Add config parsing logic

Cargo.lock

@@ -167,7 +167,7 @@ dependencies = [
  "fnv",
  "ident_case",
  "proc-macro2",
- "quote 1.0.33",
+ "quote 1.0.35",
  "strsim",
  "syn 1.0.109",
 ]
@@ -179,7 +179,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4aab4dbc9f7611d8b55048a3a16d2d010c2c8334e46304b40ac1cc14bf3b48e"
 dependencies = [
  "darling_core",
- "quote 1.0.33",
+ "quote 1.0.35",
  "syn 1.0.109",
 ]
 
@@ -228,7 +228,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4e40a16955681d469ab3da85aaa6b42ff656b3c67b52e1d8d3dd36afe97fd462"
 dependencies = [
  "proc-macro2",
- "quote 1.0.33",
+ "quote 1.0.35",
  "syn 1.0.109",
 ]
 
@@ -261,7 +261,7 @@ checksum = "55a5e644a80e6d96b2b4910fa7993301d7b7926c045b475b62202b20a36ce69e"
 dependencies = [
  "darling",
  "proc-macro2",
- "quote 1.0.33",
+ "quote 1.0.35",
  "syn 1.0.109",
 ]
 
@@ -320,8 +320,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
  "proc-macro2",
- "quote 1.0.33",
+ "quote 1.0.35",
- "syn 2.0.29",
+ "syn 2.0.52",
 ]
 
 [[package]]
@@ -391,6 +391,19 @@ dependencies = [
  "hashbrown",
 ]
 
+[[package]]
+name = "int-enum"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2e6a45c18bc4873fef226acaabbc8cfe1e28c6778d6de4ea58c7cf903339db0"
+dependencies = [
+ "proc-macro2",
+ "proc-macro2-diagnostics",
+ "quote 1.0.35",
+ "syn 2.0.52",
+ "version_check",
+]
+
 [[package]]
 name = "itertools"
 version = "0.11.0"
@@ -519,7 +532,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "876a53fff98e03a936a674b29568b0e605f06b29372c2489ff4de23f1949743d"
 dependencies = [
  "proc-macro2",
- "quote 1.0.33",
+ "quote 1.0.35",
  "syn 1.0.109",
 ]
 
@@ -553,6 +566,7 @@ version = "0.1.0"
 dependencies = [
  "crossbeam-channel",
  "delay_map",
+ "int-enum",
  "itertools",
  "libpulse-binding",
  "midir",
@@ -581,13 +595,26 @@ checksum = "26072860ba924cbfa98ea39c8c19b4dd6a4a25423dbdf219c1eca91aa0cf6964"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.66"
+version = "1.0.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18fb31db3f9bddb2ea821cde30a9f70117e3f119938b5ee630b7403aa6e2ead9"
+checksum = "e2422ad645d89c99f8f3e6b88a9fdeca7fabeac836b1002371c4367c8f984aae"
 dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "proc-macro2-diagnostics"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af066a9c399a26e020ada66a034357a868728e72cd426f3adcd35f80d88d88c8"
+dependencies = [
+ "proc-macro2",
+ "quote 1.0.35",
+ "syn 2.0.52",
+ "version_check",
+ "yansi",
+]
+
 [[package]]
 name = "quote"
 version = "0.3.15"
@@ -596,9 +623,9 @@ checksum = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
 
 [[package]]
 name = "quote"
-version = "1.0.33"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
+checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
 dependencies = [
  "proc-macro2",
 ]
@@ -625,8 +652,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4eca7ac642d82aa35b60049a6eccb4be6be75e599bd2e9adb5f875a737654af2"
 dependencies = [
  "proc-macro2",
- "quote 1.0.33",
+ "quote 1.0.35",
- "syn 2.0.29",
+ "syn 2.0.52",
 ]
 
 [[package]]
@@ -671,18 +698,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
  "proc-macro2",
- "quote 1.0.33",
+ "quote 1.0.35",
  "unicode-ident",
 ]
 
 [[package]]
 name = "syn"
-version = "2.0.29"
+version = "2.0.52"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c324c494eba9d92503e6f1ef2e6df781e78f6a7705a0202d9801b198807d518a"
+checksum = "b699d15b36d1f02c3e7c69f8ffef53de37aefae075d8488d4ba1a7788d574a07"
 dependencies = [
  "proc-macro2",
- "quote 1.0.33",
+ "quote 1.0.35",
  "unicode-ident",
 ]
 
@@ -711,8 +738,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6bb623b56e39ab7dcd4b1b98bb6c8f8d907ed255b18de254088016b27a8ee19b"
 dependencies = [
  "proc-macro2",
- "quote 1.0.33",
+ "quote 1.0.35",
- "syn 2.0.29",
+ "syn 2.0.52",
 ]
 
 [[package]]
@@ -791,6 +818,12 @@ version = "0.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8c1f860d7d29cf02cb2f3f359fd35991af3d30bac52c57d265a3c461074cb4dc"
 
+[[package]]
+name = "version_check"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.87"
@@ -811,8 +844,8 @@ dependencies = [
  "log",
  "once_cell",
  "proc-macro2",
- "quote 1.0.33",
+ "quote 1.0.35",
- "syn 2.0.29",
+ "syn 2.0.52",
  "wasm-bindgen-shared",
 ]
 
@@ -822,7 +855,7 @@ version = "0.2.87"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dee495e55982a3bd48105a7b947fd2a9b4a8ae3010041b9e0faab3f9cd028f1d"
 dependencies = [
- "quote 1.0.33",
+ "quote 1.0.35",
  "wasm-bindgen-macro-support",
 ]
 
