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import type { ThinkingLevel } from "@earendil-works/pi-agent-core";import { type Api, type KnownProvider, type Model, modelsAreEqual } from "@earendil-works/pi-ai";import chalk from "chalk";import { minimatch } from "minimatch";import { isValidThinkingLevel } from "../cli/args.ts";import { DEFAULT_THINKING_LEVEL } from "./defaults.ts";import type { ModelRegistry } from "./model-registry.ts";
/** Default model IDs for each known provider */export const defaultModelPerProvider: Record<KnownProvider, string> = { "amazon-bedrock": "us.anthropic.claude-opus-4-6-v1", anthropic: "claude-opus-4-7", openai: "gpt-5.4", "azure-openai-responses": "gpt-5.4", "openai-codex": "gpt-5.5", deepseek: "deepseek-v4-pro", google: "gemini-3.1-pro-preview", "google-vertex": "gemini-3.1-pro-preview", "github-copilot": "gpt-5.4", openrouter: "moonshotai/kimi-k2.6", "vercel-ai-gateway": "zai/glm-5.1", xai: "grok-4.20-0309-reasoning", groq: "openai/gpt-oss-120b", cerebras: "zai-glm-4.7", zai: "glm-5.1", mistral: "devstral-medium-latest", minimax: "MiniMax-M2.7", "minimax-cn": "MiniMax-M2.7", moonshotai: "kimi-k2.6", "moonshotai-cn": "kimi-k2.6", huggingface: "moonshotai/Kimi-K2.6", fireworks: "accounts/fireworks/models/kimi-k2p6", together: "moonshotai/Kimi-K2.6", opencode: "kimi-k2.6", "opencode-go": "kimi-k2.6", "kimi-coding": "kimi-for-coding", "cloudflare-workers-ai": "@cf/moonshotai/kimi-k2.6", "cloudflare-ai-gateway": "workers-ai/@cf/moonshotai/kimi-k2.6", xiaomi: "mimo-v2.5-pro", "xiaomi-token-plan-cn": "mimo-v2.5-pro", "xiaomi-token-plan-ams": "mimo-v2.5-pro", "xiaomi-token-plan-sgp": "mimo-v2.5-pro",};
export interface ScopedModel { model: Model<Api>; /** Thinking level if explicitly specified in pattern (e.g., "model:high"), undefined otherwise */ thinkingLevel?: ThinkingLevel;}
/** * Helper to check if a model ID looks like an alias (no date suffix) * Dates are typically in format: -20241022 or -20250929 */function isAlias(id: string): boolean { // Check if ID ends with -latest if (id.endsWith("-latest")) return true;
// Check if ID ends with a date pattern (-YYYYMMDD) const datePattern = /-\d{8}$/; return !datePattern.test(id);}
/** * Find an exact model reference match. * Supports either a bare model id or a canonical provider/modelId reference. * When matching by bare id, ambiguous matches across providers are rejected. */export function findExactModelReferenceMatch( modelReference: string, availableModels: Model<Api>[],): Model<Api> | undefined { const trimmedReference = modelReference.trim(); if (!trimmedReference) { return undefined; }
const normalizedReference = trimmedReference.toLowerCase();
const canonicalMatches = availableModels.filter( (model) => `${model.provider}/${model.id}`.toLowerCase() === normalizedReference, ); if (canonicalMatches.length === 1) { return canonicalMatches[0]; } if (canonicalMatches.length > 1) { return undefined; }
const slashIndex = trimmedReference.indexOf("/"); if (slashIndex !== -1) { const provider = trimmedReference.substring(0, slashIndex).trim(); const modelId = trimmedReference.substring(slashIndex + 1).trim(); if (provider && modelId) { const providerMatches = availableModels.filter( (model) => model.provider.toLowerCase() === provider.toLowerCase() && model.id.toLowerCase() === modelId.toLowerCase(), ); if (providerMatches.length === 1) { return providerMatches[0]; } if (providerMatches.length > 1) { return undefined; } } }
const idMatches = availableModels.filter((model) => model.id.toLowerCase() === normalizedReference); return idMatches.length === 1 ? idMatches[0] : undefined;}
/** * Try to match a pattern to a model from the available models list. * Returns the matched model or undefined if no match found. */function tryMatchModel(modelPattern: string, availableModels: Model<Api>[]): Model<Api> | undefined { const exactMatch = findExactModelReferenceMatch(modelPattern, availableModels); if (exactMatch) { return exactMatch; }
