From ea4c167527ea4fed4ce26a1d1708053a84cd0d98 Mon Sep 17 00:00:00 2001
From: Yorick Barbanneau <ephase@xieme-art.org>
Date: Sun, 20 Nov 2022 00:32:22 +0100
Subject: [PATCH] First commit

---
 README.md            | 54 +++++++++++++++++++++++++++++++++++++++++
 files/kanshi.service | 11 +++++++++
 tasks/main.yml       | 38 +++++++++++++++++++++++++++++
 templates/config.j2  | 57 ++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 160 insertions(+)
 create mode 100644 README.md
 create mode 100644 files/kanshi.service
 create mode 100644 tasks/main.yml
 create mode 100644 templates/config.j2

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..cf854e0
--- /dev/null
+++ b/README.md
@@ -0,0 +1,54 @@
+Kanshi Ansible role
+-------------------
+
+This role install and configure [Kanshi](https://git.sr.ht/~emersion/kanshi})
+service.
+
+
+## Variables
+
+This role needs two variables for creating Kanshi configuration file 
+`sway_output` provided by [ansible-sway](https://git.epha.se/ephase/ansible-sway)
+role and `kanshi_profiles`.
+
+`sway_outputs` is not mandatory butuseful to provide id ans options for outputs.
+
+Here is an example of `kanshi_profile`
+
+```yaml
+kanshi_profiles:
+  - profile: 'laptop'
+    screens:
+      - id: 'eDP-1'
+  - profile: 'home'
+    screens:
+    - id: 'eDP-1'
+      enable: false
+    - id: 'iiyama_27_4k'
+      position: '1080,0'
+    - id: 'iiyama_23_fhd'
+      position: '0,0'
+      mode: '1920x1024'
+      transform: 90
+    options:
+      - id: 'eDP-1'
+        option: 'bg'
+        value: '~/images/bg.jpg'
+    commands:
+      - swaymsg workspace 1, move workspace to +eDP1+
+```
+
+ * `profile`: name of the profile
+ * `screens`: list of outputs
+   * `id`: id of the screen, could be the real name, ouput name like *HDMI-1*
+     (both given by `swaymsg -t output`) or id referenced in `sway_outputs`
+   * `position`: absolute position of the screen
+   * `mode`: resolution of the screen
+   * `scale`: scale factor for the screen
+   * `transform`: rotation (90, 180 or 270 degres) for the screen
+ * `options`: list of options:
+   * `id`: see above in *screens* section
+   * `options`: option name
+   * `value`: value
+ * `commands`: list of command to execute when switching to profile
+
diff --git a/files/kanshi.service b/files/kanshi.service
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index 0000000..8054271
--- /dev/null
+++ b/files/kanshi.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=Dynamic output configuration for Wayland compositors
+Documentation=https://sr.ht/~emersion/kanshi
+BindsTo=sway-session.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/kanshi
+
+[Install]
+WantedBy=sway-session.target
diff --git a/tasks/main.yml b/tasks/main.yml
new file mode 100644
index 0000000..c64a97c
--- /dev/null
+++ b/tasks/main.yml
@@ -0,0 +1,38 @@
+---
+- name: Install Kanshi package
+  ansible.builtin.package:
+    name: kanshi
+    state: present
+  become: true
+
+- name: Create Sway config dirs
+  ansible.builtin.file:
+    path: '{{ ansible_user_dir ~ "/.config/sway/conf.d" }}'
+    state: directory
+    mode: 0750
+    owner: '{{ ansible_user_uid }}'
+    group: '{{ ansible_user_gid }}'
+
+- name: Render templates for Kanshi config file
+  ansible.builtin.template:
+    src: config.j2
+    dest: '{{ ansible_user_dir}}/.config/kanshi/config'
+    owner: '{{ ansible_user_uid }}'
+    group: '{{ ansible_user_gid }}'
+    lstrip_blocks: yes
+    trim_blocks: yes
+    mode: 0640
+      #any_errors_fatal: true
+
+- name: copy systemd service file {{ item }}
+  ansible.builtin.copy:
+     src: 'kanshi.service'
+     dest: '{{ ansible_user_dir }}/.config/systemd/user/'
+     mode: 0640
+
+- name: activate service
+  ansible.builtin.systemd:
+     name: 'kanshi.service'
+     scope: user
+     state: started
+     enabled: yes
diff --git a/templates/config.j2 b/templates/config.j2
new file mode 100644
index 0000000..de87f2d
--- /dev/null
+++ b/templates/config.j2
@@ -0,0 +1,57 @@
+# {{ ansible_managed }}
+{% if kanshi_profiles is defined %}
+{% for p in kanshi_profiles %}
+profile {{ p.profile | default('') }} {
+    {# Process screens #}
+    {% for s in p.screens %}
+        {% set current = (sway_outputs | selectattr('id','==', s.id))[0] %}
+        {{- '  output "' ~ current['name'] | default(s.id) ~ '"' -}}
+        {% if s.status is defined and s.status == 'disable' %}
+            {{- ' disable' -}}
+        {% else %}
+            {% if s.status is defined and s.status == 'enable' %}
+            {{- ' enable' -}}
+            {% endif %}
+            {% if s.position is defined %}
+            {{- ' position ' ~ s.position -}}
+            {% endif %}
+            {% if s.transform is defined %}
+            {# 
+               use sway config transform here is not a good idea because 
+               rotation will be applied two times
+            #}
+            {{- ' transform ' ~ s.transform -}}
+            {% endif %}
+            {% if s.scale is defined %}
+            {{- ' scale ' ~ s.scale -}}
+            {% elif current['options']['scale'] is defined %}
+            {{- ' scale ' ~ current['options']['scale'] -}}
+            {% endif %}
+        {% endif %}
+
+    {% endfor -%}
+
+    {# process options#}
+    {% if p.options is defined %}
+    {% for o in p.options %}
+        {% set current = (sway_outputs | selectattr('id','==', o.id))[0] %}
+        {{- '  output "' ~ current['name'] | default(s.id) ~ '" ' -}}
+        {{ o.option }} {{ o.value }}
+    {% endfor -%}
+    {% endif -%}
+
+    {# Process command#}
+    {% if p.commands is defined %}
+    {% for c in p.commands %}
+        {% set  cmd = namespace(cmd = c) %}
+        {% if sway_outputs is defined %}
+        {% for o in sway_outputs %}
+        {% set cmd.cmd = ( cmd.cmd | replace('+'+o.id+'+', '"'+o.name+'"')) %}
+        {% endfor %}
+        {% endif %}
+        {{- '  exec ' ~ cmd.cmd }}
+    {% endfor -%}
+    {% endif -%}
+}
+{% endfor %}
+{% endif %}