---

- name: Fail if playbook called incorrectly
  fail: msg="The `local_path_media_store` variable needs to be provided to this playbook, via --extra-vars"
  when: "local_path_media_store is not defined or local_path_media_store.startswith('<')"

- name: Check if the provided media store directory exists
  stat: path="{{ local_path_media_store }}"
  delegate_to: 127.0.0.1
  become: false
  register: local_path_media_store_stat

- name: Fail if provided media store directory doesn't exist on the local machine
  fail: msg="{{ local_path_media_store }} cannot be found on the local machine"
  when: "not local_path_media_store_stat.stat.exists or not local_path_media_store_stat.stat.isdir"

- name: Check if media store contains local_content
  stat: path="{{ local_path_media_store }}/local_content"
  delegate_to: 127.0.0.1
  become: false
  register: local_path_media_store_local_content_stat

- name: Check if media store contains remote_content
  stat: path="{{ local_path_media_store }}/remote_content"
  delegate_to: 127.0.0.1
  become: false
  register: local_path_media_store_remote_content_stat

- name: Fail if media store directory doesn't look okay (lacking remote and local content)
  fail: msg="{{ local_path_media_store }} contains neither local_content nor remote_content. It's most likely a mistake and is not a media store directory."
  when: "not local_path_media_store_local_content_stat.stat.exists and not local_path_media_store_remote_content_stat.stat.exists"

- name: Ensure matrix-synapse is stopped
  service: name=matrix-synapse state=stopped daemon_reload=yes
  register: stopping_result

- name: Ensure provided media store directory is copied to the server
  synchronize:
    src: "{{ local_path_media_store }}/"
    dest: "{{ matrix_synapse_media_store_path }}"
    delete: yes
    # It's wasteful to preserve owner/group now. We chown below anyway.
    owner: no
    group: no
    # The default of times=yes does not work when s3fs is used.
    times: "{{ False if matrix_s3_media_store_enabled else True }}"
    perms: "{{ False if matrix_s3_media_store_enabled else True }}"

# This is for the generic case and fails for remote file systems,
# because the base path (matrix_synapse_media_store_path) is a mount point.
- name: Ensure media store permissions are correct (generic case)
  file:
    path: "{{ matrix_synapse_media_store_path }}"
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_username }}"
    recurse: yes
  when: "not matrix_s3_media_store_enabled"

- name: Determine media store subdirectories
  find: paths="{{ local_path_media_store }}" file_type=directory
  delegate_to: 127.0.0.1
  become: false
  register: media_store_directories_result
  when: "matrix_s3_media_store_enabled"

# This is the s3fs special case. We chown the subdirectories one by one,
# without touching the base directory.
- name: Ensure media store permissions are correct (s3fs)
  file:
    path: "{{ matrix_synapse_media_store_path }}/{{ item.path|basename }}"
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_username }}"
    recurse: yes
  with_items: "{{ media_store_directories_result.files }}"
  when: "matrix_s3_media_store_enabled"

- name: Ensure Matrix Synapse is started (if it previously was)
  service: name="{{ item }}" state=started daemon_reload=yes
  when: stopping_result.changed
  with_items:
    - matrix-synapse
    - matrix-nginx-proxy