package http

import (
	"encoding/json"
	"fmt"
	"net/http"
	"strings"
	"time"

	"git.javil.eu/jacob1123/budgeteer/postgres"
	"github.com/gin-gonic/gin"
	"github.com/google/uuid"
)

type NewTransactionPayload struct {
	Date  JSONDate `json:"date"`
	Payee struct {
		ID   uuid.NullUUID
		Name string
	} `json:"payee"`
	Category struct {
		ID   uuid.NullUUID
		Name string
	} `json:"category"`
	Memo     string    `json:"memo"`
	Amount   string    `json:"amount"`
	BudgetID uuid.UUID `json:"budget_id"`
}

type JSONDate time.Time

// Implement Marshaler and Unmarshaler interface
func (j *JSONDate) UnmarshalJSON(b []byte) error {
	s := strings.Trim(string(b), "\"")
	t, err := time.Parse("2006-01-02", s)
	if err != nil {
		return err
	}
	*j = JSONDate(t)
	return nil
}

func (j JSONDate) MarshalJSON() ([]byte, error) {
	return json.Marshal(time.Time(j))
}

// Maybe a Format function for printing your date
func (j JSONDate) Format(s string) string {
	t := time.Time(j)
	return t.Format(s)
}

func (h *Handler) newTransaction(c *gin.Context) {
	var payload NewTransactionPayload
	err := c.BindJSON(&payload)
	if err != nil {
		c.AbortWithError(http.StatusInternalServerError, err)
		return
	}

	fmt.Printf("%v\n", payload)
	return

	transactionAccountID, err := getUUID(c, "account_id")
	if err != nil {
		c.AbortWithError(http.StatusNotAcceptable, fmt.Errorf("account_id: %w", err))
		return
	}

	amount := postgres.Numeric{}
	amount.Set(payload.Amount)

	transactionUUID, err := getNullUUIDFromParam(c, "transactionid")
	if err != nil {
		c.AbortWithError(http.StatusInternalServerError, fmt.Errorf("parse transaction id: %w", err))
		return
	}

	if !transactionUUID.Valid {
		new := postgres.CreateTransactionParams{
			Memo:       payload.Memo,
			Date:       time.Time(payload.Date),
			Amount:     amount,
			AccountID:  transactionAccountID,
			PayeeID:    payload.Payee.ID,    //TODO handle new payee
			CategoryID: payload.Category.ID, //TODO handle new category
		}
		_, err = h.Service.CreateTransaction(c.Request.Context(), new)
		if err != nil {
			c.AbortWithError(http.StatusInternalServerError, fmt.Errorf("create transaction: %w", err))
		}

		return
	}

	_, delete := c.GetPostForm("delete")
	if delete {
		err = h.Service.DeleteTransaction(c.Request.Context(), transactionUUID.UUID)
		if err != nil {
			c.AbortWithError(http.StatusInternalServerError, fmt.Errorf("delete transaction: %w", err))
		}
		return
	}

	update := postgres.UpdateTransactionParams{
		ID:         transactionUUID.UUID,
		Memo:       payload.Memo,
		Date:       time.Time(payload.Date),
		Amount:     amount,
		AccountID:  transactionAccountID,
		PayeeID:    payload.Payee.ID,    //TODO handle new payee
		CategoryID: payload.Category.ID, //TODO handle new category
	}
	err = h.Service.UpdateTransaction(c.Request.Context(), update)
	if err != nil {
		c.AbortWithError(http.StatusInternalServerError, fmt.Errorf("update transaction: %w", err))
	}
}