use crate::{settings_store::parse_json_with_comments, SettingsAssets};use anyhow::{anyhow, Context, Result};use collections::BTreeMap;use gpui::{Action, AppContext, KeyBinding, SharedString};use schemars::{    gen::{SchemaGenerator, SchemaSettings},    schema::{InstanceType, Schema, SchemaObject, SingleOrVec, SubschemaValidation},    JsonSchema,};use serde::Deserialize;use serde_json::Value;use util::{asset_str, ResultExt}; #[derive(Debug, Deserialize, Default, Clone, JsonSchema)]#[serde(transparent)]pub struct KeymapFile(Vec<KeymapBlock>); #[derive(Debug, Deserialize, Default, Clone, JsonSchema)]pub struct KeymapBlock {    #[serde(default)]    context: Option<String>,    #[serde(default)]    use_key_equivalents: Option<bool>,    bindings: BTreeMap<String, KeymapAction>,} impl KeymapBlock {    pub fn context(&self) -> Option<&str> {        self.context.as_deref()    }     pub fn bindings(&self) -> &BTreeMap<String, KeymapAction> {        &self.bindings    }} #[derive(Debug, Deserialize, Default, Clone)]#[serde(transparent)]pub struct KeymapAction(Value); impl std::fmt::Display for KeymapAction {    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {        match &self.0 {            Value::String(s) => write!(f, "{}", s),            Value::Array(arr) => {                let strings: Vec<String> = arr.iter().map(|v| v.to_string()).collect();                write!(f, "{}", strings.join(", "))            }            _ => write!(f, "{}", self.0),        }    }} impl JsonSchema for KeymapAction {    fn schema_name() -> String {        "KeymapAction".into()    }     fn json_schema(_: &mut SchemaGenerator) -> Schema {        Schema::Bool(true)    }} impl KeymapFile {    pub fn load_asset(asset_path: &str, cx: &mut AppContext) -> Result<()> {        let content = asset_str::<SettingsAssets>(asset_path);         Self::parse(content.as_ref())?.add_to_cx(cx)    }     pub fn parse(content: &str) -> Result<Self> {        if content.is_empty() {            return Ok(Self::default());        }        parse_json_with_comments::<Self>(content)    }     pub fn add_to_cx(self, cx: &mut AppContext) -> Result<()> {        let key_equivalents = crate::key_equivalents::get_key_equivalents(&cx.keyboard_layout());         for KeymapBlock {            context,            use_key_equivalents,            bindings,        } in self.0        {            let bindings = bindings                .into_iter()                .filter_map(|(keystroke, action)| {                    let action = action.0;                     // This is a workaround for a limitation in serde: serde-rs/json#497                    // We want to deserialize the action data as a `RawValue` so that we can                    // deserialize the action itself dynamically directly from the JSON                    // string. But `RawValue` currently does not work inside of an untagged enum.                    match action {                        Value::Array(items) => {                            let Ok([name, data]): Result<[serde_json::Value; 2], _> =                                items.try_into()                            else {                                return Some(Err(anyhow!("Expected array of length 2")));                            };                            let serde_json::Value::String(name) = name else {                                return Some(Err(anyhow!(                                    "Expected first item in array to be a string."                                )));                            };                            cx.build_action(&name, Some(data))                        }                        Value::String(name) => cx.build_action(&name, None),                        Value::Null => Ok(no_action()),                        _ => {                            return Some(Err(anyhow!("Expected two-element array, got {action:?}")))                        }                    }                    .with_context(|| {                        format!(                            "invalid binding value for keystroke {keystroke}, context {context:?}"                        )                    })                    .log_err()                    .map(|action| {                        KeyBinding::load(                            &keystroke,                            action,                            context.as_deref(),                            if use_key_equivalents.unwrap_or_default() {                                key_equivalents.as_ref()                            } else {                                None                            },                        )                    })                })                .collect::<Result<Vec<_>>>()?;             cx.bind_keys(bindings);        }        Ok(())    }     pub fn generate_json_schema(action_names: &[SharedString]) -> serde_json::Value {        let mut root_schema = SchemaSettings::draft07()            .with(|settings| settings.option_add_null_type = false)            .into_generator()            .into_root_schema_for::<KeymapFile>();         let action_schema = Schema::Object(SchemaObject {            subschemas: Some(Box::new(SubschemaValidation {                one_of: Some(vec![                    Schema::Object(SchemaObject {                        instance_type: Some(SingleOrVec::Single(Box::new(InstanceType::String))),                        enum_values: Some(                            action_names                                .iter()                                .map(|name| Value::String(name.to_string()))                                .collect(),                        ),                        ..Default::default()                    }),                    Schema::Object(SchemaObject {                        instance_type: Some(SingleOrVec::Single(Box::new(InstanceType::Array))),                        ..Default::default()                    }),                    Schema::Object(SchemaObject {                        instance_type: Some(SingleOrVec::Single(Box::new(InstanceType::Null))),                        ..Default::default()                    }),                ]),                ..Default::default()            })),            ..Default::default()        });         root_schema            .definitions            .insert("KeymapAction".to_owned(), action_schema);         serde_json::to_value(root_schema).unwrap()    }     pub fn blocks(&self) -> &[KeymapBlock] {        &self.0    }} fn no_action() -> Box<dyn gpui::Action> {    gpui::NoAction.boxed_clone()} #[cfg(test)]mod tests {    use crate::KeymapFile;     #[test]    fn can_deserialize_keymap_with_trailing_comma() {        let json = indoc::indoc! {"[              // Standard macOS bindings              {                \"bindings\": {                  \"up\": \"menu::SelectPrev\",                },              },            ]                  "         };        KeymapFile::parse(json).unwrap();    }}