feat(config): json schema support

This PR includes the necessary code changes, CI changes and documentation to generate and deploy a full JSON schema for each release and the master branch, which can be used within config files for autocomplete and type checking.

.github/workflows/deploy.yml

@@ -6,20 +6,13 @@ on:
       - v[0-9]+.[0-9]+.[0-9]+
 
 jobs:
-  deploy:
+  release:
+    name: 'Create Release'
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v3
 
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          override: true
-
-      - name: Install build deps
-        run: ./.github/scripts/ubuntu_setup.sh
-
       - name: Update CHANGELOG
         id: changelog
         uses: Requarks/changelog-action@v1
@@ -41,9 +34,54 @@ jobs:
         uses: stefanzweifel/git-auto-commit-action@v4
         with:
           branch: master
-          commit_message: 'docs: update CHANGELOG.md for ${{ github.ref_name }} [skip ci]'
+          commit_message: 'chore: update CHANGELOG.md for ${{ github.ref_name }} [skip ci]'
           file_pattern: CHANGELOG.md
 
-      - uses: katyo/publish-crates@v1
+
+  publish-crate:
+    name: 'Publish Crate'
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+
+      - name: Install build deps
+        run: ./.github/scripts/ubuntu_setup.sh
+
+      - name: Publish crate
+        uses: katyo/publish-crates@v1
         with:
           registry-token: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+
+
+  publish-schema:
+    name: 'Publish Schema'
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: Swatinem/rust-cache@v2
+        name: Cache dependencies
+
+      - name: Install build deps
+        run: ./.github/scripts/ubuntu_setup.sh
+
+      - name: Build schema
+        run: cargo build --features schema -- --print-schema > target/schema-${{ github.ref_name }}.json
+
+      - name: Copy file via SSH
+        uses: appleboy/scp-action@v0.1.7
+        with:
+          host: ${{ secrets.SSH_HOST }}
+          port: ${{ secrets.SSH_PORT }}
+          username: ${{ secrets.SSH_USERNAME }}
+          key: ${{ secrets.SSH_PRIVATE_KEY }}
+          source: "target/schema-${{ github.ref_name }}.json"
+          target: /storage/Public/github/ironbar
+          strip_components: 1

.github/workflows/schema.yml

@@ -0,0 +1,41 @@
+name: Publish Schema
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ "master" ]
+
+env:
+  CARGO_TERM_COLOR: always
+  RUSTFLAGS: '-Dwarnings'
+
+jobs:
+  publish-schema:
+    name: 'Publish Schema'
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: Swatinem/rust-cache@v2
+        name: Cache dependencies
+
+      - name: Install build deps
+        run: ./.github/scripts/ubuntu_setup.sh
+
+      - name: Build
+        run: cargo build --features schema
+
+      - name: Print schema
+        run: cargo run --features schema -- --print-schema > target/schema.json
+
+      - name: Copy file via SSH
+        uses: appleboy/scp-action@v0.1.7
+        with:
+          host: ${{ secrets.SSH_HOST }}
+          port: ${{ secrets.SSH_PORT }}
+          username: ${{ secrets.SSH_USERNAME }}
+          key: ${{ secrets.SSH_PRIVATE_KEY }}
+          source: "target/schema.json"
+          target: /storage/Public/github/ironbar
+          strip_components: 1

Cargo.lock

@@ -755,6 +755,12 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ea835d29036a4087793836fa931b08837ad5e957da9e23886b29586fb9b6650"
 
+[[package]]
+name = "dyn-clone"
+version = "1.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d6ef0072f8a535281e4876be788938b528e9a1d43900b82c2569af7da799125"
+
 [[package]]
 name = "either"
 version = "1.8.1"
@@ -1606,6 +1612,7 @@ dependencies = [
  "notify",
  "regex",
  "reqwest",
+ "schemars",
  "serde",
  "serde_json",
  "smithay-client-toolkit",
@@ -2637,6 +2644,30 @@ dependencies = [
  "windows-sys 0.42.0",
 ]
 
+[[package]]
+name = "schemars"
+version = "0.8.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc6e7ed6919cb46507fb01ff1654309219f62b4d603822501b0b80d42f6f21ef"
+dependencies = [
+ "dyn-clone",
+ "schemars_derive",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "schemars_derive"
+version = "0.8.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "185f2b7aa7e02d418e453790dde16890256bbd2bcd04b7dc5348811052b53f49"
+dependencies = [
+ "proc-macro2",
+ "quote 1.0.35",
+ "serde_derive_internals",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "scoped-tls"
 version = "1.0.1"
@@ -2698,6 +2729,17 @@ dependencies = [
  "syn 2.0.48",
 ]
 
