---
- name: Prepare the isolated rootless Atlas Gitea target
  tags: [atlas, gitea]
  when: atlas_manage_gitea | bool
  block:
    - name: Require the existing Atlas application-data dataset
      ansible.builtin.assert:
        that:
          - atlas_manage_storage | bool
          - atlas_gitea_dataset == atlas_zfs_pool ~ '/services/data/gitea'
          - atlas_gitea_mountpoint == atlas_app_data_mountpoint ~ '/gitea'
          - atlas_gitea_uid | int != atlas_admin_uid | int
          - atlas_gitea_uid | int != atlas_immich_uid | int
          - atlas_gitea_gid | int != atlas_admin_gid | int
          - atlas_gitea_gid | int != atlas_immich_gid | int
          - atlas_gitea_staging_bind_address == '127.0.0.1'
        fail_msg: >-
          Rootless Gitea preparation requires Atlas storage, an isolated service
          identity and dataset, and loopback-only staging ports.

    - name: Create the dedicated Gitea group
      ansible.builtin.group:
        name: "{{ atlas_gitea_group }}"
        gid: "{{ atlas_gitea_gid }}"
        system: true
        state: present

    - name: Create the non-login Gitea service account
      ansible.builtin.user:
        name: "{{ atlas_gitea_username }}"
        uid: "{{ atlas_gitea_uid }}"
        group: "{{ atlas_gitea_group }}"
        home: "{{ atlas_gitea_home }}"
        shell: /sbin/nologin
        create_home: true
        system: true
        state: present

    - name: Restrict the Gitea service home
      ansible.builtin.file:
        path: "{{ atlas_gitea_home }}"
        state: directory
        owner: "{{ atlas_gitea_username }}"
        group: "{{ atlas_gitea_group }}"
        mode: "0700"

    - name: Reserve dedicated rootless UID and GID ranges for Gitea
      ansible.builtin.lineinfile:
        path: "{{ item }}"
        regexp: '^{{ atlas_gitea_username }}:'
        line: >-
          {{ atlas_gitea_username }}:{{ atlas_gitea_subid_start }}:{{ atlas_gitea_subid_count }}
        create: false
        mode: "0644"
      loop:
        - /etc/subuid
        - /etc/subgid

    - name: Enable POSIX ACLs only on the service-namespace parents
      community.general.zfs:
        name: "{{ item }}"
        state: present
        extra_zfs_properties:
          acltype: posix
      loop:
        - "{{ atlas_zfs_pool }}/{{ atlas_zfs_dataset_services }}"
        - "{{ atlas_zfs_pool }}/{{ atlas_zfs_dataset_app_data }}"

    - name: Permit Gitea to traverse only the application-data parents
      ansible.posix.acl:
        path: "{{ item }}"
        entity: "{{ atlas_gitea_username }}"
        etype: user
        permissions: x
        state: present
      loop:
        - "{{ atlas_services_mountpoint }}"
        - "{{ atlas_app_data_mountpoint }}"

    - name: Create the dedicated Gitea ZFS dataset
      community.general.zfs:
        name: "{{ atlas_gitea_dataset }}"
        state: present
        extra_zfs_properties:
          compression: zstd
          mountpoint: "{{ atlas_gitea_mountpoint }}"

    - name: Restrict the Gitea dataset and create rootless volume paths
      ansible.builtin.file:
        path: "{{ item }}"
        state: directory
        owner: "{{ atlas_gitea_username }}"
        group: "{{ atlas_gitea_group }}"
        mode: "0700"
      loop:
        - "{{ atlas_gitea_mountpoint }}"
        - "{{ atlas_gitea_mountpoint }}/data"
        - "{{ atlas_gitea_mountpoint }}/config"
        - "{{ atlas_gitea_home }}/.config"
        - "{{ atlas_gitea_home }}/.config/containers"
        - "{{ atlas_gitea_quadlet_dir }}"

    - name: Enable lingering for the dedicated rootless account
      ansible.builtin.command:
        argv:
          - loginctl
          - enable-linger
          - "{{ atlas_gitea_username }}"
        creates: "/var/lib/systemd/linger/{{ atlas_gitea_username }}"

    - name: Start the dedicated rootless user manager
      ansible.builtin.systemd:
        name: "user@{{ atlas_gitea_uid }}.service"
        state: started
      when: not ansible_check_mode

    - name: Render the disabled rootless Gitea Quadlet
      ansible.builtin.template:
        src: atlas-gitea.container.j2
        dest: "{{ atlas_gitea_quadlet_dir }}/atlas-gitea.container"
        owner: "{{ atlas_gitea_username }}"
        group: "{{ atlas_gitea_group }}"
        mode: "0644"

    - name: Reload the rootless Gitea user manager without starting Gitea
      become_user: "{{ atlas_gitea_username }}"
      ansible.builtin.systemd:
        scope: user
        daemon_reload: true
      environment:
        XDG_RUNTIME_DIR: "/run/user/{{ atlas_gitea_uid }}"
        DBUS_SESSION_BUS_ADDRESS: "unix:path=/run/user/{{ atlas_gitea_uid }}/bus"
      when: not ansible_check_mode