feat: monado config v0 parser/builder

src/file_builders/mod.rs

@@ -1,4 +1,5 @@
 pub mod active_runtime_json;
 pub mod monado_autorun;
+pub mod monado_config_v0;
 pub mod openvrpaths_vrpath;
 pub mod wivrn_config;

src/file_builders/monado_config_v0.rs

@@ -0,0 +1,89 @@
+use serde::{Deserialize, Serialize};
+
+use crate::{
+    file_utils::{deserialize_file, get_writer},
+    paths::get_xdg_config_dir,
+};
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub enum XrtInputName {
+    #[serde(rename = "XRT_INPUT_GENERIC_TRACKER_POSE")]
+    XrtInputGenericTrackerPose,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub enum XrtTrackerRole {
+    #[serde(rename = "/user/vive_tracker_htcx/role/waist")]
+    ViveTrackerHtcxWaist,
+    #[serde(rename = "/user/vive_tracker_htcx/role/left_foot")]
+    ViveTrackerHtcxLeftFoot,
+    #[serde(rename = "/user/vive_tracker_htcx/role/right_foot")]
+    ViveTrackerHtcxRightFoot,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct TrackerRole {
+    pub device_serial: String,
+    pub role: XrtTrackerRole,
+    pub xrt_input_name: XrtInputName,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, Default)]
+pub struct MonadoConfigV0 {
+    #[serde(skip_serializing_if = "Option::is_none", rename = "$schema")]
+    _schema: Option<String>,
+    #[serde(skip_serializing_if = "Vec::is_empty")]
+    pub tracker_roles: Vec<TrackerRole>,
+}
+
+fn get_monado_config_v0_path() -> String {
+    format!(
+        "{config}/monado/config_v0.json",
+        config = get_xdg_config_dir()
+    )
+}
+
+fn get_monado_config_v0_from_path(path_s: &String) -> Option<MonadoConfigV0> {
+    deserialize_file(path_s)
+}
+
+pub fn get_monado_config_v0() -> MonadoConfigV0 {
+    get_monado_config_v0_from_path(&get_monado_config_v0_path())
+        .unwrap_or(MonadoConfigV0::default())
+}
+
+fn dump_monado_config_v0_to_path(config: &MonadoConfigV0, path_s: &String) {
+    let writer = get_writer(path_s);
+    serde_json::to_writer_pretty(writer, config).expect("Unable to save Monado config V0");
+}
+
+pub fn dump_monado_config_v0(config: &MonadoConfigV0) {
+    dump_monado_config_v0_to_path(config, &get_monado_config_v0_path());
+}
+
+#[cfg(test)]
+mod tests {
+    use super::get_monado_config_v0_from_path;
+    use crate::file_builders::monado_config_v0::{XrtInputName, XrtTrackerRole};
+
+    #[test]
+    fn can_read_monado_config_v0() {
+        let conf = get_monado_config_v0_from_path(&"./test/files/monado_config_v0.json".into())
+            .expect("Couldn't find monado config v0");
+        assert_eq!(conf.tracker_roles.len(), 3);
+        assert_eq!(
+            conf.tracker_roles
+                .get(0)
+                .expect("could not get tracker role zero")
+                .role,
+            XrtTrackerRole::ViveTrackerHtcxWaist
+        );
+        assert_eq!(
+            conf.tracker_roles
+                .get(0)
+                .expect("could not get tracker role zero")
+                .xrt_input_name,
+            XrtInputName::XrtInputGenericTrackerPose
+        );
+    }
+}

test/files/monado_config_v0.json

@@ -0,0 +1,20 @@
+{
+  "$schema": "https://monado.pages.freedesktop.org/monado/config_v0.schema.json",
+  "tracker_roles": [
+    {
+      "device_serial": "LHR-CDF1B4B7",
+      "role": "/user/vive_tracker_htcx/role/waist",
+      "xrt_input_name": "XRT_INPUT_GENERIC_TRACKER_POSE"
+    },
+    {
+      "device_serial": "LHR-9E402ED8",
+      "role": "/user/vive_tracker_htcx/role/left_foot",
+      "xrt_input_name": "XRT_INPUT_GENERIC_TRACKER_POSE"
+    },
+    {
+      "device_serial": "LHR-DE2477F5",
+      "role": "/user/vive_tracker_htcx/role/right_foot",
+      "xrt_input_name": "XRT_INPUT_GENERIC_TRACKER_POSE"
+    }
+  ]
+}