feat: implement idx-cli MVP foundation, provider abstraction, and core quote/history commands

src/config.rs

@@ -0,0 +1,121 @@
+use std::fs;
+use std::path::PathBuf;
+
+use directories::ProjectDirs;
+use serde::Deserialize;
+
+use crate::cli::Cli;
+use crate::error::IdxError;
+use crate::output::OutputFormat;
+
+#[derive(Debug, Clone)]
+pub struct IdxConfig {
+    pub exchange: String,
+    pub output: OutputFormat,
+    pub no_color: bool,
+    pub quote_ttl: u64,
+    pub fundamental_ttl: u64,
+}
+
+#[derive(Debug, Deserialize, Default)]
+struct FileConfig {
+    general: Option<FileGeneral>,
+    cache: Option<FileCache>,
+}
+
+#[derive(Debug, Deserialize, Default)]
+struct FileGeneral {
+    exchange: Option<String>,
+    output: Option<OutputFormat>,
+    color: Option<bool>,
+}
+
+#[derive(Debug, Deserialize, Default)]
+struct FileCache {
+    quote_ttl: Option<u64>,
+    fundamental_ttl: Option<u64>,
+}
+
+impl Default for IdxConfig {
+    fn default() -> Self {
+        Self {
+            exchange: "JK".to_string(),
+            output: OutputFormat::Table,
+            no_color: false,
+            quote_ttl: 300,
+            fundamental_ttl: 3600,
+        }
+    }
+}
+
+impl IdxConfig {
+    pub fn load_with_cli(cli: &Cli) -> Result<Self, IdxError> {
+        let mut cfg = Self::load()?;
+
+        if let Ok(exchange) = std::env::var("IDX_EXCHANGE") {
+            cfg.exchange = exchange;
+        }
+        if let Ok(output) = std::env::var("IDX_OUTPUT") {
+            cfg.output = if output.eq_ignore_ascii_case("json") {
+                OutputFormat::Json
+            } else {
+                OutputFormat::Table
+            };
+        }
+        if let Ok(no_color) = std::env::var("IDX_NO_COLOR") {
+            cfg.no_color = no_color == "1" || no_color.eq_ignore_ascii_case("true");
+        }
+
+        cfg.output = cli.output;
+        cfg.no_color = cfg.no_color || cli.no_color;
+
+        Ok(cfg)
+    }
+
+    pub fn load() -> Result<Self, IdxError> {
+        let mut cfg = Self::default();
+        let path = config_path()?;
+        if path.exists() {
+            let raw = fs::read_to_string(&path).map_err(|e| IdxError::Io(e.to_string()))?;
+            let parsed: FileConfig = toml::from_str(&raw).map_err(|e| IdxError::ConfigError(e.to_string()))?;
+            if let Some(general) = parsed.general {
+                if let Some(exchange) = general.exchange {
+                    cfg.exchange = exchange;
+                }
+                if let Some(output) = general.output {
+                    cfg.output = output;
+                }
+                if let Some(color) = general.color {
+                    cfg.no_color = !color;
+                }
+            }
+            if let Some(cache) = parsed.cache {
+                if let Some(v) = cache.quote_ttl {
+                    cfg.quote_ttl = v;
+                }
+                if let Some(v) = cache.fundamental_ttl {
+                    cfg.fundamental_ttl = v;
+                }
+            }
+        }
+        Ok(cfg)
+    }
+}
+
+pub fn config_path() -> Result<PathBuf, IdxError> {
+    ProjectDirs::from("com", "idx", "idx")
+        .map(|d| d.config_dir().join("config.toml"))
+        .ok_or_else(|| IdxError::ConfigError("unable to resolve config dir".to_string()))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::IdxConfig;
+
+    #[test]
+    fn default_values_are_sane() {
+        let cfg = IdxConfig::default();
+        assert_eq!(cfg.exchange, "JK");
+        assert_eq!(cfg.quote_ttl, 300);
+    }
+}