// No exact match - fall back to partial matching const matches = availableModels.filter( (m) => m.id.toLowerCase().includes(modelPattern.toLowerCase()) || m.name?.toLowerCase().includes(modelPattern.toLowerCase()), );
if (matches.length === 0) { return undefined; }
// Separate into aliases and dated versions const aliases = matches.filter((m) => isAlias(m.id)); const datedVersions = matches.filter((m) => !isAlias(m.id));
if (aliases.length > 0) { // Prefer alias - if multiple aliases, pick the one that sorts highest aliases.sort((a, b) => b.id.localeCompare(a.id)); return aliases[0]; } else { // No alias found, pick latest dated version datedVersions.sort((a, b) => b.id.localeCompare(a.id)); return datedVersions[0]; }}
export interface ParsedModelResult { model: Model<Api> | undefined; /** Thinking level if explicitly specified in pattern, undefined otherwise */ thinkingLevel?: ThinkingLevel; warning: string | undefined;}
function buildFallbackModel(provider: string, modelId: string, availableModels: Model<Api>[]): Model<Api> | undefined { const providerModels = availableModels.filter((m) => m.provider === provider); if (providerModels.length === 0) return undefined;
const defaultId = defaultModelPerProvider[provider as KnownProvider]; const baseModel = defaultId ? (providerModels.find((m) => m.id === defaultId) ?? providerModels[0]) : providerModels[0];
return { ...baseModel, id: modelId, name: modelId, };}
/** * Parse a pattern to extract model and thinking level. * Handles models with colons in their IDs (e.g., OpenRouter's :exacto suffix). * * Algorithm: * 1. Try to match full pattern as a model * 2. If found, return it with "off" thinking level * 3. If not found and has colons, split on last colon: * - If suffix is valid thinking level, use it and recurse on prefix * - If suffix is invalid, warn and recurse on prefix with "off" * * @internal Exported for testing */export function parseModelPattern( pattern: string, availableModels: Model<Api>[], options?: { allowInvalidThinkingLevelFallback?: boolean },): ParsedModelResult { // Try exact match first const exactMatch = tryMatchModel(pattern, availableModels); if (exactMatch) { return { model: exactMatch, thinkingLevel: undefined, warning: undefined }; }
// No match - try splitting on last colon if present const lastColonIndex = pattern.lastIndexOf(":"); if (lastColonIndex === -1) { // No colons, pattern simply doesn't match any model return { model: undefined, thinkingLevel: undefined, warning: undefined }; }
const prefix = pattern.substring(0, lastColonIndex); const suffix = pattern.substring(lastColonIndex + 1);
if (isValidThinkingLevel(suffix)) { // Valid thinking level - recurse on prefix and use this level const result = parseModelPattern(prefix, availableModels, options); if (result.model) { // Only use this thinking level if no warning from inner recursion return { model: result.model, thinkingLevel: result.warning ? undefined : suffix, warning: result.warning, }; } return result; } else { // Invalid suffix const allowFallback = options?.allowInvalidThinkingLevelFallback ?? true; if (!allowFallback) { // In strict mode (CLI --model parsing), treat it as part of the model id and fail. // This avoids accidentally resolving to a different model. return { model: undefined, thinkingLevel: undefined, warning: undefined }; }
// Scope mode: recurse on prefix and warn const result = parseModelPattern(prefix, availableModels, options); if (result.model) { return { model: result.model, thinkingLevel: undefined, warning: `Invalid thinking level "${suffix}" in pattern "${pattern}". Using default instead.`, }; } return result; }}
/** * Resolve model patterns to actual Model objects with optional thinking levels * Format: "pattern:level" where :level is optional * For each pattern, finds all matching models and picks the best version: * 1. Prefer alias (e.g., claude-sonnet-4-5) over dated versions (claude-sonnet-4-5-20250929) * 2. If no alias, pick the latest dated version * * Supports models with colons in their IDs (e.g., OpenRouter's model:exacto). * The algorithm tries to match the full pattern first, then progressively * strips colon-suffixes to find a match. */export async function resolveModelScope(patterns: string[], modelRegistry: ModelRegistry): Promise<ScopedModel[]> { const availableModels = await modelRegistry.getAvailable(); const scopedModels: ScopedModel[] = [];
