From 421f85defa089cee619ac779d6f558f3b754cf86 Mon Sep 17 00:00:00 2001
From: Slavi Pantaleev <slavi@devture.com>
Date: Wed, 4 Aug 2021 15:03:45 +0300
Subject: [PATCH] Add self-building support to matrix-email2matrix

---
 docs/self-building.md                         |  1 +
 group_vars/matrix_servers                     |  2 ++
 roles/matrix-email2matrix/defaults/main.yml   |  8 +++++-
 .../tasks/setup_install.yml                   | 28 +++++++++++++++++--
 4 files changed, 36 insertions(+), 3 deletions(-)

diff --git a/docs/self-building.md b/docs/self-building.md
index 3ab743f01..61f05c48d 100644
--- a/docs/self-building.md
+++ b/docs/self-building.md
@@ -29,6 +29,7 @@ List of roles where self-building the Docker image is currently possible:
 - `matrix-bridge-mx-puppet-skype`
 - `matrix-bot-mjolnir`
 - `matrix-bot-matrix-reminder-bot`
+- `matrix-email2matrix`
 
 Adding self-building support to other roles is welcome. Feel free to contribute!
 
diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index a2ccd3f10..cc45042db 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -1037,6 +1037,8 @@ matrix_dynamic_dns_enabled: false
 
 matrix_email2matrix_enabled: false
 
+matrix_email2matrix_container_image_self_build: "{{ matrix_architecture != 'amd64' }}"
+
 ######################################################################
 #
 # /matrix-email2matrix
diff --git a/roles/matrix-email2matrix/defaults/main.yml b/roles/matrix-email2matrix/defaults/main.yml
index e6bfa0fe6..3dfabc1af 100644
--- a/roles/matrix-email2matrix/defaults/main.yml
+++ b/roles/matrix-email2matrix/defaults/main.yml
@@ -2,9 +2,15 @@ matrix_email2matrix_enabled: true
 
 matrix_email2matrix_base_path: "{{ matrix_base_data_path }}/email2matrix"
 matrix_email2matrix_config_dir_path: "{{ matrix_email2matrix_base_path }}/config"
+matrix_email2matrix_docker_src_files_path: "{{ matrix_email2matrix_base_path }}/docker-src"
+
+matrix_email2matrix_container_image_self_build: false
+matrix_email2matrix_container_image_self_build_repo: "https://github.com/devture/email2matrix.git"
+matrix_email2matrix_container_image_self_build_branch: "{{ matrix_email2matrix_version }}"
 
 matrix_email2matrix_version: 1.0.1
-matrix_email2matrix_docker_image: "{{ matrix_container_global_registry_prefix }}devture/email2matrix:{{ matrix_email2matrix_version }}"
+matrix_email2matrix_docker_image_prefix: "{{ 'localhost/' if matrix_email2matrix_container_image_self_build else matrix_container_global_registry_prefix }}"
+matrix_email2matrix_docker_image: "{{ matrix_email2matrix_docker_image_prefix }}devture/email2matrix:{{ matrix_email2matrix_version }}"
 matrix_email2matrix_docker_image_force_pull: "{{ matrix_email2matrix_docker_image.endswith(':latest') }}"
 
 # A list of extra arguments to pass to the container
diff --git a/roles/matrix-email2matrix/tasks/setup_install.yml b/roles/matrix-email2matrix/tasks/setup_install.yml
index a167911f2..67e4ea5df 100644
--- a/roles/matrix-email2matrix/tasks/setup_install.yml
+++ b/roles/matrix-email2matrix/tasks/setup_install.yml
@@ -8,8 +8,10 @@
     owner: "{{ matrix_user_username }}"
     group: "{{ matrix_user_groupname }}"
   with_items:
-    - "{{ matrix_email2matrix_base_path }}"
-    - "{{ matrix_email2matrix_config_dir_path }}"
+    - { path: "{{ matrix_email2matrix_base_path }}", when: true }
+    - { path: "{{ matrix_email2matrix_config_dir_path }}", when: true }
+    - { path: "{{ matrix_email2matrix_docker_src_files_path }}", when: "{{ matrix_email2matrix_container_image_self_build }}"}
+  when: "item.when|bool"
 
 - name: Ensure Email2Matrix configuration file created
   template:
@@ -25,6 +27,28 @@
     source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
     force_source: "{{ matrix_email2matrix_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_email2matrix_docker_image_force_pull }}"
+  when: "not matrix_email2matrix_container_image_self_build|bool"
+
+- name: Ensure Email2Matrix repository is present on self-build
+  git:
+    repo: "{{ matrix_email2matrix_container_image_self_build_repo }}"
+    dest: "{{ matrix_email2matrix_docker_src_files_path }}"
+    version: "{{ matrix_email2matrix_container_image_self_build_branch }}"
+    force: "yes"
+  register: matrix_email2matrix_git_pull_results
+  when: "matrix_email2matrix_container_image_self_build|bool"
+
+- name: Ensure Email2Matrix Docker image is built
+  docker_image:
+    name: "{{ matrix_email2matrix_docker_image }}"
+    source: build
+    force_source: "{{ matrix_email2matrix_git_pull_results.changed 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_email2matrix_git_pull_results.changed }}"
+    build:
+      dockerfile: etc/docker/Dockerfile
+      path: "{{ matrix_email2matrix_docker_src_files_path }}"
+      pull: yes
+  when: "matrix_email2matrix_container_image_self_build|bool"
 
 - name: Ensure matrix-email2matrix.service installed
   template: