Build a Finance SaaS Platform -14（Transaction API）

日常练习
Word count: 2k   |   Reading time≈ 12 min

Create transaction API and Hook API

Add Transaction API

Add app/api/[[…route]]/transactions.ts:

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import { z } from "zod"
import { Hono } from "hono";
import { parse, subDays } from "date-fns";
import { zValidator } from "@hono/zod-validator";
import { createId } from "@paralleldrive/cuid2";
import { clerkMiddleware, getAuth } from "@hono/clerk-auth";

import { db } from "@/db/drizzle";
import { categories,accounts, transactions, insertTransactionSchema } from "@/db/schema";
import { gte,lte,desc, and, eq, inArray,sql } from "drizzle-orm";

const app = new Hono()
  .get("/", 
    zValidator("query", z.object({
      from: z.string().optional(),
      to: z.string().optional(),
      accountId: z.string().optional(),
    })),
    clerkMiddleware(), async (c) => {
    const auth = getAuth(c);
    const { from, to, accountId } = c.req.valid("query");

    if( !auth?.userId ) {
      return c.json({ error:"Unauthorized!"}, 401);
    }

    const defaultTo = new Date();
    const defaultFrom = subDays(defaultTo, 30);

    const startDate = from 
      ? parse(from, "yyyy-MM-dd", new Date() )
      : defaultFrom;
    
    const endDate = to
      ? parse(to, "yyyy-MM-dd", new Date())
      : defaultTo;
    
    const data = await db.select({
      id: transactions.id,
      date: transactions.date,
      category: categories.name,
      categoryId: transactions.categoryId,
      payee : transactions.payee,
      amount: transactions.amount,
      notes: transactions.notes,
      account: accounts.name,
      accountId: transactions.accountId,
    }).from(transactions)
    .innerJoin(accounts, eq(transactions.accountId, accounts.id))
    .leftJoin(categories, eq(transactions.categoryId, categories.id))
    .where(
      and(
        accountId ? eq(transactions.accountId, accountId) : undefined,
        eq(accounts.userId, auth.userId),
        gte(transactions.date, startDate),
        lte(transactions.date, endDate),
      )
    )
    .orderBy(desc(transactions.date));

    return c.json({ data });
  })
  .get(
    "/:id",
    zValidator("param",z.object({ 
      id: z.string().optional(),
    })),
    clerkMiddleware(),
    async (c) => {
      const auth = getAuth(c);
      const { id } = c.req.valid("param");

      if (!id) {
        return c.json({ error: "Missing id!" }, 400);
      }

      if (!auth?.userId) {
        return c.json({ error: "Unauthorized!" }, 401);
      }

      const [data] = await db
        .select({
          id: transactions.id,
          date: transactions.date,
          categoryId: transactions.categoryId,
          payee : transactions.payee,
          amount: transactions.amount,
          notes: transactions.notes,
          accountId: transactions.accountId,
        })
        .from(transactions)
        .innerJoin(accounts, eq(transactions.accountId, accounts.id))
        .where(
          and(
            eq(transactions.id, id),
            eq(accounts.userId, auth.userId),
        ),
      );

      if (!data) {
        return c.json({ error: "Not Found!"}, 404);
      };
  
      return c.json({ data });
    }
  )
  .post(
    "/",
    clerkMiddleware(), 
    zValidator('json',insertTransactionSchema.omit({
      id: true,
    })),
    async(c) => {
      const auth = getAuth(c);
      const values = c.req.valid("json");

      if(!auth?.userId){
        return c.json({ error:"Unauthorized!"}, 401);
      }

      const data = await db.insert(transactions).values({
        id: createId(),
        ...values,
      }).returning();

      return c.json({ data });
    })
  .post(
    "/bulk-delete",
    clerkMiddleware(),
    zValidator(
      "json",
      z.object({
        ids: z.array(z.string())
      }),
    ),
    async (c) =>{
      const auth = getAuth(c);
      const values = c.req.valid("json");

      if (!auth?.userId) {
        return c.json({ error: "Unauthorized"}, 401 );
      }

      const transactionsToDelete = db.$with("transactions_to_delete").as(
        db.select({ id: transactions.id }).from(transactions)
        .innerJoin(accounts, eq(transactions.accountId, accounts.id ))
        .where(and(
          inArray(transactions.id, values.ids),
          eq(accounts.userId, auth.userId),
        )),
      );

      const data = await db
        .with(transactionsToDelete)
        .delete(transactions)
        .where(
          inArray(transactions.id, sql`(select id from ${transactionsToDelete})`)
        )
        .returning({
          id: transactions.id,
        });
      
