feat(dados-client): adotar react query em leituras do app

src/features/insights/queries.ts

@@ -0,0 +1,49 @@
+import { and, eq } from "drizzle-orm";
+import { z } from "zod";
+import { savedInsights } from "@/db/schema";
+import { db } from "@/shared/lib/db";
+import {
+	type InsightsResponse,
+	InsightsResponseSchema,
+} from "@/shared/lib/schemas/insights";
+
+export const savedInsightsPeriodSchema = z
+	.string()
+	.regex(/^\d{4}-\d{2}$/, "Período inválido (formato esperado: YYYY-MM)");
+
+export type SavedInsightsRecord = {
+	insights: InsightsResponse;
+	modelId: string;
+	createdAt: string;
+};
+
+export async function fetchSavedInsights(
+	userId: string,
+	period: string,
+): Promise<SavedInsightsRecord | null> {
+	const validatedPeriod = savedInsightsPeriodSchema.parse(period);
+
+	const result = await db
+		.select()
+		.from(savedInsights)
+		.where(
+			and(
+				eq(savedInsights.userId, userId),
+				eq(savedInsights.period, validatedPeriod),
+			),
+		)
+		.limit(1);
+
+	if (result.length === 0) {
+		return null;
+	}
+
+	const saved = result[0];
+	const insights = InsightsResponseSchema.parse(JSON.parse(saved.data));
+
+	return {
+		insights,
+		modelId: saved.modelId,
+		createdAt: saved.createdAt.toISOString(),
+	};
+}