refactor: Move feed object into models

1 files changed, 119 insertions, 0 deletions

diff --git a/packages/trpc/models/feeds.ts b/packages/trpc/models/feeds.ts
new file mode 100644
index 00000000..eab1ad65
--- /dev/null
+++ b/packages/trpc/models/feeds.ts
@@ -0,0 +1,119 @@
+import { TRPCError } from "@trpc/server";
+import { and, eq } from "drizzle-orm";
+import { z } from "zod";
+
+import { rssFeedsTable } from "@karakeep/db/schema";
+import {
+  zFeedSchema,
+  zNewFeedSchema,
+  zUpdateFeedSchema,
+} from "@karakeep/shared/types/feeds";
+
+import { AuthedContext } from "..";
+import { PrivacyAware } from "./privacy";
+
+export class Feed implements PrivacyAware {
+  constructor(
+    protected ctx: AuthedContext,
+    private feed: typeof rssFeedsTable.$inferSelect,
+  ) {}
+
+  static async fromId(ctx: AuthedContext, id: string): Promise<Feed> {
+    const feed = await ctx.db.query.rssFeedsTable.findFirst({
+      where: eq(rssFeedsTable.id, id),
+    });
+
+    if (!feed) {
+      throw new TRPCError({
+        code: "NOT_FOUND",
+        message: "Feed not found",
+      });
+    }
+
+    // If it exists but belongs to another user, throw forbidden error
+    if (feed.userId !== ctx.user.id) {
+      throw new TRPCError({
+        code: "FORBIDDEN",
+        message: "User is not allowed to access resource",
+      });
+    }
+
+    return new Feed(ctx, feed);
+  }
+
+  static async create(
+    ctx: AuthedContext,
+    input: z.infer<typeof zNewFeedSchema>,
+  ): Promise<Feed> {
+    const [result] = await ctx.db
+      .insert(rssFeedsTable)
+      .values({
+        name: input.name,
+        url: input.url,
+        userId: ctx.user.id,
+        enabled: input.enabled,
+      })
+      .returning();
+
+    return new Feed(ctx, result);
+  }
+
+  static async getAll(ctx: AuthedContext): Promise<Feed[]> {
+    const feeds = await ctx.db.query.rssFeedsTable.findMany({
+      where: eq(rssFeedsTable.userId, ctx.user.id),
+    });
+
+    return feeds.map((f) => new Feed(ctx, f));
+  }
+
+  ensureCanAccess(ctx: AuthedContext): void {
+    if (this.feed.userId !== ctx.user.id) {
+      throw new TRPCError({
+        code: "FORBIDDEN",
+        message: "User is not allowed to access resource",
+      });
+    }
+  }
+
+  async delete(): Promise<void> {
+    const res = await this.ctx.db
+      .delete(rssFeedsTable)
+      .where(
+        and(
+          eq(rssFeedsTable.id, this.feed.id),
+          eq(rssFeedsTable.userId, this.ctx.user.id),
+        ),
+      );
+
+    if (res.changes === 0) {
+      throw new TRPCError({ code: "NOT_FOUND" });
+    }
+  }
+
+  async update(input: z.infer<typeof zUpdateFeedSchema>): Promise<void> {
+    const result = await this.ctx.db
+      .update(rssFeedsTable)
+      .set({
+        name: input.name,
+        url: input.url,
+        enabled: input.enabled,
+      })
+      .where(
+        and(
+          eq(rssFeedsTable.id, this.feed.id),
+          eq(rssFeedsTable.userId, this.ctx.user.id),
+        ),
+      )
+      .returning();
+
+    if (result.length === 0) {
+      throw new TRPCError({ code: "NOT_FOUND" });
+    }
+
+    this.feed = result[0];
+  }
+
+  asPublicFeed(): z.infer<typeof zFeedSchema> {
+    return this.feed;
+  }
+}