+[[package]]
+name = "serde_derive_internals"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "330f01ce65a3a5fe59a60c82f3c9a024b573b8a6e875bd233fe5f934e71d54e3"
+dependencies = [
+ "proc-macro2",
+ "quote 1.0.35",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "serde_json"
 version = "1.0.117"

Cargo.toml

@@ -76,6 +76,8 @@ workspaces = ["futures-lite"]
 "workspaces+sway" = ["workspaces", "swayipc-async"]
 "workspaces+hyprland" = ["workspaces", "hyprland"]
 
+schema = ["dep:schemars"]
+
 [dependencies]
 # core
 gtk = "0.18.1"
@@ -157,3 +159,6 @@ regex = { version = "1.10.4", default-features = false, features = [
   "std",
 ], optional = true } # music, sys_info
 zbus = { version = "3.15.2", default-features = false, features = ["tokio"], optional = true } # notifications, upower
+
+# schema
+schemars = { version = "0.8.19", optional = true }

docs/Compiling.md

@@ -101,6 +101,9 @@ cargo build --release --no-default-features \
 | workspaces+all      | Enables the `workspaces` module with support for all compositors.                 |
 | workspaces+sway     | Enables the `workspaces` module with support for Sway.                            |
 | workspaces+hyprland | Enables the `workspaces` module with support for Hyprland.                        |
+| **Other**           |                                                                                   |
+| schema              | Enables JSON schema support and the CLI `--print-schema` flag.                    |
+
 
 ## Speeding up compiling
 

docs/Configuration guide.md

@@ -20,11 +20,18 @@ Ironbar supports a range of configuration formats, so you can pick your favourit
 - `config.json`
 - `config.toml`
 - `config.yaml`
-- `config.corn` (Experimental, includes variable support for re-using blocks.
+- `config.corn` (Includes variable support for re-using blocks.
   See [here](https://github.com/jakestanger/corn) for info)
 
 You can also override the default config path using the `IRONBAR_CONFIG` environment variable.
 
+A hosted schema is available for the latest Git version ~~and each versioned release~~.
+JSON and YAML both support schema checking by adding the `$schema` key 
+to the top level of your config.
+
+- master: `https://f.jstanger.dev/github/ironbar/schema.json`
+- ~~release: `https://f.jstanger.dev/github/ironbar/schema-v0.16.0.json`~~ *(Not released yet)*
+
 ## 2. Pick your use-case
 
 Ironbar gives you a few ways to configure the bar to suit your needs.

examples/config.json

@@ -1,4 +1,5 @@
 {
+  "$schema": "https://f.jstanger.dev/github/ironbar/schema.json",
   "anchor_to_edges": true,
   "position": "bottom",
   "icon_theme": "Paper",

examples/config.yaml

@@ -1,3 +1,4 @@
+$schema: https://f.jstanger.dev/github/ironbar/schema.json
 anchor_to_edges: true
 position: bottom
 icon_theme: Paper

src/cli.rs

@@ -9,6 +9,12 @@ pub struct Args {
     #[command(subcommand)]
     pub command: Option<Command>,
 
+    /// Prints the config JSON schema to `stdout`
+    /// and exits.
+    #[cfg(feature = "schema")]
+    #[arg(long("print-schema"))]
+    pub print_schema: bool,
+
     /// `bar_id` argument passed by `swaybar_command`.
     /// Not used.
     #[arg(short('b'), hide(true))]

src/config/common.rs

@@ -16,6 +16,7 @@ use tracing::trace;
 /// see [here](script).
 /// For information on styling, please see the [styling guide](styling-guide).
 #[derive(Debug, Default, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct CommonConfig {
     /// Sets the unique widget name,
     /// allowing you to target it in CSS using `#name`.
@@ -160,6 +161,7 @@ pub struct CommonConfig {
 
 #[derive(Debug, Deserialize, Clone)]
 #[serde(rename_all = "snake_case")]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum TransitionType {
     None,
     Crossfade,
@@ -169,6 +171,7 @@ pub enum TransitionType {
 
 #[derive(Debug, Default, Deserialize, Clone, Copy)]
 #[serde(rename_all = "snake_case")]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum ModuleOrientation {
     #[default]
     #[serde(alias = "h")]

src/config/mod.rs

@@ -36,11 +36,15 @@ use color_eyre::Result;
 use serde::Deserialize;
 use std::collections::HashMap;
 
+#[cfg(feature = "schema")]
+use schemars::JsonSchema;
+
 pub use self::common::{CommonConfig, ModuleOrientation, TransitionType};
 pub use self::truncate::TruncateMode;
 
