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+# https://seafile.readthedocs.io/en/latest/config/seafile/seadav/#seafdav-configuration
+# https://manual.seafile.com/deploy/using_sqlite/
+# https://manual.seafile.com/deploy/using_sqlite/#setup-in-non-interactive-way
+# https://manual.seafile.com/deploy/deploy_with_nginx
+# https://manual.seafile.com/deploy/deploy_seahub_at_non-root_domain/
+# https://seafile.readthedocs.io/en/latest/installation/seafile/#enable-seafile-server-autostart-systemd
+---
+
+- name: 'install required apt packages'
+  apt:
+    name:
+      - 'libmemcached-dev'
+      - 'memcached'
+      - 'pwgen'
+      - 'python3'
+      - 'python3-setuptools'
+      - 'python3-pip'
+      - 'sqlite3'
+      - 'libopenjp2-7'
+      - 'libtiff5'
+    state: 'present'
+    update_cache: true
+
+- name: 'install required pip packages'
+  become_user: '{{ seafile_user_grp }}'
+  pip:
+    name:
+      - 'captcha'
+      - 'django==2.2.*'
+      - 'django-pylibmc'
+      - 'django-simple-captcha'
+      - 'future'
+      - 'jinja2'
+      - 'Pillow'
+      - 'psd-tools'
+      - 'pylibmc'
+      - 'pexpect'
+    state: 'present'
+
+- name: 'create seafile installation and data directories'
+  file:
+    path: '{{ item.path }}'
+    state: 'directory'
+    owner: '{{ item.owner }}'
+    group: '{{ item.group }}'
+    mode: '{{ item.mode }}'
+  loop:
+    - {path: '{{ seafile_install_dir }}/installed', owner: '{{ seafile_user_grp }}', group: '{{ seafile_user_grp }}', mode: '775'}
+    - {path: '{{ seafile_data_dir }}', owner: '{{ ansible_user }}', group: '{{ ansible_user }}', mode: '755'}
+
+- name: 'download seafile package to local folder'
+  become_user: '{{ seafile_user_grp }}'
+  get_url:
+    url: '{{ seafile_download_url }}'
+    dest: '{{ seafile_install_dir }}/installed/seafile-{{ seafile_version }}.tar.gz'
+    mode: '644'
+  register: '_download_archive'
+  until: '_download_archive is succeeded'
+  retries: 5
+  delay: 2
+  check_mode: false
+
+- name: 'unpack seafile binaries'
+  become_user: '{{ seafile_user_grp }}'
+  unarchive:
+    src: '{{ seafile_install_dir }}/installed/seafile-{{ seafile_version }}.tar.gz'
+    dest: '{{ seafile_install_dir }}'
+    remote_src: true
+    creates: '{{ seafile_install_dir }}/seafile-server-{{ seafile_version }}'
+  check_mode: false
+
+# this hack is needed for this version only
+- name: 'Remove old PIL dir'
+  become_user: '{{ seafile_user_grp }}'
+  file:
+    path: '{{ seafile_install_dir }}/seafile-server-{{ seafile_version }}/seahub/thirdpart/PIL'
+    state: 'absent'
+  when: '"buster" in seafile_download_url'
+
+# RUN NON-INTERACTIVELY
+- name: 'Run setup script'  # noqa no-changed-when command-instead-of-shell
+  become_user: '{{ seafile_user_grp }}'
+  shell: './setup-seafile.sh auto -n "{{ inventory_hostname }}" -i "0.0.0.0"'
+  args:
+    executable: '/bin/bash'
+    chdir: '{{ seafile_install_dir }}/seafile-server-{{ seafile_version }}'
+    creates: '{{ seafile_install_dir }}/conf/ccnet.conf'
+
+- name: 'Get stats of the data object'
+  stat:
+    path: '{{ seafile_install_dir }}/seafile-data'
+  register: sym
+
+- block:
+    - name: 'Ensure Seafile is not running yet'  # noqa command-instead-of-shell
+      become_user: '{{ seafile_user_grp }}'
+      shell: './seafile.sh stop'
+      args:
+        executable: '/bin/bash'
+        chdir: '{{ seafile_install_dir }}/seafile-server-{{ seafile_version }}'
+
+    - name: 'Move old data to new data'   # noqa risky-file-permissions
+      become_user: '{{ seafile_user_grp }}'
