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import type { KeyDefinition, KeyState } from "../types/index.js";
export class ModelRegistry {
private keyStates: Map<string, KeyState>;
private keyOrder: string[];
constructor(keys: KeyDefinition[]) {
this.keyStates = new Map();
this.keyOrder = [];
this._initConfig(keys, new Map());
}
private _initConfig(keys: KeyDefinition[], existingStates: Map<string, KeyState>): void {
this.keyOrder = keys.map((k) => k.id);
const newStates = new Map<string, KeyState>();
for (const key of keys) {
const existing = existingStates.get(key.id);
if (existing) {
// Preserve existing state but update definition
newStates.set(key.id, { ...existing, definition: key });
} else {
newStates.set(key.id, { definition: key, status: "active" });
}
}
this.keyStates = newStates;
}
getKeys(): KeyState[] {
return this.keyOrder
.map((id) => this.keyStates.get(id))
.filter((state): state is KeyState => state !== undefined);
}
markKeyExhausted(keyId: string, error?: string): void {
const state = this.keyStates.get(keyId);
if (!state) return;
this.keyStates.set(keyId, {
...state,
status: "exhausted",
lastError: error,
exhaustedAt: Date.now(),
});
}
markKeyActive(keyId: string): void {
const state = this.keyStates.get(keyId);
if (!state) return;
const updated: KeyState = {
definition: state.definition,
status: "active",
};
this.keyStates.set(keyId, updated);
}
hasAvailableKey(provider: string): boolean {
for (const state of this.keyStates.values()) {
if (state.definition.provider === provider && state.status === "active") {
return true;
}
}
return false;
}
allKeysExhausted(): boolean {
for (const state of this.keyStates.values()) {
if (state.status === "active") {
return false;
}
}
return true;
}
updateConfig(keys: KeyDefinition[]): void {
this._initConfig(keys, this.keyStates);
}
// Internal: get ordered key states for a specific provider
getOrderedKeysForProvider(provider: string): KeyState[] {
return this.keyOrder
.map((id) => this.keyStates.get(id))
.filter(
(state): state is KeyState => state !== undefined && state.definition.provider === provider,
);
}
}
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