added dividend db table and insert by trade

internal/database/main.go

@@ -21,12 +21,24 @@ func InitDB(db *sql.DB) {
         symbol        TEXT    NOT NULL,
         currency_code TEXT    NOT NULL,
         shares        INTEGER NOT NULL,
-        product     INTEGER NOT NULL CHECK(product IN (0, 1, 2, 3)),
-        type        INTEGER NOT NULL CHECK(type IN (0, 1)),
+        product       INTEGER NOT NULL CHECK(product IN (0, 1, 2, 3, 4)), -- added 4 for BondTrade
+        type          INTEGER NOT NULL CHECK(type IN (0, 1)),             -- Buy=0, Sell=1 only; Dividend has its own table
         price         REAL    NOT NULL,
         traded_at     DATETIME NOT NULL
     );
 
+    CREATE TABLE IF NOT EXISTS dividends (
+        id            INTEGER PRIMARY KEY AUTOINCREMENT,
+        symbol        TEXT    NOT NULL,
+        currency_code TEXT    NOT NULL,
+        product       INTEGER NOT NULL CHECK(product IN (0, 1, 2, 3, 4)),
+        value         REAL    NOT NULL,
+        tax_amount    REAL    NOT NULL DEFAULT 0,
+        tax_rate      REAL    NOT NULL DEFAULT 0,
+        net_value     REAL    NOT NULL,
+        payment_date  DATETIME NOT NULL
+    );
+
     CREATE TABLE IF NOT EXISTS position (
         id          INTEGER PRIMARY KEY AUTOINCREMENT,
         company_id  INTEGER NOT NULL UNIQUE,

internal/database/portfolio.go

@@ -25,14 +25,7 @@ func GetTrades(db *sql.DB) ([]model.Trade, error) {
 			return nil, err
 		}
 
-		switch typeInt {
-		case 0:
-			t.Type = model.TradeType(false)
-		case 1:
-			t.Type = model.TradeType(true)
-		default:
-			return nil, fmt.Errorf("failed to convert given Type int to bool of trade type.")
-		}
+		t.Type = model.TradeType(typeInt)
 
 		trades = append(trades, t)
 	}
@@ -81,6 +74,21 @@ func InsertTrade(db *sql.DB, trade model.Trade) error {
 	return err
 }
 
+func InsertDividend(db *sql.DB, div model.Dividend) error {
+	_, err := db.Exec(
+		"INSERT INTO trades (symbol, currency_code, shares, product, value, tax_amount, tax_rate, net_value, payment_date) VALUES (?, ?, ?, ?, ?, ?, ?)",
+		div.Symbol,
+		div.CurrencyCode,
+		div.Product,
+		div.Value,
+		div.TaxAmount,
+		div.TaxRate,
+		div.NetValue,
+		div.PaymentDate,
+	)
+	return err
+}
+
 func UpdatePositions(db *sql.DB, positions []model.Position) error {
 	// Complete overwrite of the db positions
 	_, err := db.Exec("DELETE FROM position")

internal/handlers/portfolio.go

@@ -20,45 +20,57 @@ func AddTradeHandler(db *sql.DB) http.HandlerFunc {
 			return
 		}
 
-		err := req.Validate()
-		if err != nil {
-			http.Error(w, fmt.Sprintf("failed to validate trade: %s", err), http.StatusInternalServerError)
+		if err := req.Validate(); err != nil {
+			http.Error(w, fmt.Sprintf("failed to validate trade: %s", err), http.StatusBadRequest)
 			return
 		}
 
-		// check if currency is in the db.
 		currency, err := database.GetCurrencyByCode(db, req.CurrencyCode)
 		if err != nil {
 			http.Error(w, fmt.Sprintf("failed to find currency: %s", err), http.StatusInternalServerError)
 			return
 		}
 
-		trade := model.Trade{
-			Symbol:       req.Symbol,
-			Shares:       req.Shares,
-			Product:      model.TradeProduct(req.Product),
-			Type:         model.TradeType(req.Type),
-			Price:        req.Price,
-			CurrencyCode: currency.Code,
-			Date:         req.Date,
-		}
-
-		err = database.InsertTrade(db, trade)
+		switch model.TradeType(req.Type) {
+		case model.DividendType:
+			dividend, err := req.ToDividend()
 			if err != nil {
-			http.Error(w, fmt.Sprintf("failed to insert trade into db: %s", err), http.StatusInternalServerError)
+				http.Error(w, fmt.Sprintf("failed to build dividend: %s", err), http.StatusBadRequest)
+				return
+			}
+			dividend.CurrencyCode = currency.Code
+
+			if err := database.InsertDividend(db, dividend); err != nil {
+				http.Error(w, fmt.Sprintf("failed to insert dividend: %s", err), http.StatusInternalServerError)
 				return
 			}
 
