feat(coding): complete PI conversation UI

src/lib/coding-model-options.ts

@@ -0,0 +1,58 @@
+import type { ProviderAccount, ProviderVendorInfo } from '@/lib/providers';
+import type { ProductModelRef } from '@/types/coding-conversation';
+
+export interface CodingModelOption {
+  key: string;
+  accountId: string;
+  modelId: string;
+  label: string;
+}
+
+export function codingModelKey(model: Pick<ProductModelRef, 'accountId' | 'modelId'>): string {
+  return JSON.stringify([model.accountId, model.modelId]);
+}
+
+export function parseCodingModelKey(key: string): Pick<ProductModelRef, 'accountId' | 'modelId'> | null {
+  try {
+    const value = JSON.parse(key) as unknown;
+    if (!Array.isArray(value) || value.length !== 2) return null;
+    const [accountId, modelId] = value;
+    if (typeof accountId !== 'string' || !accountId.trim()
+      || typeof modelId !== 'string' || !modelId.trim()) return null;
+    return { accountId: accountId.trim(), modelId: modelId.trim() };
+  } catch {
+    return null;
+  }
+}
+
+export function buildCodingModelOptions(
+  accounts: ProviderAccount[],
+  vendors: ProviderVendorInfo[],
+): CodingModelOption[] {
+  const vendorNames = new Map(vendors.map((vendor) => [vendor.id, vendor.name]));
+  const seen = new Set<string>();
+  const options: CodingModelOption[] = [];
+  for (const account of accounts) {
+    if (!account.enabled) continue;
+    const modelIds = [
+      account.model,
+      ...(account.fallbackModels ?? []),
+      ...(account.metadata?.customModels ?? []),
+    ];
+    for (const value of modelIds) {
+      const modelId = value?.trim();
+      if (!modelId) continue;
+      const key = codingModelKey({ accountId: account.id, modelId });
+      if (seen.has(key)) continue;
+      seen.add(key);
+      const vendor = vendorNames.get(account.vendorId);
+      options.push({
+        key,
+        accountId: account.id,
+        modelId,
+        label: `${account.label}${vendor && vendor !== account.label ? ` · ${vendor}` : ''} / ${modelId}`,
+      });
+    }
+  }
+  return options;
+}