for (const pattern of patterns) { // Check if pattern contains glob characters if (pattern.includes("*") || pattern.includes("?") || pattern.includes("[")) { // Extract optional thinking level suffix (e.g., "provider/*:high") const colonIdx = pattern.lastIndexOf(":"); let globPattern = pattern; let thinkingLevel: ThinkingLevel | undefined;
if (colonIdx !== -1) { const suffix = pattern.substring(colonIdx + 1); if (isValidThinkingLevel(suffix)) { thinkingLevel = suffix; globPattern = pattern.substring(0, colonIdx); } }
// Match against "provider/modelId" format OR just model ID // This allows "*sonnet*" to match without requiring "anthropic/*sonnet*" const matchingModels = availableModels.filter((m) => { const fullId = `${m.provider}/${m.id}`; return minimatch(fullId, globPattern, { nocase: true }) || minimatch(m.id, globPattern, { nocase: true }); });
if (matchingModels.length === 0) { console.warn(chalk.yellow(`Warning: No models match pattern "${pattern}"`)); continue; }
for (const model of matchingModels) { if (!scopedModels.find((sm) => modelsAreEqual(sm.model, model))) { scopedModels.push({ model, thinkingLevel }); } } continue; }
const { model, thinkingLevel, warning } = parseModelPattern(pattern, availableModels);
if (warning) { console.warn(chalk.yellow(`Warning: ${warning}`)); }
if (!model) { console.warn(chalk.yellow(`Warning: No models match pattern "${pattern}"`)); continue; }
// Avoid duplicates if (!scopedModels.find((sm) => modelsAreEqual(sm.model, model))) { scopedModels.push({ model, thinkingLevel }); } }
return scopedModels;}
export interface ResolveCliModelResult { model: Model<Api> | undefined; thinkingLevel?: ThinkingLevel; warning: string | undefined; /** * Error message suitable for CLI display. * When set, model will be undefined. */ error: string | undefined;}
/** * Resolve a single model from CLI flags. * * Supports: * - --provider <provider> --model <pattern> * - --model <provider>/<pattern> * - Fuzzy matching (same rules as model scoping: exact id, then partial id/name) * * Note: This does not apply the thinking level by itself, but it may *parse* and * return a thinking level from "<pattern>:<thinking>" so the caller can apply it. */export function resolveCliModel(options: { cliProvider?: string; cliModel?: string; modelRegistry: ModelRegistry;}): ResolveCliModelResult { const { cliProvider, cliModel, modelRegistry } = options;
if (!cliModel) { return { model: undefined, warning: undefined, error: undefined }; }
// Important: use *all* models here, not just models with pre-configured auth. // This allows "--api-key" to be used for first-time setup. const availableModels = modelRegistry.getAll(); if (availableModels.length === 0) { return { model: undefined, warning: undefined, error: "No models available. Check your installation or add models to models.json.", }; }
// Build canonical provider lookup (case-insensitive) const providerMap = new Map<string, string>(); for (const m of availableModels) { providerMap.set(m.provider.toLowerCase(), m.provider); }
let provider = cliProvider ? providerMap.get(cliProvider.toLowerCase()) : undefined; if (cliProvider && !provider) { return { model: undefined, warning: undefined, error: `Unknown provider "${cliProvider}". Use --list-models to see available providers/models.`, }; }
// If no explicit --provider, try to interpret "provider/model" format first. // When the prefix before the first slash matches a known provider, prefer that // interpretation over matching models whose IDs literally contain slashes // (e.g. "zai/glm-5" should resolve to provider=zai, model=glm-5, not to a // vercel-ai-gateway model with id "zai/glm-5"). let pattern = cliModel; let inferredProvider = false;