 #[derive(Debug, Deserialize, Clone)]
 #[serde(tag = "type", rename_all = "snake_case")]
+#[cfg_attr(feature = "schema", derive(JsonSchema))]
 pub enum ModuleConfig {
     #[cfg(feature = "cairo")]
     Cairo(Box<CairoModule>),
@@ -117,6 +121,7 @@ impl ModuleConfig {
 }
 
 #[derive(Debug, Clone)]
+#[cfg_attr(feature = "schema", derive(JsonSchema))]
 pub enum MonitorConfig {
     Single(BarConfig),
     Multiple(Vec<BarConfig>),
@@ -124,6 +129,7 @@ pub enum MonitorConfig {
 
 #[derive(Debug, Deserialize, Copy, Clone, PartialEq, Eq)]
 #[serde(rename_all = "snake_case")]
+#[cfg_attr(feature = "schema", derive(JsonSchema))]
 pub enum BarPosition {
     Top,
     Bottom,
@@ -138,6 +144,7 @@ impl Default for BarPosition {
 }
 
 #[derive(Debug, Default, Deserialize, Copy, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "schema", derive(JsonSchema))]
 pub struct MarginConfig {
     #[serde(default)]
     pub bottom: i32,
@@ -156,6 +163,7 @@ pub struct MarginConfig {
 /// depending on your [use-case](#2-pick-your-use-case).
 ///
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(JsonSchema))]
 pub struct BarConfig {
     /// A unique identifier for the bar, used for controlling it over IPC.
     /// If not set, uses a generated integer suffix.
@@ -292,6 +300,7 @@ impl Default for BarConfig {
 }
 
 #[derive(Debug, Deserialize, Clone, Default)]
+#[cfg_attr(feature = "schema", derive(JsonSchema))]
 pub struct Config {
     /// A map of [ironvar](ironvar) keys and values
     /// to initialize Ironbar with on startup.

src/config/truncate.rs

@@ -4,6 +4,7 @@ use serde::Deserialize;
 
 #[derive(Debug, Deserialize, Clone, Copy)]
 #[serde(rename_all = "snake_case")]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum EllipsizeMode {
     Start,
     Middle,
@@ -28,6 +29,7 @@ impl From<EllipsizeMode> for GtkEllipsizeMode {
 ///
 #[derive(Debug, Deserialize, Clone, Copy)]
 #[serde(untagged)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum TruncateMode {
     /// Auto mode lets GTK decide when to ellipsize.
     ///

src/dynamic_value/dynamic_bool.rs

@@ -8,6 +8,7 @@ use tokio::sync::mpsc;
 
 #[derive(Debug, Deserialize, Clone)]
 #[serde(untagged)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum DynamicBool {
     /// Either a script or variable, to be determined.
     Unknown(String),

src/main.rs

@@ -76,6 +76,13 @@ fn main() {
 fn run_with_args() {
     let args = cli::Args::parse();
 
+    #[cfg(feature = "schema")]
+    if args.print_schema {
+        let schema = schemars::schema_for!(Config);
+        println!("{}", serde_json::to_string_pretty(&schema).unwrap());
+        return;
+    }
+
     match args.command {
         Some(command) => {
             let rt = create_runtime();

src/modules/cairo.rs

@@ -18,6 +18,7 @@ use tokio::time::sleep;
 use tracing::{debug, error};
 
 #[derive(Debug, Clone, Deserialize)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct CairoModule {
     /// The path to the Lua script to load.
     /// This can be absolute, or relative to the working directory.

src/modules/clipboard.rs

@@ -17,6 +17,7 @@ use tokio::sync::{broadcast, mpsc};
 use tracing::{debug, error};
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct ClipboardModule {
     /// The icon to show on the bar widget button.
     /// Supports [image](images) icons.

src/modules/clock.rs

@@ -16,6 +16,7 @@ use crate::modules::{
 use crate::{glib_recv, module_impl, send_async, spawn, try_send};
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct ClockModule {
     /// The format string to use for the date/time shown on the bar.
     /// Pango markup is supported.