      return c.json({ data });
    },
  )
  .post(
    "/bulk-create",
    clerkMiddleware(),
    zValidator(
      "json",
      z.array(
        insertTransactionSchema.omit({
          id: true,
        })
      )
    ),
    async (c) => {
      const auth = getAuth(c);
      const values = c.req.valid("json");

      if(auth?.userId) {
        return c.json({error: "Unauthorized"}, 401);
      }

      const data = await db
        .insert(transactions)
        .values(
          values.map((value) => ({
            id: createId(),
            ...value,
          }))
        )
        .returning();

      return c.json({ data });
    },
  )
  .patch(
    "/:id",
    clerkMiddleware(),
    zValidator(
      "param",
      z.object({
        id: z.string().optional(),
      })
    ),
    zValidator(
      "json",
      insertTransactionSchema.omit({
        id: true,
      })
    ),
    async (c) => {
      const auth = getAuth(c);
      const { id } = c.req.valid("param");
      const values = c.req.valid("json");

      if (!id){
        return c.json({ error: "Missing id"}, 401);
      }

      if (!auth?.userId) {
        return c.json({ error: "Unauthorized"},401);
      }

      const transactionsToUpdate = db.$with("transactions_to_update").as(
        db.select({ id: transactions.id }).from(transactions)
        .innerJoin(accounts, eq(transactions.accountId, accounts.id ))
        .where(and(
          eq(transactions.id, id),
          eq(accounts.userId, auth.userId),
        )),
      );

      const [data] = await db
        .with(transactionsToUpdate)
        .update(transactions)
        .set(values)
        .where(
          inArray(transactions.id, sql`(select id from ${transactionsToUpdate})`)
        ).
        returning()

      if (!data) {
        return c.json({ error: "Not Found"}, 404);
      }

      return c.json({ data });
    }
  )
  .delete(
    "/:id",
    clerkMiddleware(),
    zValidator(
      "param",
      z.object({
        id: z.string().optional(),
      })
    ),
    async (c) => {
      const auth = getAuth(c);
      const { id } = c.req.valid("param");

      if (!id){
        return c.json({ error: "Missing id"}, 401);
      }

      if (!auth?.userId) {
        return c.json({ error: "Unauthorized"},401);
      }

      const transactionsToDelete = db.$with("transactions_to_delete").as(
        db.select({ id: transactions.id }).from(transactions)
        .innerJoin(accounts, eq(transactions.accountId, accounts.id ))
        .where(and(
          eq(transactions.id, id),
          eq(accounts.userId, auth.userId),
        )),
      );

      const [data] = await db
        .with(transactionsToDelete)
        .delete(transactions)
        .where(
          inArray(transactions.id, sql`(select id from ${transactionsToDelete})`)
        ).
        returning({
          id: transactions.id,
        });

      if (!data) {
        return c.json({ error: "Not Found"}, 404);
      }

      return c.json({ data });
    }
  );
  
export default app;

Hook API

features/transactions/api/use-bulk-create-transactions.ts：

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import { InferRequestType,InferResponseType } from "hono";
import { toast } from "sonner";
import { useMutation, useQueryClient } from "@tanstack/react-query";

import { client } from "@/lib/hono";

type ResponseType = InferResponseType<typeof client.api.transactions["bulk-create"]["$post"]>;
type RequestType = InferRequestType<typeof client.api.transactions["bulk-create"]["$post"]>["json"];

export const useBulkCreateTransactions = () => {
  const queryClient = useQueryClient();

  const mutation = useMutation<
    ResponseType,
    Error,
    RequestType
  >({
    mutationFn: async (json) => {
      const response = await client.api.transactions["bulk-create"]["$post"]({json});
      return response.json();
    },
    onSuccess: () => {
      toast("Transaction created!");
      queryClient.invalidateQueries({ queryKey:["transactions"]});
      //TODO: Also invalidate summary
    },
    onError: () => {
      toast("Failed to create transactions")
    },
  });

  return mutation;
}

features/transactions/api/use-bulk-delete-transactions.ts

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import { InferRequestType,InferResponseType } from "hono";
import { toast } from "sonner";
import { useMutation, useQueryClient } from "@tanstack/react-query";

import { client } from "@/lib/hono";

type ResponseType = InferResponseType<typeof client.api.transactions["bulk-delete"]["$post"]>;
type RequestType = InferRequestType<typeof client.api.transactions["bulk-delete"]["$post"]>["json"];

export const useBulkDeleteTransactions = () => {
  const queryClient = useQueryClient();