+      copy:
+        src: '{{ seafile_install_dir }}/seafile-data/'
+        dest: '{{ seafile_data_dir }}'
+        remote_src: true
+
+    - name: 'Delete old data dir'
+      become_user: '{{ seafile_user_grp }}'
+      file:
+        path: '{{ seafile_install_dir }}/seafile-data'
+        state: 'absent'
+
+    - name: 'Create symlink to new data dir'
+      become_user: '{{ seafile_user_grp }}'
+      file:
+        src: '{{ seafile_data_dir }}'
+        dest: '{{ seafile_install_dir }}/seafile-data'
+        state: 'link'
+  when: sym.stat.islnk is defined and (not sym.stat.islnk)  # => first time setup
+
+- name: 'Copy conf files'
+  become_user: '{{ seafile_user_grp }}'
+  template:
+    src: '{{ item }}.j2'
+    dest: '{{ seafile_install_dir }}/conf/{{ item }}'
+    mode: '644'
+  loop:
+    - 'ccnet.conf'
+    - 'seafdav.conf'
+  notify:
+    - 'seafile restart'
+    - 'seahub restart'
+
+- name: 'Update gunicorn conf'
+  lineinfile:
+    path: '{{ seafile_install_dir }}/conf/gunicorn.conf.py'
+    regexp: '^bind'
+    line: 'bind = "127.0.0.1:8000"'
+  notify:
+    - 'seahub restart'
+
+# some stuff needed for nginx based install
+- name: 'Update seahub_settings.py'
+  become_user: '{{ seafile_user_grp }}'
+  blockinfile:
+    path: '{{ seafile_install_dir }}/conf/seahub_settings.py'
+    insertafter: '^SECRET_KEY'
+    block: |
+      DEBUG = False
+      FILE_SERVER_ROOT = 'https://{{ seafile_domain }}/seafhttp'
+      SERVE_STATIC = False
+      MEDIA_URL = '/seafmedia/'
+      COMPRESS_URL = MEDIA_URL
+      STATIC_URL = MEDIA_URL + 'assets/'
+      SITE_ROOT = '/files/'
+      LOGIN_URL = '/files/accounts/login/'
+  notify:
+    - 'seahub restart'
+
+- block:
+    - name: 'Run Seafile start script'  # noqa command-instead-of-shell
+      become_user: '{{ seafile_user_grp }}'
+      shell: './seafile.sh start'
+      args:
+        executable: '/bin/bash'
+        chdir: '{{ seafile_install_dir }}/seafile-server-{{ seafile_version }}'
+
+    - name: 'Init Seahub with a user'
+      become_user: '{{ seafile_user_grp }}'
+      expect:
+        command: './seahub.sh start'
+        chdir: '{{ seafile_install_dir }}/seafile-server-{{ seafile_version }}'
+        responses:
+          (?i)email: "{{ seafile_user_email }}"
+          (?i)password: "{{ seafile_user_password }}"
+
+  when: sym.stat.islnk is defined and (not sym.stat.islnk)  # => first time setup
+
+- name: 'Create systemd services'
+  template:
+    src: '{{ item }}.j2'
+    dest: '/etc/systemd/system/{{ item }}'
+    mode: '644'
+  loop:
+    - 'seafile.service'
+    - 'seahub.service'
+  notify:
+    - 'seafile restart'
+    - 'seahub restart'
+
+- name: 'Reload systemd units'
+  systemd:
+    daemon_reload: true
+
+- block:
+    - name: 'Run Seahub start script'  # noqa command-instead-of-shell
+      become_user: '{{ seafile_user_grp }}'
+      shell: './seahub.sh stop'
+      args:
+        executable: '/bin/bash'
+        chdir: '{{ seafile_install_dir }}/seafile-server-{{ seafile_version }}'
+
+    - name: 'Run Seafile stop script'  # noqa command-instead-of-shell
+      become_user: '{{ seafile_user_grp }}'
+      shell: './seafile.sh stop'
+      args:
+        executable: '/bin/bash'
+        chdir: '{{ seafile_install_dir }}/seafile-server-{{ seafile_version }}'
+  when: sym.stat.islnk is defined and (not sym.stat.islnk)  # => first time setup
+
+- name: 'Start Seafile and Seahub'
+  systemd:
+    name: '{{ item }}'
+    state: 'started'
+    enabled: true
+  loop:
+    - 'seafile'
+    - 'seahub'