src/modules/custom/box.rs

@@ -6,6 +6,7 @@ use gtk::prelude::*;
 use serde::Deserialize;
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct BoxWidget {
     /// Widget name.
     ///

src/modules/custom/button.rs

@@ -10,6 +10,7 @@ use crate::{build, try_send};
 use super::{CustomWidget, CustomWidgetContext, ExecEvent, WidgetConfig};
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct ButtonWidget {
     /// Widget name.
     ///

src/modules/custom/image.rs

@@ -9,6 +9,7 @@ use crate::image::ImageProvider;
 use super::{CustomWidget, CustomWidgetContext};
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct ImageWidget {
     /// Widget name.
     ///

src/modules/custom/label.rs

@@ -9,6 +9,7 @@ use crate::dynamic_value::dynamic_string;
 use super::{CustomWidget, CustomWidgetContext};
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct LabelWidget {
     /// Widget name.
     ///

src/modules/custom/mod.rs

@@ -28,6 +28,7 @@ use tokio::sync::{broadcast, mpsc};
 use tracing::{debug, error};
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct CustomModule {
     /// Modules and widgets to add to the bar container.
     ///
@@ -45,6 +46,7 @@ pub struct CustomModule {
 }
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct WidgetConfig {
     /// One of a custom module native Ironbar module.
     #[serde(flatten)]
@@ -57,6 +59,7 @@ pub struct WidgetConfig {
 
 #[derive(Debug, Deserialize, Clone)]
 #[serde(untagged)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum WidgetOrModule {
     /// A custom-module specific basic widget
     Widget(Widget),
@@ -67,6 +70,7 @@ pub enum WidgetOrModule {
 
 #[derive(Debug, Deserialize, Clone)]
 #[serde(tag = "type", rename_all = "snake_case")]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum Widget {
     /// A container to place nested widgets inside.
     Box(BoxWidget),

src/modules/custom/progress.rs

@@ -13,6 +13,7 @@ use crate::{build, glib_recv_mpsc, spawn, try_send};
 use super::{CustomWidget, CustomWidgetContext};
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct ProgressWidget {
     /// Widget name.
     ///

src/modules/custom/slider.rs

@@ -16,6 +16,7 @@ use crate::{build, glib_recv_mpsc, spawn, try_send};
 use super::{CustomWidget, CustomWidgetContext, ExecEvent};
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct SliderWidget {
     /// Widget name.
     ///

src/modules/focused.rs

@@ -12,6 +12,7 @@ use tokio::sync::mpsc;
 use tracing::debug;
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct FocusedModule {
     /// Whether to show icon on the bar.
     ///

src/modules/label.rs

@@ -9,6 +9,7 @@ use serde::Deserialize;
 use tokio::sync::mpsc;
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct LabelModule {
     /// The text to show on the label.
     /// This is a [Dynamic String](dynamic-values#dynamic-string).

src/modules/launcher/mod.rs

@@ -19,6 +19,7 @@ use tokio::sync::{broadcast, mpsc};
 use tracing::{debug, error, trace};
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct LauncherModule {
     /// List of app IDs (or classes) to always show regardless of open state,
     /// in the order specified.

src/modules/music/config.rs

@@ -4,6 +4,7 @@ use serde::Deserialize;
 use std::path::PathBuf;
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct Icons {
     /// Icon to display when playing.
     ///
@@ -71,6 +72,7 @@ impl Default for Icons {
 
 #[derive(Debug, Deserialize, Clone, Copy)]
 #[serde(rename_all = "snake_case")]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum PlayerType {
     Mpd,
     Mpris,
@@ -83,6 +85,7 @@ impl Default for PlayerType {
 }
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct MusicModule {
     /// Type of player to connect to
     #[serde(default)]

src/modules/notifications.rs

@@ -10,6 +10,7 @@ use tokio::sync::mpsc::Receiver;
 use tracing::error;
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct NotificationsModule {
     /// Whether to show the current notification count.
     ///
@@ -29,6 +30,7 @@ pub struct NotificationsModule {
 }
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 struct Icons {
     /// Icon to show when the panel is closed, with no notifications.
     ///

src/modules/script.rs

@@ -10,6 +10,7 @@ use tokio::sync::mpsc;
 use tracing::error;
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct ScriptModule {
     /// Path to script to execute.
     ///

src/modules/sysinfo.rs

@@ -14,6 +14,7 @@ use tokio::sync::mpsc;
 use tokio::time::sleep;
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct SysInfoModule {
     /// List of strings including formatting tokens.
     /// For available tokens, see [below](#formatting-tokens).
@@ -51,6 +52,7 @@ pub struct SysInfoModule {
 }
 
 #[derive(Debug, Deserialize, Copy, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct Intervals {
     /// The number of seconds between refreshing memory data.
     ///
@@ -91,6 +93,7 @@ pub struct Intervals {
 
