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//! Hardcoded model aliases for stable, cross-provider model selection.
//!
//! Aliases map short, memorable names to exact model IDs + providers.
//! Updated per release — we only alias models we've tested with Koda.
//!
//! ## Usage
//!
//! - `/model` picker shows aliases (user-facing)
//! - Sub-agent definitions reference aliases: `model: Some("gemini-flash-lite")`
//! - `resolve("claude-sonnet")` → `Some(ResolvedAlias { model_id, provider })`
//! - `resolve("local")` → `Some(ResolvedAlias { model_id: "auto-detect", provider: LMStudio })`
use crate::config::ProviderType;
/// A hardcoded model alias.
#[derive(Debug, Clone, Copy)]
pub struct ModelAlias {
/// Short stable name (e.g. `"gemini-flash-lite"`).
pub alias: &'static str,
/// Exact model ID sent to the provider API.
pub model_id: &'static str,
/// Which provider serves this model.
pub provider: ProviderType,
}
/// The "local" alias uses auto-detection — model ID is discovered at runtime.
pub const LOCAL_ALIAS: &str = "local";
/// All known aliases. Order determines display order in `/model` picker.
static ALIASES: &[ModelAlias] = &[
// ── Gemini (version-less → auto-resolves to latest) ─
ModelAlias {
alias: "gemini-flash-lite",
model_id: "gemini-flash-lite-latest",
provider: ProviderType::Gemini,
},
ModelAlias {
alias: "gemini-flash",
model_id: "gemini-flash-latest",
provider: ProviderType::Gemini,
},
ModelAlias {
alias: "gemini-pro",
model_id: "gemini-pro-latest",
provider: ProviderType::Gemini,
},
// ── Anthropic ────────────────────────────────────────
ModelAlias {
alias: "claude-haiku",
model_id: "claude-haiku-4-5-20251001",
provider: ProviderType::Anthropic,
},
ModelAlias {
alias: "claude-sonnet",
model_id: "claude-sonnet-4-6",
provider: ProviderType::Anthropic,
},
ModelAlias {
alias: "claude-opus",
model_id: "claude-opus-4-6",
provider: ProviderType::Anthropic,
},
];
/// Resolve an alias to its model ID and provider.
///
/// Returns `None` if `name` is not a known alias (treat as literal model ID).
/// For `"local"`, returns a sentinel — caller must auto-detect via LMStudio API.
pub fn resolve(name: &str) -> Option<ResolvedAlias> {
if name == LOCAL_ALIAS {
return Some(ResolvedAlias {
alias: LOCAL_ALIAS,
model_id: "auto-detect",
provider: ProviderType::LMStudio,
});
}
ALIASES
.iter()
.find(|a| a.alias == name)
.map(|a| ResolvedAlias {
alias: a.alias,
model_id: a.model_id,
provider: a.provider,
})
}
/// Result of resolving an alias.
#[derive(Debug, Clone)]
pub struct ResolvedAlias {
/// The alias that was resolved.
pub alias: &'static str,
/// Exact model ID for the provider API (or `"auto-detect"` for local).
pub model_id: &'static str,
/// Provider that serves this model.
pub provider: ProviderType,
}
impl ResolvedAlias {
/// True if this alias requires runtime auto-detection (LMStudio/Ollama).
pub fn needs_auto_detect(&self) -> bool {
self.model_id == "auto-detect"
}
}
/// All aliases in display order (for the `/model` picker).
pub fn all() -> &'static [ModelAlias] {
ALIASES
}
/// All alias names (for tab completion).
pub fn alias_names() -> Vec<&'static str> {
let mut names: Vec<&str> = ALIASES.iter().map(|a| a.alias).collect();
names.push(LOCAL_ALIAS);
names
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn resolve_known_alias() {
let r = resolve("claude-sonnet").unwrap();
assert_eq!(r.model_id, "claude-sonnet-4-6");
assert_eq!(r.provider, ProviderType::Anthropic);
assert!(!r.needs_auto_detect());
}
#[test]
fn resolve_local_alias() {
let r = resolve("local").unwrap();
assert!(r.needs_auto_detect());
assert_eq!(r.provider, ProviderType::LMStudio);
}
#[test]
fn resolve_unknown_returns_none() {
assert!(resolve("not-a-real-model").is_none());
}
#[test]
fn resolve_literal_model_id_returns_none() {
// Literal model IDs should NOT resolve as aliases
assert!(resolve("claude-sonnet-4-6").is_none());
assert!(resolve("gemini-2.5-pro").is_none());
}
#[test]
fn all_aliases_non_empty() {
assert!(!all().is_empty());
}
#[test]
fn alias_names_includes_local() {
let names = alias_names();
assert!(names.contains(&"local"));
assert!(names.contains(&"gemini-flash-lite"));
}
#[test]
fn no_duplicate_aliases() {
let names = alias_names();
let mut seen = std::collections::HashSet::new();
for name in &names {
assert!(seen.insert(name), "duplicate alias: {name}");
}
}
#[test]
fn no_duplicate_model_ids() {
let mut seen = std::collections::HashSet::new();
for a in all() {
assert!(
seen.insert(a.model_id),
"duplicate model_id: {}",
a.model_id
);
}
}
}