@@ -833,8 +866,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "54681b18a46765f095758388f2d0cf16eb8d4169b639ab575a8f5693af210c7b"
 dependencies = [
  "proc-macro2",
- "quote 1.0.33",
+ "quote 1.0.35",
- "syn 2.0.29",
+ "syn 2.0.52",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -942,3 +975,9 @@ checksum = "7c2e3184b9c4e92ad5167ca73039d0c42476302ab603e2fec4487511f38ccefc"
 dependencies = [
  "memchr",
 ]
+
+[[package]]
+name = "yansi"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c2861d76f58ec8fc95708b9b1e417f7b12fd72ad33c01fa6886707092dea0d3"

Cargo.toml

@@ -6,6 +6,7 @@ edition = "2021"
 [dependencies]
 crossbeam-channel = "0.5.8"
 delay_map = "0.3.0"
+int-enum = "1.0.1"
 itertools = "0.11.0"
 libpulse-binding = "2.28.1"
 midir = "0.9.1"

src/config.rs

@@ -1,65 +1,128 @@
+use int_enum::IntEnum;
 use serde::{Deserialize, Serialize};
-use std::{collections::BTreeMap, fmt::Debug};
+use std::path::Path;
+use std::process;
+use std::{collections::BTreeMap, fmt::Debug, fs};
 use toml::ser::Error;
 
-pub fn default() -> Result<String, Error> {
+pub fn init(path: &str) -> Config {
-    let mut applications = BTreeMap::new();
+    if !Path::new(path).exists() {
-    applications.insert("Feishin".to_string(), "Feishin".to_string());
+        write_default(path);
-    applications.insert("Librewolf".to_string(), "Librewolf".to_string());
+    }
+    load(path)
+}
+
+fn serialize_default() -> Result<String, Error> {
+    let mut mpris = BTreeMap::new();
     let mut keymap = BTreeMap::new();
     keymap.insert(
         NanoKeys::Param4Mute,
-        "program-mute/Feishin,Librewolf".to_string(),
+        vec![
+            KeyMapVariant::Mpris {
+                ids: vec!["Feishin".to_string()],
+                action: MprisAction::PlayPause,
+            },
+            KeyMapVariant::PipeWire {
+                ids: vec![
+                    "alsa_output.usb-0d8c_Generic_USB_Audio_Device-00.iec958-stereo".to_string(),
+                ],
+            },
+        ],
     );
-    let mut audioinputs = BTreeMap::new();
+    keymap.insert(
-    audioinputs.insert(
+        NanoKeys::Play,
-        "headphones".to_string(),
+        vec![KeyMapVariant::Exec {
-        "alsa_output.usb-Burr-Brown_from_TI_USB_Audio_CODEC-00.pro-output-0".to_string(),
+            command: "echo hello".to_string(),
+        }],
     );
-    audioinputs.insert(
+    mpris.insert("music".to_string(), "Feishin".to_string());
-        "speakers".to_string(),
-        "alsa_output.pci-0000_0c_00.4.analog-stereo".to_string(),
-    );
-    let audiooutputs = BTreeMap::new();
     let conf: Config = Config {
         general: General {
-            nano_kontrol_pattern: "nanoKONTROL2".to_string(),
+            midi_device: "nanoKONTROL2".to_string(),
             led_mode: LedMode::Toggle,
         },
-        applications,
         keymap,
-        audioinputs,
-        audiooutputs,
     };
+
     toml::to_string(&conf)
 }
 
+fn deserialize(path: &str) -> Result<Config, toml::de::Error> {
+    let cfg_str = fs::read_to_string(path).unwrap();
+    toml::from_str::<Config>(&cfg_str)
+}
+
+pub fn load(path: &str) -> Config {
+    let cfg = deserialize(path);
+
+    match cfg {
+        Ok(expr) => expr,
+        Err(expr) => {
+            eprintln!("Failed loading config at {path}: {expr}");
+            process::exit(1);
+        }
+    }
+}
+
+pub fn write_default(path: &str) -> () {
+    let cfg_toml = serialize_default();
+    match cfg_toml {
+        Ok(cfg_toml_text) => {
+            let _ = fs::write(path, &cfg_toml_text);
+        }
+        Err(expr) => {
+            eprintln!("Failed serializing default config: {expr}");
+            process::exit(1);
+        }
+    }
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub enum MprisAction {
+    Play,
+    Pause,
+    PlayPause,
+    Stop,
+    Next,
+    Previous,
+    VOLUME,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(tag = "type")]
+pub enum KeyMapVariant {
+    Mpris {
+        ids: Vec<String>,
+        action: MprisAction,
+    },
+    PipeWire {
+        ids: Vec<String>,
+    },
+    Exec {
+        command: String,
+    },
+}
+
 #[derive(Debug, Serialize, Deserialize)]
 pub struct Config {
     pub general: General,
-    pub audioinputs: BTreeMap<String, String>,
+    pub keymap: BTreeMap<NanoKeys, Vec<KeyMapVariant>>,
-    pub audiooutputs: BTreeMap<String, String>,
-    pub applications: BTreeMap<String, String>,
-    pub keymap: BTreeMap<NanoKeys, String>,
 }
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct General {
-    #[serde(rename = "nanoKONTROLPattern")]
+    pub midi_device: String,
-    pub nano_kontrol_pattern: String,
-    #[serde(rename = "ledMode")]
     pub led_mode: LedMode,
 }
 
 #[derive(Debug, Serialize, Deserialize)]
-#[serde(rename_all = "camelCase")]
 pub enum LedMode {
     Default,
     Toggle,
 }
 
-#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
+#[repr(u8)]
-#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
+#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord, IntEnum)]
 pub enum NanoKeys {
     TrackPrev = 58,
     TrackNext = 59,