Add support for existing transactions

src/backend/index.ts

@@ -186,6 +186,72 @@ export class Actual {
       return this.#doSubmit(prepared, opts);
     });
   }
+
+  async getTransactions(limit: number): Promise<Transaction[]> {    
+    return this.#api(async () => {
+      const accounts: ActualAccount[] = await api.getAccounts();
+      const payees: ActualPayee[] = await api.getPayees();
+
+      const query = api.q('transactions')
+        .limit(limit)
+        .select(['*']);
+
+      const { data } = await api.runQuery(query) as { data: ActualTransaction[] };
+
+      return this.#mapActualTransactionsToTransactions(data, accounts, payees);
+    });
+  }
+
+  async getTransactionsFromRange(start: string, end: string): Promise<Transaction[]> {
+    return this.#api(async () => {
+      const accounts: ActualAccount[] = await api.getAccounts();
+      const payees: ActualPayee[] = await api.getPayees();
+      
+      const query = api.q('transactions')
+        .filter({ date: [{ $gte: start }, { $lte: end }] })
+        .select(['*']);
+
+      const { data } = await api.runQuery(query) as { data: ActualTransaction[] };
+      
+      return this.#mapActualTransactionsToTransactions(data, accounts, payees);
+    });
+  }
+
+  #mapActualTransactionsToTransactions(transactions: ActualTransaction[], accounts: ActualAccount[], payees: ActualPayee[]): Transaction[] {
+    const transfers: string[] = [];
+
+    return transactions.map(t => {
+      const account = accounts.find(a => a.id === t.account)?.name ?? t.account ?? "--unknown--";
+      const payee = payees.find(p => p.id === t.payee)?.name ?? t.payee ?? "--unknown--";
+      
+      let from = account;
+      let to = payee;
+
+      if (t.amount && t.amount > 0) {
+        from = payee;
+        to = account;
+      }
+
+      if (t.transfer_id) {
+        if (transfers.includes(t.id!!)) {            
+          return undefined;
+        }
+
+        transfers.push(t.transfer_id);
+      }
+
+      return {
+        kind: t.transfer_id ? 'transfer' : 'regular',
+        date: t.date,
+        from,
+        to,
+        fromDetails: from,
+        toDetails: to,
+        amount: (t.amount ?? 0)/100,
+        title: t.notes
+      } as Transaction;
+    }).filter(t => t !== undefined);
+  }
 }
 
 async function sleep(ms: number): Promise<void> {

src/runner/index.ts

@@ -15,6 +15,29 @@ export type ImportResult = PrepareResult & {
   result: ActualImportResult;
 };
 
+export const getTransactions = async (server: string, config: Config, limit: number = 5): Promise<Transaction[]> => {
+  const serverConfig = config.servers[server];
+
+  if(!serverConfig) {
+    throw new Error(`Unknown server: ${server}`);
+  }
+
+  const actualServer = new Actual(serverConfig);
+
+  return await actualServer.getTransactions(limit);
+};
+
+export const getTransactionsFromRange = async (server: string, config: Config, start: string, end: string): Promise<Transaction[]> => {
+  const serverConfig = config.servers[server];
+
+  if(!serverConfig) {
+    throw new Error(`Unknown server: ${server}`);
+  }
+
+  const actualServer = new Actual(serverConfig);
+
+  return await actualServer.getTransactionsFromRange(start, end);
+};
 
 export const prepareTransactions = async (stream: Readable, profile: string, server: string, config: Config): Promise<PrepareResult> => new Promise((resolve, reject) => {  
   const profileConfig = config.profiles[profile];

src/server/index.ts

@@ -1,4 +1,4 @@
-import { prepareTransactions, submitTransactions } from "@/runner";
+import { getTransactions, getTransactionsFromRange, prepareTransactions, submitTransactions } from "@/runner";
 import { Config } from "@/types/config";
 import express from "express";
 import multer from "multer";
@@ -20,6 +20,22 @@ export function serve(config: Config, port: number) {
     });
   });
 
+  app.get("/servers/:server/transactions", async (req, res) => {
+    const { start, end } = req.query;
+
+    if (start && end) {
+      const data = await getTransactionsFromRange(req.params.server, config, start.toString(), end.toString());
+      res.json(data);
+    }
+
+    else {
+      const limitParam = req.query.limit?.toString();
+      const limit = (limitParam && Number.parseInt(limitParam)) || undefined;
+      const data = await getTransactions(req.params.server, config, limit);
+      res.json(data);   
+    }    
+  });
+
   app.post("/prepare", upload.single("file"), async (req, res) => {
     if (!req.file) {
       throw new Error("No file to upload");

web/src/hooks/useLoader.ts

@@ -7,23 +7,30 @@ export type UseLoaderReturnType<T extends any[], R> = {
   error?: unknown;
 };
 