  const mutation = useMutation<
    ResponseType,
    Error,
    RequestType
  >({
    mutationFn: async (json) => {
      const response = await client.api.transactions["bulk-delete"]["$post"]({json});
      return response.json();
    },
    onSuccess: () => {
      toast("Transaction Deleted!");
      queryClient.invalidateQueries({ queryKey:["transactions"]});
      //TODO: Also invalidate summary
    },
    onError: () => {
      toast("Failed to delete transactions")
    },
  });

  return mutation;
}

features/transactions/api/use-create-transaction.ts

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import { InferRequestType,InferResponseType } from "hono";
import { toast } from "sonner";
import { useMutation, useQueryClient } from "@tanstack/react-query";

import { client } from "@/lib/hono";

type ResponseType = InferResponseType<typeof client.api.transactions.$post>;
type RequestType = InferRequestType<typeof client.api.transactions.$post>["json"];

export const useCreateTransaction = () => {
  const queryClient = useQueryClient();

  const mutation = useMutation<
    ResponseType,
    Error,
    RequestType
  >({
    mutationFn: async (json) => {
      const response = await client.api.transactions.$post({json});
      return response.json();
    },
    onSuccess: () => {
      toast("Transaction Created!");
      queryClient.invalidateQueries({ queryKey:["transactions"]});
    },
    onError: () => {
      toast("Failed to create transaction")
    },
  });

  return mutation;
}

features/transactions/api/use-delete-transaction.ts

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import { InferResponseType } from "hono";
import { toast } from "sonner";
import { useMutation, useQueryClient } from "@tanstack/react-query";

import { client } from "@/lib/hono";

type ResponseType = InferResponseType<typeof client.api.transactions[":id"]["$delete"]>;

export const useDeleteTransaction = (id?:string) => {
  const queryClient = useQueryClient();

  const mutation = useMutation<
    ResponseType,
    Error
  >({
    mutationFn: async (json) => {
      const response = await client.api.transactions[":id"]["$delete"]({
        param: { id },
      });
      return response.json();
    },
    onSuccess: () => {
      toast("Transaction deleted!");
      queryClient.invalidateQueries({ queryKey:["transactions", { id }]});
      queryClient.invalidateQueries({ queryKey:["transactions"]});
      // TODO: Invalidate Summary and transactions
    },
    onError: () => {
      toast("Failed to delete transactoin")
    },
  });

  return mutation;
}

features/transactions/api/use-edit-transaction.ts

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import { InferRequestType,InferResponseType } from "hono";
import { toast } from "sonner";
import { useMutation, useQueryClient } from "@tanstack/react-query";

import { client } from "@/lib/hono";

type ResponseType = InferResponseType<typeof client.api.transactions[":id"]["$patch"]>;
type RequestType = InferRequestType<typeof client.api.transactions[":id"]["$patch"]>["json"];

export const useEditTransaction = (id?:string) => {
  const queryClient = useQueryClient();

  const mutation = useMutation<
    ResponseType,
    Error,
    RequestType
  >({
    mutationFn: async (json) => {
      const response = await client.api.transactions[":id"]["$patch"]({
        json,
        param: { id },
      });
      return response.json();
    },
    onSuccess: () => {
      toast("Transaction updated!");
      queryClient.invalidateQueries({ queryKey:["transactions", { id }]});
      queryClient.invalidateQueries({ queryKey:["transactions"]});
      // TODO: Invalidate Summary and transactions
    },
    onError: () => {
      toast("Failed to edit transaction")
    },
  });

  return mutation;
}

features/transactions/api/use-get-transaction.ts

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import { useQuery } from "@tanstack/react-query";

import { client } from "@/lib/hono"

export const useGetTransaction = (id?: string ) => {
  const query = useQuery({
    enabled: !!id,
    queryKey: ["transactions", { id }],
    queryFn: async () => {
      const res = await client.api.transactions[":id"].$get({
        param: { id }
      });
      
      if(!res.ok){
        throw new Error("Failed to fetch transactoin");
      }

      const { data } = await res.json();
      return data;
    },
  });

  return query;
};

features/transactions/api/use-get-transactions.ts

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import { useQuery } from "@tanstack/react-query";

import { client } from "@/lib/hono"
import { useSearchParams } from "next/navigation";

export const useGetTransactions = () => {
  const params = useSearchParams();
  const from = params.get("from") || "";
  const to = params.get("to") || "";
  const accountId = params.get("accountId") || "";

  const query = useQuery({
    //TODO: check if param are needed in the key
    queryKey: ["transactions", { from, to, accountId }],
    queryFn: async () => {
      const res = await client.api.transactions.$get({
        query: {
          from,
          to,
          accountId
        },
      });
      
      if(!res.ok){
        throw new Error("Failed to fetch transactions");
      }

      const { data } = await res.json();
      return data;
    },
  });

  return query;
};

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