first commit of restructured project

trahn-trade-backend/internal/models/gridstate.go

@@ -0,0 +1,37 @@
+package models
+
+import (
+	"encoding/json"
+	"time"
+)
+
+type GridState struct {
+	ID             int              `json:"id"`
+	BasePrice      *float64         `json:"basePrice,omitempty"`
+	GridLevelsJSON json.RawMessage  `json:"gridLevelsJson,omitempty"`
+	TradesExecuted int              `json:"tradesExecuted"`
+	TotalProfit    float64          `json:"totalProfit"`
+	LastSRRefresh  *time.Time       `json:"lastSrRefresh,omitempty"`
+	IsActive       bool             `json:"isActive"`
+	CreatedAt      time.Time        `json:"createdAt"`
+	UpdatedAt      time.Time        `json:"updatedAt"`
+
+	// Paper wallet fields (NULL for live trading)
+	PaperETHBalance    *float64        `json:"paperEthBalance,omitempty"`
+	PaperUSDCBalance   *float64        `json:"paperUsdcBalance,omitempty"`
+	PaperTotalGasSpent *float64        `json:"paperTotalGasSpent,omitempty"`
+	PaperTradesJSON    json.RawMessage `json:"paperTradesJson,omitempty"`
+	PaperStartTime     *time.Time      `json:"paperStartTime,omitempty"`
+	PaperInitialETH    *float64        `json:"paperInitialEth,omitempty"`
+	PaperInitialUSDC   *float64        `json:"paperInitialUsdc,omitempty"`
+}
+
+type PaperWallet struct {
+	ETHBalance    float64         `json:"ethBalance"`
+	USDCBalance   float64         `json:"usdcBalance"`
+	TotalGasSpent float64         `json:"totalGasSpent"`
+	Trades        json.RawMessage `json:"trades"`
+	StartTime     *time.Time      `json:"startTime"`
+	InitialETH    float64         `json:"initialEth"`
+	InitialUSDC   float64         `json:"initialUsdc"`
+}

trahn-trade-backend/internal/models/price.go

@@ -0,0 +1,12 @@
+package models
+
+import "time"
+
+type PricePoint struct {
+	ID         int64     `json:"id"`
+	Timestamp  time.Time `json:"timestamp"`
+	Price      float64   `json:"price"`
+	TradingDay string    `json:"tradingDay"`
+	Source     string    `json:"source"`
+	CreatedAt  time.Time `json:"createdAt"`
+}

trahn-trade-backend/internal/models/sr.go

@@ -0,0 +1,27 @@
+package models
+
+import (
+	"math"
+	"time"
+)
+
+type SupportResistance struct {
+	ID               int64     `json:"id"`
+	Timestamp        time.Time `json:"timestamp"`
+	Method           string    `json:"method"`
+	LookbackDays     int       `json:"lookbackDays"`
+	Support          float64   `json:"support"`
+	Resistance       float64   `json:"resistance"`
+	Midpoint         float64   `json:"midpoint"`
+	AvgPrice         *float64  `json:"avgPrice,omitempty"`
+	GridRecalculated bool      `json:"gridRecalculated"`
+	CreatedAt        time.Time `json:"createdAt"`
+}
+
+func (sr *SupportResistance) HasChangedSignificantly(previous *SupportResistance, thresholdPercent float64) bool {
+	if previous == nil || previous.Midpoint == 0 {
+		return true
+	}
+	change := math.Abs((sr.Midpoint - previous.Midpoint) / previous.Midpoint * 100)
+	return change >= thresholdPercent
+}

trahn-trade-backend/internal/models/trade.go

@@ -0,0 +1,29 @@
+package models
+
+import "time"
+
+type Trade struct {
+	ID              int64     `json:"id"`
+	Timestamp       time.Time `json:"timestamp"`
+	TradingDay      string    `json:"tradingDay"`
+	Side            string    `json:"side"` // "buy" or "sell"
+	Price           float64   `json:"price"`
+	Quantity        float64   `json:"quantity"`
+	USDValue        float64   `json:"usdValue"`
+	GridLevel       *int      `json:"gridLevel,omitempty"`
+	TxHash          *string   `json:"txHash,omitempty"`
+	IsPaperTrade    bool      `json:"isPaperTrade"`
+	SlippagePercent *float64  `json:"slippagePercent,omitempty"`
+	GasCostETH      *float64  `json:"gasCostEth,omitempty"`
+	CreatedAt       time.Time `json:"createdAt"`
+}
+
+type TradeStats struct {
+	TotalTrades int64      `json:"totalTrades"`
+	BuyCount    int64      `json:"buyCount"`
+	SellCount   int64      `json:"sellCount"`
+	TotalVolume *float64   `json:"totalVolume"`
+	AvgPrice    *float64   `json:"avgPrice"`
+	FirstTrade  *time.Time `json:"firstTrade"`
+	LastTrade   *time.Time `json:"lastTrade"`
+}