-export function useLoader<T extends any[], R>(fn: (...args: T) => Promise<R>, deps?: React.DependencyList) {
+export function useLoader<T extends any[], R>(fn: (...args: T) => Promise<R>, deps: React.DependencyList = []) {
   const [loading, setLoading] = useState(false);
   const [completed, setCompleted] = useState(false);
   const [error, setError] = useState<unknown|undefined>(undefined);
 
-  const callback = useCallback(async (...args: T) => {
+  const callback = useCallback(async (...args: T): Promise<R> => {    
+    setLoading(true);
+    setCompleted(false);
+    setError(undefined);
+        
+    // Wait 1 tick
+    await new Promise(resolve => setTimeout(resolve, 0));
+    
     try {
-      setLoading(true);
-      const value = await fn(...args);    
+      const value = await fn(...args);
       setCompleted(true);
       return value;  
     } catch(e: unknown) {
       setError(e);
+      throw e;
     } finally {
       setLoading(false);
     }
-  }, [setLoading, setCompleted, setError, ...(deps ?? [])]);
+  }, [fn, ...deps]);
 
   return {
     fn: callback,
@@ -31,4 +38,4 @@ export function useLoader<T extends any[], R>(fn: (...args: T) => Promise<R>, de
     completed,
     error
   };
-}
+}

web/src/pages/PrepareTransactionsPage/ExistingTransactions.tsx

@@ -0,0 +1,54 @@
+import classNames from "classnames";
+import type { Transaction } from "../../types/api";
+import { useCallback } from "react";
+
+export type ExistingTransactionsProps = {
+  transactions: Transaction[];
+  loading: boolean;
+};
+
+const transactionEmoji = (transaction: Transaction): string => {
+  if (transaction.kind === 'transfer') {
+    return '➡️'
+  };
+
+  return transaction.amount > 0 ? '⬇️' : '⬆️';
+};
+
+const transactionType = (transaction: Transaction): string => {
+  if (transaction.kind === 'transfer') {
+    return 'Transfer'
+  };
+
+  return transaction.amount > 0 ? 'Inflow' : 'Outflow';
+};
+
+export function ExistingTransactions({ transactions, loading }: ExistingTransactionsProps) {
+  const renderRow = useCallback((transaction: Transaction, index: number) => (
+    <div
+      key={index}      
+      className={classNames('notification', 'is-light', {
+        'is-success': transaction.kind === 'regular' && transaction.amount > 0,
+        'is-danger': transaction.kind === 'regular' && transaction.amount < 0,
+        'is-info': transaction.kind === 'transfer',        
+      })}>
+        <h6 className="title is-6" title={transactionType(transaction)}>
+          {transactionEmoji(transaction)} {transaction.date}
+        </h6>      
+      <strong>From:</strong> {transaction.from}<br />
+      <strong>To:</strong> {transaction.to}<br />
+      <strong>Title:</strong> {transaction.title}<br />
+      <strong>Amount:</strong> {transaction.amount}
+    </div>
+  ), []);
+
+  return (
+    <>
+      {loading
+        ? <div className="notification is-warning is-light">
+            <strong>Loading...</strong>
+          </div>
+        : transactions.map(renderRow)}
+    </>
+  );
+}

web/src/pages/PrepareTransactionsPage/PrepareTransactionsPage.tsx

@@ -3,11 +3,12 @@ import { useStore } from "../../store/AppStore";
 import TransactionsTable from "./TransactionsTable";
 import { SkippedLines } from "./SkippedLines";
 import ImportBar from "./ImportBar";
-import type { ImportOptions } from "../../types/api";
-import { submitTransactions } from "../../services/api.service";
+import { type ImportOptions, type Transaction } from "../../types/api";
+import { getDateRangedTransactions, getLatestTransactions, submitTransactions } from "../../services/api.service";
 import { useLoader } from "../../hooks/useLoader";
 import { FilterPanel, type FilterData } from "./FilterPanel";
 import dayjs from "dayjs";
+import { ExistingTransactions } from "./ExistingTransactions";
 
 
 export default function PrepareTransactionsPage() {
@@ -15,6 +16,8 @@ export default function PrepareTransactionsPage() {
 
   const [userFilter, setUserFilter] = useState<FilterData>({});
   const [deselected, setDeselected] = useState<number[]>([]);
+  const [enabledExistingTransactions, setEnabledExistingTransactions] = useState(true);
+  const [existingTransactions, setExistingTransactions] = useState<Transaction[]>([]);
 
   const select = useCallback((index: number) => setDeselected(deselected.filter(x => x !== index)), [deselected, setDeselected]);
   const deselect = useCallback((index: number) => setDeselected([...deselected, index]), [deselected, setDeselected]);  
@@ -40,7 +43,9 @@ export default function PrepareTransactionsPage() {
     })
   , [state.transactions, userFilter]);
 