-		err = service.UpdatePositionByTradeList(db)
-		update := true
+			w.Header().Set("Content-Type", "application/json")
+			json.NewEncoder(w).Encode(map[string]any{"success": true})
+
+		case model.BuyType, model.SellType:
+			trade, err := req.ToTrade()
 			if err != nil {
+				http.Error(w, fmt.Sprintf("failed to build trade: %s", err), http.StatusBadRequest)
+				return
+			}
+			trade.CurrencyCode = currency.Code
+
+			if err := database.InsertTrade(db, trade); err != nil {
+				http.Error(w, fmt.Sprintf("failed to insert trade: %s", err), http.StatusInternalServerError)
+				return
+			}
+
+			update := true
+			if err := service.UpdatePositionByTradeList(db); err != nil {
 				update = false
 			}
 
 			w.Header().Set("Content-Type", "application/json")
-		if err := json.NewEncoder(w).Encode(map[string]any{"success": true, "position update": update}); err != nil {
-			http.Error(w, fmt.Sprintf("failed to encode trades: %s", err), http.StatusInternalServerError)
-			return
+			json.NewEncoder(w).Encode(map[string]any{"success": true, "position_update": update})
+
+		default:
+			http.Error(w, fmt.Sprintf("unknown trade type: %d", req.Type), http.StatusBadRequest)
 		}
 	}
 }

internal/model/portifolio.go

@@ -2,6 +2,7 @@ package model
 
 import (
 	"errors"
+	"fmt"
 	"time"
 )
 
@@ -55,21 +56,28 @@ const (
 	BondTrade
 )
 
-type TradeType bool
+type TradeType int
 
 const (
-	Buy  TradeType = true
-	Sell TradeType = false
+	BuyType      TradeType = iota // 0
+	SellType                      // 1
+	DividendType                  // 2
 )
 
 type AddTradeRequest struct {
 	Symbol       string    `json:"symbol"`
 	Shares       int       `json:"shares"`
 	Product      int       `json:"product"`
-	Type         bool      `json:"type"`
+	Type         int       `json:"type"` // was bool, now int
 	Price        float64   `json:"price"`
 	CurrencyCode string    `json:"currency_code"`
 	Date         time.Time `json:"date"`
+
+	// Dividend-specific fields (only populated when Type == 2)
+	TaxAmount   float64   `json:"tax_amount,omitempty"`
+	TaxRate     float64   `json:"tax_rate,omitempty"`
+	NetValue    float64   `json:"net_value,omitempty"`
+	PaymentDate time.Time `json:"payment_date,omitempty"`
 }
 
 type Trade struct {
@@ -107,6 +115,38 @@ func (r *AddTradeRequest) Validate() error {
 	return nil
 }
 
+func (r AddTradeRequest) ToDividend() (Dividend, error) {
+	if TradeType(r.Type) != DividendType {
+		return Dividend{}, fmt.Errorf("trade type is not a dividend")
+	}
+	return Dividend{
+		Symbol:       r.Symbol,
+		CurrencyCode: r.CurrencyCode,
+		Product:      TradeProduct(r.Product),
+		Value:        r.Price, // gross value
+		PaymentDate:  r.PaymentDate,
+		TaxAmount:    r.TaxAmount,
+		TaxRate:      r.TaxRate,
+		NetValue:     r.NetValue,
+	}, nil
+}
+
+func (r AddTradeRequest) ToTrade() (Trade, error) {
+	t := TradeType(r.Type)
+	if t != BuyType && t != SellType {
+		return Trade{}, fmt.Errorf("trade type is not buy or sell")
+	}
+	return Trade{
+		Symbol:       r.Symbol,
+		CurrencyCode: r.CurrencyCode,
+		Shares:       r.Shares,
+		Product:      TradeProduct(r.Product),
+		Type:         t,
+		Price:        r.Price,
+		Date:         r.Date,
+	}, nil
+}
+
 // for now trades and none stock position will not be supported.
 type Portifolio struct {
 	Positions []Position

internal/service/portfolio.go

@@ -19,7 +19,7 @@ func UpdatePositionByTradeList(db *sql.DB) error {
 	TradeSum := make(map[string]model.Position)
 
 	for _, trade := range trades {
-		if trade.Type == model.Buy {
+		if trade.Type == model.BuyType {
 			TradeSum[trade.Symbol] = model.Position{
 				Symbol:       trade.Symbol,
 				CurrencyCode: trade.CurrencyCode,