---

- name: Ensure Matrix Synapse paths exists
  file:
    path: "{{ item }}"
    state: directory
    mode: 0750
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_username }}"
  with_items:
    - "{{ matrix_synapse_config_dir_path }}"
    - "{{ matrix_synapse_run_path }}"
    - "{{ matrix_synapse_storage_path }}"
    # We handle matrix_synapse_media_store_path below, not here,
    # because if it's using S3fs and it's already mounted (from before),
    # trying to chown/chmod it here will cause trouble.

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

# 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 Matrix media store path exists
  file:
    path: "{{ matrix_synapse_media_store_path }}"
    state: directory
    mode: 0750
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_username }}"
  when: "not local_path_media_store_stat.failed and not local_path_media_store_stat.stat.exists"

- name: Ensure Matrix Docker image is pulled
  docker_image:
    name: "{{ docker_matrix_image }}"

- name: Check if a Matrix Synapse configuration exists
  stat:
    path: "{{ matrix_synapse_config_dir_path }}/homeserver.yaml"
  register: matrix_synapse_config_stat

- name: Generate initial Matrix config
  docker_container:
    name: matrix-config
    image: "{{ docker_matrix_image }}"
    detach: no
    cleanup: yes
    command: generate
    env:
      SYNAPSE_CONFIG_PATH: "/data/homeserver.yaml"
      SYNAPSE_SERVER_NAME: "{{ hostname_matrix }}"
      SYNAPSE_REPORT_STATS: "no"
    user: "{{ matrix_user_uid }}:{{ matrix_user_gid }}"
    volumes:
      - "{{ matrix_synapse_config_dir_path }}:/data"
  when: "not matrix_synapse_config_stat.stat.exists"

- name: Augment Matrix log config
  lineinfile: "dest={{ matrix_synapse_config_dir_path }}/{{ hostname_matrix }}.log.config"
  args:
    regexp: "{{ item.regexp }}"
    line: '{{ item.line }}'
    backrefs: '{{ item.backrefs }}'
  with_items:
    - {"regexp": '^(\s+)filename:', "line": '\1filename: /matrix-run/homeserver.log', backrefs: yes}
    - {"regexp": '^(\s+)maxBytes:', "line": '\1maxBytes: {{ matrix_max_log_file_size_mb * 1024 * 1024 }}', backrefs: yes}
    - {"regexp": '^(\s+)backupCount:', "line": '\1backupCount: {{ matrix_max_log_files_count }}', backrefs: yes}

- name: Augment Matrix config
  lineinfile: "dest={{ matrix_synapse_config_dir_path }}/homeserver.yaml"
  args:
    regexp: "{{ item.regexp }}"
    line: '{{ item.line }}'
  with_items:
    - {"regexp": "^log_file:", "line": 'log_file: "/matrix-run/homeserver.log"'}
    - {"regexp": "^uploads_path:", "line": 'uploads_path: "/matrix-run/uploads"'}
    - {"regexp": "^server_name:", "line": 'server_name: "{{ hostname_identity }}"'}
    - {"regexp": "^turn_allow_guests:", "line": 'turn_allow_guests: False'}
    - {"regexp": "^url_preview_enabled:", "line": 'url_preview_enabled: True'}
    - {"regexp": "^max_upload_size:", "line": 'max_upload_size: "{{ matrix_max_upload_size_mb }}M"'}
    - {"regexp": "^media_store_path:", "line": 'media_store_path: "/matrix-storage/media-store"'}

- name: Augment Matrix config (configure Macaroon secret)
  lineinfile: "dest={{ matrix_synapse_config_dir_path }}/homeserver.yaml"
  args:
    regexp: "{{ item.regexp }}"
    line: '{{ item.line }}'
  with_items:
    - {"regexp": "^macaroon_secret_key:", "line": 'macaroon_secret_key: "{{ matrix_synapse_macaroon_secret_key }}"'}
  when: "matrix_synapse_macaroon_secret_key is not none"

- name: Augment Matrix config (specify URL previews blacklist)
  lineinfile: "dest={{ matrix_synapse_config_dir_path }}/homeserver.yaml"
  args:
    regexp: "^url_preview_ip_range_blacklist:"
    line: 'url_preview_ip_range_blacklist: ["127.0.0.0/8", "10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16", "100.64.0.0/10", "169.254.0.0/16"]'
    insertafter: '^# url_preview_ip_range_blacklist:$'

# We only wish to do this for the 8008 port and not for the 8448 port
# (2nd instance of `x_forwarded` found in the config)
- name: Augment Matrix config (mark 8008 plain traffic as forwarded)
  replace: "dest={{ matrix_synapse_config_dir_path }}/homeserver.yaml"
  args:
    regexp: "8008((?:.|\n)*)x_forwarded(.*)"
    replace: '8008\g<1>x_forwarded: true'

- name: Augment Matrix config (change database from SQLite to Postgres)
  lineinfile:
    dest: "{{ matrix_synapse_config_dir_path }}/homeserver.yaml"
    regexp: '(.*)name: "sqlite3"'
    line: '\1name: "psycopg2"'
    backrefs: yes

- name: Augment Matrix config (set the Postgres connection parameters)
  replace:
    dest: "{{ matrix_synapse_config_dir_path }}/homeserver.yaml"
    regexp: '(.*)name: "psycopg2"((?:.|\n)*?)\n\n'
    replace: '\1name: "psycopg2"\n\1args:\n\1\1user: "{{ matrix_postgres_connection_username }}"\n\1\1password: "{{ matrix_postgres_connection_password }}"\n\1\1database: "{{ matrix_postgres_db_name }}"\n\1\1host: "{{ matrix_postgres_connection_hostname }}"\n\1\1cp_min: 5\n\1\1cp_max: 10\n\n'

- name: Augment Matrix config (configure TURN)
  lineinfile: "dest={{ matrix_synapse_config_dir_path }}/homeserver.yaml"
  args:
    regexp: "{{ item.regexp }}"
    line: '{{ item.line }}'
  with_items:
    - {"regexp": "^turn_uris:", "line": 'turn_uris: ["turn:{{ hostname_matrix }}:3478?transport=udp", "turn:{{ hostname_matrix }}:3478?transport=tcp"]'}
    - {"regexp": "^turn_shared_secret:", "line": 'turn_shared_secret: "{{ matrix_coturn_turn_static_auth_secret }}"'}

- name: Allow access to Matrix ports in firewalld
  firewalld:
    port: "{{ item }}"
    state: enabled
    immediate: yes
    permanent: yes
  with_items:
    - '8448/tcp' # Matrix federation
  when: ansible_os_family == 'RedHat'

- name: Ensure matrix-synapse.service installed
  template:
    src: "{{ role_path }}/templates/systemd/matrix-synapse.service.j2"
    dest: "/etc/systemd/system/matrix-synapse.service"
    mode: 0644

- name: Ensure matrix-synapse-register-user script created
  template:
    src: "{{ role_path }}/templates/usr-local-bin/matrix-synapse-register-user.j2"
    dest: "/usr/local/bin/matrix-synapse-register-user"
    mode: 0750