name:
                - wget
                - gnupg2
                - lsb-release
                - ca-certificates
                - apt-transport-https
                - acl # Nécessaire pour become_user
            state: present
            update_cache: yes

      - name: Ajouter la clé GPG du dépôt PostgreSQL
        apt_key:
            url: https://www.postgresql.org/media/keys/ACCC4CF8.asc
            state: present

      - name: Ajouter le dépôt PostgreSQL
        apt_repository:
            repo: "deb http://apt.postgresql.org/pub/repos/apt {{ ansible_distribution_release }}-pgdg main"
            state: present
            filename: pgdg

      - name: Installer PostgreSQL {{ postgres_version }}
        apt:
            name:
                - postgresql-{{ postgres_version }}
                - postgresql-contrib-{{ postgres_version }}
                - python3-psycopg2
            state: present
            update_cache: yes

      - name: S'assurer que PostgreSQL est démarré
        systemd:
            name: postgresql
            state: started
            enabled: yes

      - name: Définir le mot de passe du user postgres
        postgresql_user:
            name: postgres
            password: "{{ postgres_password }}"
            state: present
        become_user: postgres

      - name: Créer les bases de données PostgreSQL
        postgresql_db:
            name: "{{ item.name }}"
            owner: postgres
            state: present
        loop: "{{ postgres_databases }}"
        become_user: postgres

      - name: Configurer pg_hba.conf pour autoriser le backend
        blockinfile:
            path: "/etc/postgresql/{{ postgres_version }}/main/pg_hba.conf"
            block: |
                # Connexions locales
                local   all     postgres                                peer
                host    all     postgres     127.0.0.1/32               scram-sha-256
                # Connexions backend LAN
                host    all     postgres     192.168.1.0/24             scram-sha-256
            marker: "# {mark} ANSIBLE MANAGED BLOCK"
        notify: Redémarrer PostgreSQL
        tags:
            - reload

      - name: Configurer PostgreSQL pour écouter sur toutes les interfaces
        lineinfile:
            path: "/etc/postgresql/{{ postgres_version }}/main/postgresql.conf"
            regexp: "^#?listen_addresses"
            line: "listen_addresses = '*'"
            state: present
        notify: Redémarrer PostgreSQL
        tags:
            - reload

  handlers:
      - name: Redémarrer PostgreSQL
        systemd:
            name: postgresql
            state: restarted
        tags:
            - reload

# ============================================
# Redis Installation (vm-redis uniquement)
# ============================================
- name: Installation et configuration de Redis
  hosts: redis
  become: true
  gather_facts: true

  tasks:
      - name: Installer Redis
        apt:
            name:
                - redis-server
                - python3-redis
            state: present
            update_cache: yes

      - name: Créer le répertoire de backup Redis
        file:
            path: /var/lib/redis/backup
            state: directory
            owner: redis
            group: redis
            mode: "0755"

      - name: Configurer Redis - bind address (accepter connexions réseau)
        lineinfile:
            path: /etc/redis/redis.conf
            regexp: "^bind"
            line: "bind 127.0.0.1 192.168.1.62"
            state: present
        notify: Redémarrer Redis

      - name: Configurer Redis - port
        lineinfile:
            path: /etc/redis/redis.conf
            regexp: "^port"
            line: "port {{ redis_port }}"
            state: present
        notify: Redémarrer Redis

      - name: Configurer Redis - maxmemory
        lineinfile:
            path: /etc/redis/redis.conf
            regexp: "^# ?maxmemory"
            line: "maxmemory {{ redis_maxmemory }}"
            state: present
        notify: Redémarrer Redis

      - name: Configurer Redis - maxmemory-policy
        lineinfile:
            path: /etc/redis/redis.conf
            regexp: "^# ?maxmemory-policy"
            line: "maxmemory-policy {{ redis_maxmemory_policy }}"
            state: present
        notify: Redémarrer Redis

      - name: Configurer Redis - requirepass
        lineinfile:
            path: /etc/redis/redis.conf
            regexp: "^# ?requirepass"
            line: "requirepass {{ redis_password }}"
            state: present
        notify: Redémarrer Redis

      - name: Activer AOF (Append Only File) pour Redis
        lineinfile:
            path: /etc/redis/redis.conf
            regexp: "^appendonly"
            line: "appendonly yes"
            state: present
        notify: Redémarrer Redis

      - name: Configurer la fréquence de sync AOF
        lineinfile:
            path: /etc/redis/redis.conf
            regexp: "^# ?appendfsync"
            line: "appendfsync everysec"
            state: present
        notify: Redémarrer Redis

      - name: Activer la persistance RDB (snapshots)
        blockinfile:
            path: /etc/redis/redis.conf
            block: |
                save 900 1
                save 300 10
                save 60 10000
            marker: "# {mark} ANSIBLE MANAGED RDB PERSISTENCE"
        notify: Redémarrer Redis

      - name: Configurer le nom du fichier AOF
        lineinfile:
            path: /etc/redis/redis.conf
            regexp: "^appendfilename"
            line: 'appendfilename "appendonly.aof"'
            state: present
        notify: Redémarrer Redis

      - name: Désactiver le mode protégé Redis
        lineinfile:
            path: /etc/redis/redis.conf
            regexp: "^protected-mode"
            line: "protected-mode no"
            state: present
        notify: Redémarrer Redis

      - name: Configurer le répertoire de travail Redis
        lineinfile:
            path: /etc/redis/redis.conf
            regexp: "^dir"
            line: "dir /var/lib/redis"
            state: present
        notify: Redémarrer Redis

      - name: Définir le niveau de log
        lineinfile:
            path: /etc/redis/redis.conf
            regexp: "^loglevel"
            line: "loglevel notice"
            state: present
        notify: Redémarrer Redis

      - name: S'assurer que Redis est démarré
        systemd:
            name: redis-server
            state: started
            enabled: yes

  handlers:
      - name: Redémarrer Redis
        systemd:
            name: redis-server
            state: restarted