rec ok with negatives/positives

cmd/cli/main.go

@@ -248,7 +248,7 @@ func Main() {
 
 		inDay := func(date string, transaction bank.Transaction) bool {
 			return slices.ContainsFunc(byDate[date], func(d ledger.Delta) bool {
-				return d.Value == transaction.Amount
+				return d.Value == transaction.Amount || -1.0*d.Value == transaction.Amount
 			})
 		}
 

cmd/main.go

@@ -1,14 +1,32 @@
 package main
 
 import (
+	"context"
+	"log"
 	"os"
+	"os/signal"
+	"syscall"
 
 	"gogs.inhome.blapointe.com/ana-ledger/cmd/cli"
 	"gogs.inhome.blapointe.com/ana-ledger/cmd/http"
+	"gogs.inhome.blapointe.com/ana-ledger/src/bank/teller"
 )
 
 func main() {
 	switch os.Args[1] {
+	case "tel":
+		ctx, can := signal.NotifyContext(context.Background(), syscall.SIGINT)
+		defer can()
+
+		if c, err := teller.New(); err != nil {
+		} else if _, err := c.Accounts(ctx); err != nil {
+		} else {
+			log.Println("teller already init")
+		}
+
+		if err := teller.Init(ctx); err != nil {
+			panic(err)
+		}
 	case "http":
 		os.Args = append([]string{os.Args[0]}, os.Args[2:]...)
 		http.Main()

src/bank/cache/cache.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"log"
 	"os"
 	"path"
 	"time"
@@ -22,7 +23,11 @@ func New(client bank.Agg) Client {
 }
 
 func (c Client) Accounts(ctx context.Context) ([]bank.Account, error) {
-	if result := []bank.Account{}; fromCache("accounts", &result) == nil {
+	k := "accounts"
+	result := []bank.Account{}
+	if err := fromCache(k, &result); err != nil {
+		log.Printf("%q not in cache: %v", k, err)
+	} else {
 		return result, nil
 	}
 
@@ -31,13 +36,17 @@ func (c Client) Accounts(ctx context.Context) ([]bank.Account, error) {
 		return nil, err
 	}
 
-	toCache("accounts", result)
+	toCache(k, result)
 
 	return result, nil
 }
 
 func (c Client) Transactions(ctx context.Context, a bank.Account) ([]bank.Transaction, error) {
-	if result := []bank.Transaction{}; fromCache(path.Join("accounts", a.Account), &result) == nil {
+	k := path.Join("accounts.d", a.Account)
+	result := []bank.Transaction{}
+	if err := fromCache(k, &result); err != nil {
+		log.Printf("%q not in cache: %v", k, err)
+	} else {
 		return result, nil
 	}
 
@@ -46,7 +55,7 @@ func (c Client) Transactions(ctx context.Context, a bank.Account) ([]bank.Transa
 		return nil, err
 	}
 
-	toCache(path.Join("accounts", a.Account), result)
+	toCache(k, result)
 
 	return result, nil
 }
@@ -56,15 +65,25 @@ var (
 )
 
 func toCache(k string, v interface{}) {
+	if err := _toCache(k, v); err != nil {
+		log.Printf("failed to cache %s: %v", k, err)
+	}
+}
+
+func _toCache(k string, v interface{}) error {
 	b, err := json.Marshal(v)
 	if err != nil {
-		return
+		return err
 	}
 
 	p := path.Join(d, k)
+	os.MkdirAll(path.Dir(p), os.ModePerm)
 	if err := os.WriteFile(p, b, os.ModePerm); err != nil {
 		os.Remove(p)
+		return err
 	}
+
+	return nil
 }
 
 func fromCache(k string, ptr interface{}) error {

src/bank/cache/cache_integration_test.go

@@ -12,12 +12,11 @@ import (
 )
 
 func Test(t *testing.T) {
-	c, err := teller.New()
+	tellerC, err := teller.New()
 	if err != nil {
 		t.Fatal(err)
 	}
-
-	client := cache.New(c)
+	client := cache.New(tellerC)
 
 	ctx := context.Background()
 
@@ -25,7 +24,7 @@ func Test(t *testing.T) {
 		i := i
 		client := client
 		t.Run(strconv.Itoa(i), func(t *testing.T) {
-			accounts, err := c.Accounts(ctx)
+			accounts, err := client.Accounts(ctx)
 			if err != nil {
 				t.Fatal(err)
 			}
@@ -33,7 +32,7 @@ func Test(t *testing.T) {
 			for _, account := range accounts {
 				account := account
 				t.Run(account.Account, func(t *testing.T) {
-					transactions, err := c.Transactions(ctx, account)
+					transactions, err := client.Transactions(ctx, account)
 					if err != nil {
 						t.Fatal(err)
 					}

