# SPDX-FileCopyrightText: 2024 MDAD Team and contributors
#
# SPDX-License-Identifier: AGPL-3.0-or-later

---

# This will throw a Permission Denied error if already mounted using fuse
- name: Check Synapse media store path
  ansible.builtin.stat:
    path: "{{ matrix_synapse_media_store_path }}"
  register: local_path_media_store_stat
  ignore_errors: true

# This is separate and conditional, to ensure we don't execute it
# if the path already exists or we failed to check, because it's mounted using fuse.
- name: Ensure Synapse media store path exists
  ansible.builtin.file:
    path: "{{ matrix_synapse_media_store_path }}"
    state: directory
    mode: 0750
    owner: "{{ matrix_synapse_uid }}"
    group: "{{ matrix_synapse_gid }}"
  when: "not local_path_media_store_stat.failed and not local_path_media_store_stat.stat.exists"

- when: "matrix_synapse_container_image_self_build | bool"
  block:
    - name: Ensure Synapse repository is present on self-build
      ansible.builtin.git:
        repo: "{{ matrix_synapse_container_image_self_build_repo }}"
        dest: "{{ matrix_synapse_docker_src_files_path }}"
        version: "{{ matrix_synapse_docker_image.split(':')[1] }}"
        force: "yes"
      become: true
      become_user: "{{ matrix_synapse_username }}"
      register: matrix_synapse_git_pull_results

    - name: Check if Synapse Docker image exists
      ansible.builtin.command: "{{ devture_systemd_docker_base_host_command_docker }} images --quiet --filter 'reference={{ matrix_synapse_docker_image }}'"
      register: matrix_synapse_docker_image_check_result
      changed_when: false

    # Invoking the `docker build` command here, instead of calling the `docker_image` Ansible module,
    # because the latter does not support BuildKit.
    # See: https://github.com/ansible-collections/community.general/issues/514
    - name: Ensure Synapse Docker image is built
      ansible.builtin.shell:
        chdir: "{{ matrix_synapse_docker_src_files_path }}"
        cmd: |
          {{ devture_systemd_docker_base_host_command_docker }} build \
          -t "{{ matrix_synapse_docker_image }}" \
          -f docker/Dockerfile \
          .
      environment:
        DOCKER_BUILDKIT: 1
      changed_when: true
      when: "matrix_synapse_git_pull_results.changed | bool or matrix_synapse_docker_image_check_result.stdout == ''"

- name: Ensure Synapse Docker image is pulled
  community.docker.docker_image:
    name: "{{ matrix_synapse_docker_image }}"
    source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
    force_source: "{{ matrix_synapse_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
    force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_synapse_docker_image_force_pull }}"
  when: "not matrix_synapse_container_image_self_build"
  register: result
  retries: "{{ devture_playbook_help_container_retries_count }}"
  delay: "{{ devture_playbook_help_container_retries_delay }}"
  until: result is not failed

- when: "matrix_synapse_container_image_customizations_enabled | bool"
  block:
    - name: Ensure customizations Dockerfile is created
      ansible.builtin.template:
        src: "{{ role_path }}/templates/synapse/customizations/Dockerfile.j2"
        dest: "{{ matrix_synapse_customized_docker_src_files_path }}/Dockerfile"
        owner: "{{ matrix_synapse_uid }}"
        group: "{{ matrix_synapse_gid }}"
        mode: 0640
      register: matrix_synapse_container_image_customizations_dockerfile_result

    - name: Ensure customized Docker image for Synapse is built
      community.docker.docker_image:
        name: "{{ matrix_synapse_docker_image_customized }}"
        source: build
        force_source: "{{ matrix_synapse_container_image_customizations_dockerfile_result.changed or matrix_synapse_docker_image_customized_force_source }}"
        build:
          dockerfile: Dockerfile
          path: "{{ matrix_synapse_customized_docker_src_files_path }}"
          nocache: "{{ matrix_synapse_docker_image_customized_build_nocache }}"

# We do this so that the signing key would get generated.
#
# This will also generate a default homeserver.yaml configuration file and a log configuration file.
# We don't care about those configuration files, as we replace them with our own anyway (see below).
#
# We don't use the `docker_container` module, because using it with `cap_drop` requires
# a very recent docker-py version, which is not available for a lot of people yet.
- name: Generate initial Synapse config and signing key
  ansible.builtin.command:
    cmd: |
      {{ devture_systemd_docker_base_host_command_docker }} run
      --rm
      --name=matrix-config
      --user={{ matrix_synapse_uid }}:{{ matrix_synapse_gid }}
      --cap-drop=ALL
      --mount type=bind,src={{ matrix_synapse_config_dir_path }},dst=/data
      -e SYNAPSE_CONFIG_PATH=/data/homeserver.yaml
      -e SYNAPSE_SERVER_NAME={{ matrix_server_fqn_matrix }}
      -e SYNAPSE_REPORT_STATS=no
      {{ matrix_synapse_docker_image }}
      generate
    creates: "{{ matrix_synapse_config_dir_path }}/{{ matrix_server_fqn_matrix }}.signing.key"

- name: Ensure Synapse homeserver config installed
  ansible.builtin.copy:
    content: "{{ matrix_synapse_configuration | to_nice_yaml(indent=2, width=999999) }}"
    dest: "{{ matrix_synapse_config_dir_path }}/homeserver.yaml"
    mode: 0644
    owner: "{{ matrix_synapse_uid }}"
    group: "{{ matrix_synapse_gid }}"

- name: Ensure Synapse container network is created
  community.general.docker_network:
    enable_ipv6: "{{ devture_systemd_docker_base_ipv6_enabled }}"
    name: "{{ matrix_synapse_container_network }}"
    driver: bridge
    driver_options: "{{ devture_systemd_docker_base_container_networks_driver_options }}"

- name: Ensure Synapse support files installed
  ansible.builtin.template:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    mode: "{{ item.mode }}"
  with_items:
    - src: "{{ matrix_synapse_template_synapse_log }}"
      dest: "{{ matrix_synapse_config_dir_path }}/{{ matrix_server_fqn_matrix }}.log.config"
      mode: '0644'
    - src: "{{ role_path }}/templates/synapse/bin/register-user.j2"
      dest: "{{ matrix_synapse_bin_path }}/register-user"
      mode: '0755'
    - src: "{{ role_path }}/templates/synapse/labels.j2"
      dest: "{{ matrix_synapse_base_path }}/labels"
      mode: '0644'
    - src: "{{ role_path }}/templates/synapse/systemd/matrix-synapse.service.j2"
      dest: "{{ devture_systemd_docker_base_systemd_path }}/matrix-synapse.service"
      mode: '0644'

- name: Generate sample prometheus.yml for external scraping
  ansible.builtin.template:
    src: "{{ role_path }}/templates/synapse/prometheus/external_prometheus.yml.example.j2"
    dest: "{{ matrix_synapse_base_path }}/external_prometheus.yml.example"
    owner: "{{ matrix_synapse_uid }}"
    group: "{{ matrix_synapse_gid }}"
    mode: 0644
  when: matrix_synapse_metrics_proxying_enabled | bool