if (!provider) { const slashIndex = cliModel.indexOf("/"); if (slashIndex !== -1) { const maybeProvider = cliModel.substring(0, slashIndex); const canonical = providerMap.get(maybeProvider.toLowerCase()); if (canonical) { provider = canonical; pattern = cliModel.substring(slashIndex + 1); inferredProvider = true; } } }
// If no provider was inferred from the slash, try exact matches without provider inference. // This handles models whose IDs naturally contain slashes (e.g. OpenRouter-style IDs). if (!provider) { const lower = cliModel.toLowerCase(); const exact = availableModels.find( (m) => m.id.toLowerCase() === lower || `${m.provider}/${m.id}`.toLowerCase() === lower, ); if (exact) { return { model: exact, warning: undefined, thinkingLevel: undefined, error: undefined }; } }
if (cliProvider && provider) { // If both were provided, tolerate --model <provider>/<pattern> by stripping the provider prefix const prefix = `${provider}/`; if (cliModel.toLowerCase().startsWith(prefix.toLowerCase())) { pattern = cliModel.substring(prefix.length); } }
const candidates = provider ? availableModels.filter((m) => m.provider === provider) : availableModels; const { model, thinkingLevel, warning } = parseModelPattern(pattern, candidates, { allowInvalidThinkingLevelFallback: false, });
if (model) { return { model, thinkingLevel, warning, error: undefined }; }
// If we inferred a provider from the slash but found no match within that provider, // fall back to matching the full input as a raw model id across all models. // This handles OpenRouter-style IDs like "openai/gpt-4o:extended" where "openai" // looks like a provider but the full string is actually a model id on openrouter. if (inferredProvider) { const lower = cliModel.toLowerCase(); const exact = availableModels.find( (m) => m.id.toLowerCase() === lower || `${m.provider}/${m.id}`.toLowerCase() === lower, ); if (exact) { return { model: exact, warning: undefined, thinkingLevel: undefined, error: undefined }; } // Also try parseModelPattern on the full input against all models const fallback = parseModelPattern(cliModel, availableModels, { allowInvalidThinkingLevelFallback: false, }); if (fallback.model) { return { model: fallback.model, thinkingLevel: fallback.thinkingLevel, warning: fallback.warning, error: undefined, }; } }
if (provider) { const fallbackModel = buildFallbackModel(provider, pattern, availableModels); if (fallbackModel) { const fallbackWarning = warning ? `${warning} Model "${pattern}" not found for provider "${provider}". Using custom model id.` : `Model "${pattern}" not found for provider "${provider}". Using custom model id.`; return { model: fallbackModel, thinkingLevel: undefined, warning: fallbackWarning, error: undefined }; } }
const display = provider ? `${provider}/${pattern}` : cliModel; return { model: undefined, thinkingLevel: undefined, warning, error: `Model "${display}" not found. Use --list-models to see available models.`, };}
export interface InitialModelResult { model: Model<Api> | undefined; thinkingLevel: ThinkingLevel; fallbackMessage: string | undefined;}
/** * Find the initial model to use based on priority: * 1. CLI args (provider + model) * 2. First model from scoped models (if not continuing/resuming) * 3. Restored from session (if continuing/resuming) * 4. Saved default from settings * 5. First available model with valid API key */export async function findInitialModel(options: { cliProvider?: string; cliModel?: string; scopedModels: ScopedModel[]; isContinuing: boolean; defaultProvider?: string; defaultModelId?: string; defaultThinkingLevel?: ThinkingLevel; modelRegistry: ModelRegistry;}): Promise<InitialModelResult> { const { cliProvider, cliModel, scopedModels, isContinuing, defaultProvider, defaultModelId, defaultThinkingLevel, modelRegistry, } = options;
let model: Model<Api> | undefined; let thinkingLevel: ThinkingLevel = DEFAULT_THINKING_LEVEL;