-  const selectedTransactions = useMemo(() => filteredTransactions.filter((_, i) => !deselected.includes(i)), [filteredTransactions, deselected]);
+  const selectedTransactions = useMemo(() => 
+    filteredTransactions.filter((_, i) => !deselected.includes(i)), 
+  [filteredTransactions, deselected]);
 
   const { fn: handleSubmit, loading } = useLoader(async (opts: ImportOptions) => {
     if(!state.server) {
@@ -60,9 +65,36 @@ export default function PrepareTransactionsPage() {
         offset: 1
       }
     });
-  }, [selectedTransactions, state]);  
+  }, [selectedTransactions, state]);    
 
-  useEffect(() => setDeselected([]), [filteredTransactions]);
+  const { fn: refreshExistingTransactions, loading: loadingExistingTransactions } = useLoader(async () => {
+    if (!state.server || !enabledExistingTransactions) {
+      setExistingTransactions([]);
+      return;
+    }
+
+    // If no "from" filter active, pull the latest 10 transactions
+    if (!userFilter.from) {
+      const transactions = await getLatestTransactions(state.server, 10);
+      setExistingTransactions(transactions);
+      return;
+    }
+
+    const start = userFilter.from.format("YYYY-MM-DD");
+    const end = (userFilter.to ?? dayjs()).format("YYYY-MM-DD");    
+
+    const transactions = await getDateRangedTransactions(state.server, start, end);
+    setExistingTransactions(transactions);
+  }, [enabledExistingTransactions, state.server, userFilter]);
+
+
+  useEffect(() => {
+    setDeselected([])
+  }, [filteredTransactions]);
+
+  useEffect(() => {    
+    refreshExistingTransactions()
+  }, [enabledExistingTransactions, state.server, userFilter]);    
 
   return (
     <div className="columns mt-6">
@@ -74,15 +106,28 @@ export default function PrepareTransactionsPage() {
             <h3 className="title is-5">Filters</h3>
             <FilterPanel value={userFilter} setValue={setUserFilter} />
           </div>
-          
-          <div className="content">
-            <h3 className="title is-5">Considered transactions ({selectedTransactions.length}/{filteredTransactions.length})</h3>
-            <TransactionsTable 
-              transactions={filteredTransactions} 
-              deselected={deselected}
-              deselect={deselect}
-              select={select} />
-          </div> 
+
+          <div className="columns">
+          <div className="column is-6">
+              <h3 className="title is-5">Considered transactions ({selectedTransactions.length}/{filteredTransactions.length})</h3>
+              <TransactionsTable 
+                transactions={filteredTransactions} 
+                deselected={deselected}
+                deselect={deselect}
+                select={select} />
+            </div> 
+
+            <div className="column is-6">
+              <h3 className="title is-5">Existing transactions ({existingTransactions.length})&nbsp;
+              <a 
+                title={enabledExistingTransactions ? "Disable fetching existing transactions" : "Enable fetching existing transactions"}
+                onClick={() => setEnabledExistingTransactions(!enabledExistingTransactions)}>{enabledExistingTransactions ? "🟢" : "🔴"}</a>
+              </h3>
+              <ExistingTransactions 
+                loading={loadingExistingTransactions}                
+                transactions={existingTransactions} />
+            </div>          
+          </div>
 
           <div className="content">
             <h3 className="title is-5">Skipped lines ({state.skipped.length})</h3>
@@ -92,7 +137,6 @@ export default function PrepareTransactionsPage() {
           <div className="content">
             <ImportBar loading={loading} onSubmit={handleSubmit} onStartOver={() => location.reload()}/>
           </div>
-
         </div>
       </div>
     </div>

web/src/pages/PrepareTransactionsPage/TransactionsTable.module.css

@@ -2,8 +2,4 @@
   .transaction {
     cursor: pointer;
   }
-
-  .amount {
-    
-  }
 }

web/src/services/api.service.ts

@@ -38,4 +38,24 @@ export async function submitTransactions(transactions: Transaction[], server: st
 
   const data = await response.json();
   return data as SubmitResponse;
+}
+
+export async function getLatestTransactions(server: string, limit: number = 5): Promise<Transaction[]> {
+  const params = new URLSearchParams();
+  params.append('limit', limit.toString());
+
+  const response = await fetch(`/servers/${server}/transactions?${params.toString()}`);
+  const data = await response.json();
+  return data as Transaction[];
+}
+
+export async function getDateRangedTransactions(server: string, start: string, end: string): Promise<Transaction[]> {
+  const params = new URLSearchParams();
+
+  params.append('start', start);
+  params.append('end', end);
+
+  const response = await fetch(`/servers/${server}/transactions?${params.toString()}`);
+  const data = await response.json();
+  return data as Transaction[];
 }