src/bank/teller/application_id.txt

@@ -0,0 +1 @@
+app_pdvv33dtmta4fema66000

src/bank/teller/init.go

@@ -0,0 +1,74 @@
+package teller
+
+import (
+	"bufio"
+	"context"
+	_ "embed"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"slices"
+	"strings"
+	"text/template"
+)
+
+var (
+	//go:embed application_id.txt
+	applicationId string
+	//go:embed init.html
+	initHTML string
+)
+
+func Init(ctx context.Context) error {
+	reader := bufio.NewReader(os.Stdin)
+
+	if Token == "" {
+	} else if fmt.Println("Token already exists; are you sure [nY]?"); false {
+	} else if text, _ := reader.ReadString('\n'); !strings.Contains(text, "Y") {
+		return fmt.Errorf("token already exists")
+	}
+
+	environment := "development"
+	if sandbox := !slices.Contains(os.Args, "forreal"); sandbox {
+		environment = "sandbox"
+	}
+	fmt.Printf("environment=%q\n", environment)
+
+	newTokens := make(chan string)
+	defer close(newTokens)
+	s := &http.Server{
+		Addr: ":20000",
+		Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			if r.Method != http.MethodGet {
+				b, _ := io.ReadAll(r.Body)
+				newTokens <- string(b)
+				return
+			}
+
+			t, err := template.New("initHTML").Parse(initHTML)
+			if err != nil {
+				panic(err)
+			}
+
+			if err := t.Execute(w, map[string]string{
+				"applicationId": applicationId,
+				"environment":   environment,
+			}); err != nil {
+				panic(err)
+			}
+		}),
+	}
+	defer s.Close()
+	go s.ListenAndServe()
+
+	fmt.Println("Open https://localhost:20000")
+
+	select {
+	case <-ctx.Done():
+	case newToken := <-newTokens:
+		return fmt.Errorf("not impl: %q => token.txt", newToken)
+	}
+
+	return ctx.Err()
+}

src/bank/teller/init.html

@@ -0,0 +1,58 @@
+<html>
+  <head></head>
+  <body>
+    <button id="teller-connect">Connect to your bank</button>
+
+    <h3 id="log">
+    </h3>
+
+    <script src="https://cdn.teller.io/connect/connect.js"></script>
+    <script>
+      function logme(msg) {
+         document.getElementById("log").innerHTML += `<br>* ${msg}`
+      }
+
+      function http(method, remote, callback, body) {
+         var xmlhttp = new XMLHttpRequest();
+         xmlhttp.onreadystatechange = function() {
+            if (xmlhttp.readyState == XMLHttpRequest.DONE) {
+               callback(xmlhttp.responseText, xmlhttp.status)
+            }
+         };
+         xmlhttp.open(method, remote, true);
+         if (typeof body == "undefined") {
+            body = null
+         }
+         xmlhttp.send(body);
+      }
+      function callback(responseBody, responseStatus) {
+      }
+
+      document.addEventListener("DOMContentLoaded", function() {
+         var tellerConnect = TellerConnect.setup({
+            applicationId: "{{.applicationId}}",
+            environment: "{{.environment}}",
+            products: ["verify", "balance", "transactions"],
+            onInit: function() {
+               logme("Teller Connect has initialized")
+            },
+            onSuccess: function(enrollment) {
+               logme(`User enrolled successfully: ${enrollment.accessToken}`)
+               http("post", "/", callback, enrollment.accessToken)
+            },
+            onExit: function() {
+               logme("User closed Teller Connect")
+            },
+            onFailure: function(failure) {
+               logme(`Failed: type=${failure.type} code=${failure.code} message=${failure.message}`)
+            },
+         });
+
+         var el = document.getElementById("teller-connect");
+         el.addEventListener("click", function() {
+            tellerConnect.open();
+         });
+      });
+    </script>
+  </body>
+</html>

src/bank/teller/teller.go

@@ -5,7 +5,10 @@ import (
 	"crypto/tls"
 	_ "embed"
 	"encoding/json"
+	"fmt"
+	"io"
 	"net/http"
+	"strings"
 	"time"
 
 	"gogs.inhome.blapointe.com/ana-ledger/src/bank"
@@ -22,6 +25,8 @@ var (
 	certificate []byte
 	//go:embed private_key.pem
 	privateKey []byte
+	//go:embed token.txt
+	Token string
 )
 
 func New() (Client, error) {
@@ -54,7 +59,7 @@ func (c Client) get(ctx context.Context, url string, ptr interface{}) error {
 	if err != nil {
 		return err
 	}
-	req.SetBasicAuth("test_token_bfu2cyvq3il6o", "") // TODO
+	req.SetBasicAuth(strings.TrimSpace(Token), "")
 	req = req.WithContext(ctx)
 
 	resp, err := httpc.Do(req)
@@ -63,5 +68,9 @@ func (c Client) get(ctx context.Context, url string, ptr interface{}) error {
 	}
 	defer resp.Body.Close()
 
-	return json.NewDecoder(resp.Body).Decode(ptr)
+	b, _ := io.ReadAll(resp.Body)
+	if err := json.Unmarshal(b, &ptr); err != nil {
+		return fmt.Errorf("cannot unmarshal: %w: %s", err, b)
+	}
+	return nil
 }

src/bank/teller/teller_integration_test.go

@@ -10,6 +10,8 @@ import (
 )
 
 func Test(t *testing.T) {
+	teller.Token = "test_token_bfu2cyvq3il6o"
+
 	c, err := teller.New()
 	if err != nil {
 		t.Fatal(err)

src/bank/teller/teller_manual_test.go

@@ -8,9 +8,13 @@ import (
 	"net/http"
 	"testing"
 	"time"
+
+	"gogs.inhome.blapointe.com/ana-ledger/src/bank/teller"
 )
 
 func TestIntegration(t *testing.T) {
+	teller.Token = "test_token_bfu2cyvq3il6o"
+
 	//curl --cert certificate.pem --cert-key private_key.pem   --auth test_token_bfu2cyvq3il6o: https://api.teller.io/accounts
 	cert, err := tls.LoadX509KeyPair("./certificate.pem", "./private_key.pem")
 	if err != nil {

src/bank/teller/token.txt

@@ -0,0 +1 @@
+token_2utqstwpn3pxwgvyno56hqdehq