 #[derive(Debug, Deserialize, Copy, Clone)]
 #[serde(untagged)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum Interval {
     All(u64),
     Individual(Intervals),

src/modules/tray/mod.rs

@@ -19,6 +19,7 @@ use tokio::sync::mpsc;
 use tracing::{debug, error, warn};
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct TrayModule {
     /// Requests that icons from the theme be used over the item-provided item.
     /// Most items only provide one or the other so this will have no effect in most circumstances.
@@ -38,7 +39,8 @@ pub struct TrayModule {
     /// **Valid options**: `top_to_bottom`, `bottom_to_top`, `left_to_right`, `right_to_left`
     /// <br>
     /// **Default**: `left_to_right` if bar is horizontal, `top_to_bottom` if bar is vertical
-    #[serde(default, deserialize_with = "deserialize_orientation")]
+    #[serde(default, deserialize_with = "deserialize_pack_direction")]
+    #[cfg_attr(feature = "schema", schemars(schema_with = "schema_pack_direction"))]
     direction: Option<PackDirection>,
 
     /// See [common options](module-level-options#common-options).
@@ -50,7 +52,7 @@ const fn default_icon_size() -> u32 {
     16
 }
 
-fn deserialize_orientation<'de, D>(deserializer: D) -> Result<Option<PackDirection>, D::Error>
+fn deserialize_pack_direction<'de, D>(deserializer: D) -> Result<Option<PackDirection>, D::Error>
 where
     D: serde::Deserializer<'de>,
 {
@@ -61,11 +63,24 @@ where
             "right_to_left" => Ok(PackDirection::Rtl),
             "top_to_bottom" => Ok(PackDirection::Ttb),
             "bottom_to_top" => Ok(PackDirection::Btt),
-            _ => Err(serde::de::Error::custom("invalid value for orientation")),
+            _ => Err(serde::de::Error::custom("invalid value for direction")),
         })
         .transpose()
 }
 
+#[cfg(feature = "schema")]
+fn schema_pack_direction(gen: &mut schemars::gen::SchemaGenerator) -> schemars::schema::Schema {
+    use schemars::JsonSchema;
+    let mut schema: schemars::schema::SchemaObject = <String>::json_schema(gen).into();
+    schema.enum_values = Some(vec![
+        "top_to_bottom".into(),
+        "bottom_to_top".into(),
+        "left_to_right".into(),
+        "right_to_left".into(),
+    ]);
+    schema.into()
+}
+
 impl Module<MenuBar> for TrayModule {
     type SendMessage = Event;
     type ReceiveMessage = ActivateRequest;

src/modules/upower.rs

@@ -22,6 +22,7 @@ const HOUR: i64 = 60 * 60;
 const MINUTE: i64 = 60;
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct UpowerModule {
     /// The format string to use for the widget button label.
     /// For available tokens, see [below](#formatting-tokens).

src/modules/volume.rs

@@ -14,6 +14,7 @@ use std::collections::HashMap;
 use tokio::sync::mpsc;
 
 #[derive(Debug, Clone, Deserialize)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct VolumeModule {
     /// The format string to use for the widget button label.
     /// For available tokens, see [below](#formatting-tokens).
@@ -45,6 +46,7 @@ fn default_format() -> String {
 }
 
 #[derive(Debug, Clone, Deserialize)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct Icons {
     /// Icon to show for high volume levels.
     ///

src/modules/workspaces.rs

@@ -15,6 +15,7 @@ use tracing::{debug, trace, warn};
 
 #[derive(Debug, Deserialize, Clone, Copy, Eq, PartialEq)]
 #[serde(rename_all = "snake_case")]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum SortOrder {
     /// Shows workspaces in the order they're added
     Added,
@@ -31,6 +32,7 @@ impl Default for SortOrder {
 
 #[derive(Debug, Deserialize, Clone)]
 #[serde(untagged)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum Favorites {
     ByMonitor(HashMap<String, Vec<String>>),
     Global(Vec<String>),
@@ -43,6 +45,7 @@ impl Default for Favorites {
 }
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct WorkspacesModule {
     /// Map of actual workspace names to custom names.
     ///

src/script.rs

@@ -14,6 +14,7 @@ use tracing::{debug, error, trace, warn};
 
 #[derive(Debug, Deserialize, Clone)]
 #[serde(untagged)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum ScriptInput {
     String(String),
     Struct(Script),
@@ -21,6 +22,7 @@ pub enum ScriptInput {
 
 #[derive(Debug, Deserialize, Clone, Copy, Eq, PartialEq)]
 #[serde(rename_all = "snake_case")]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub enum ScriptMode {
     Poll,
     Watch,
@@ -75,6 +77,7 @@ impl ScriptMode {
 }
 
 #[derive(Debug, Deserialize, Clone)]
+#[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct Script {
     #[serde(default = "ScriptMode::default")]
     pub(crate) mode: ScriptMode,