// 1. CLI args take priority if (cliProvider && cliModel) { const resolved = resolveCliModel({ cliProvider, cliModel, modelRegistry, }); if (resolved.error) { console.error(chalk.red(resolved.error)); process.exit(1); } if (resolved.model) { return { model: resolved.model, thinkingLevel: DEFAULT_THINKING_LEVEL, fallbackMessage: undefined }; } }
// 2. Use first model from scoped models (skip if continuing/resuming) if (scopedModels.length > 0 && !isContinuing) { return { model: scopedModels[0].model, thinkingLevel: scopedModels[0].thinkingLevel ?? defaultThinkingLevel ?? DEFAULT_THINKING_LEVEL, fallbackMessage: undefined, }; }
// 3. Try saved default from settings if (defaultProvider && defaultModelId) { const found = modelRegistry.find(defaultProvider, defaultModelId); if (found) { model = found; if (defaultThinkingLevel) { thinkingLevel = defaultThinkingLevel; } return { model, thinkingLevel, fallbackMessage: undefined }; } }
// 4. Try first available model with valid API key const availableModels = await modelRegistry.getAvailable();
if (availableModels.length > 0) { // Try to find a default model from known providers for (const provider of Object.keys(defaultModelPerProvider) as KnownProvider[]) { const defaultId = defaultModelPerProvider[provider]; const match = availableModels.find((m) => m.provider === provider && m.id === defaultId); if (match) { return { model: match, thinkingLevel: DEFAULT_THINKING_LEVEL, fallbackMessage: undefined }; } }
// If no default found, use first available return { model: availableModels[0], thinkingLevel: DEFAULT_THINKING_LEVEL, fallbackMessage: undefined }; }
// 5. No model found return { model: undefined, thinkingLevel: DEFAULT_THINKING_LEVEL, fallbackMessage: undefined };}
/** * Restore model from session, with fallback to available models */export async function restoreModelFromSession( savedProvider: string, savedModelId: string, currentModel: Model<Api> | undefined, shouldPrintMessages: boolean, modelRegistry: ModelRegistry,): Promise<{ model: Model<Api> | undefined; fallbackMessage: string | undefined }> { const restoredModel = modelRegistry.find(savedProvider, savedModelId);
// Check if restored model exists and still has auth configured const hasConfiguredAuth = restoredModel ? modelRegistry.hasConfiguredAuth(restoredModel) : false;
if (restoredModel && hasConfiguredAuth) { if (shouldPrintMessages) { console.log(chalk.dim(`Restored model: ${savedProvider}/${savedModelId}`)); } return { model: restoredModel, fallbackMessage: undefined }; }
// Model not found or no API key - fall back const reason = !restoredModel ? "model no longer exists" : "no auth configured";
if (shouldPrintMessages) { console.error(chalk.yellow(`Warning: Could not restore model ${savedProvider}/${savedModelId} (${reason}).`)); }
// If we already have a model, use it as fallback if (currentModel) { if (shouldPrintMessages) { console.log(chalk.dim(`Falling back to: ${currentModel.provider}/${currentModel.id}`)); } return { model: currentModel, fallbackMessage: `Could not restore model ${savedProvider}/${savedModelId} (${reason}). Using ${currentModel.provider}/${currentModel.id}.`, }; }
// Try to find any available model const availableModels = await modelRegistry.getAvailable();
if (availableModels.length > 0) { // Try to find a default model from known providers let fallbackModel: Model<Api> | undefined; for (const provider of Object.keys(defaultModelPerProvider) as KnownProvider[]) { const defaultId = defaultModelPerProvider[provider]; const match = availableModels.find((m) => m.provider === provider && m.id === defaultId); if (match) { fallbackModel = match; break; } }
// If no default found, use first available if (!fallbackModel) { fallbackModel = availableModels[0]; }
if (shouldPrintMessages) { console.log(chalk.dim(`Falling back to: ${fallbackModel.provider}/${fallbackModel.id}`)); }
return { model: fallbackModel, fallbackMessage: `Could not restore model ${savedProvider}/${savedModelId} (${reason}). Using ${fallbackModel.provider}/${fallbackModel.id}.`, }; }
// No models available return { model: undefined, fallbackMessage: undefined };}