package rest

import (
	"net/http"

	hex "encoding/hex"

	gin "github.com/gin-gonic/gin"

	eth "git.pspay.io/crypto-stories/custodial/pkg/eth"
	tron "git.pspay.io/crypto-stories/custodial/pkg/tron"
	crypto "github.com/ethereum/go-ethereum/crypto"
)

type ExportV1Request struct {
	Index int `json:"index"`
}

type ExportV1Response struct {
	ETHAddress     string `json:"eth_address"`
	TRONAddress    string `json:"tron_address"`
	ETHPrivateKey  string `json:"eth_private_key"`
	TRONPrivateKey string `json:"tron_private_key"`
}

func GetPrivKeys(idx int) ExportV1Response {
	eth.InitMasterFromPrivateSettings()
	tron.InitMasterFromPrivateSettings()

	ethAccount, _ := eth.DeriveAccount(idx)
	tronAccount, _ := tron.DeriveAccount(idx)

	ethPrivateKey := crypto.FromECDSA(ethAccount.PrivateKey())
	tronPrivateKey := crypto.FromECDSA(tronAccount.PrivateKey().ToECDSA())

	// PRINT PRIVATE KEYS FOR THE ACCOUNTS
	// fmt.Println("")
	// fmt.Println("ETH  Private Key: ", hex.EncodeToString(ethPrivateKey), "Address:", ethAccount.Address())
	// fmt.Println("TRON Private Key: ", hex.EncodeToString(tronPrivateKey), "Address:", tronAccount.Address())
	// fmt.Println("")
	return ExportV1Response{
		ETHAddress:     ethAccount.Address().String(),
		TRONAddress:    tronAccount.Address(),
		ETHPrivateKey:  hex.EncodeToString(ethPrivateKey),
		TRONPrivateKey: hex.EncodeToString(tronPrivateKey),
	}
}

//	@BasePath	/api/v1
//
// ExportV1 godoc
//
//	@Summary        Export private keys for the given index
//	@Schemes
//	@Description	Export private keys for the given index (uint32)
//	@Tags			Utils
//	@Accept			json
//	@Produce		json
//	@Security		ApiKeyAuth
//	@Param			message	body		ExportV1Request	true	"Account Info"
//	@Success		200		{object}	ExportV1Response
//	@Failure		400		{object}	ErrorResponse
//	@Router			/export [post]
func ExportV1(c *gin.Context) {
	var req ExportV1Request
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}

	if req.Index < 2 {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "index is invalid: min index must is 2",
		})
		return
	}

	res := GetPrivKeys(req.Index)

	c.JSON(http.StatusOK, res)
}

type ExportBatchV1Request struct {
	Limit  int `json:"limit"`
	Offset int `json:"offset"`
}

//	@BasePath	/api/v1
//
// ExportV1 godoc
//
//	@Summary        Export private keys for the given range
//	@Schemes
//	@Description	Export private keys for the given range (uint32)
//	@Tags			Utils
//	@Accept			json
//	@Produce		json
//	@Security		ApiKeyAuth
//	@Param			message	body		ExportBatchV1Request	true	"Paging Info"
//	@Success		200		{object}	[]ExportV1Response
//	@Failure		400		{object}	ErrorResponse
//	@Router			/export-batch [post]
func ExportBatchV1(c *gin.Context) {
	var req ExportBatchV1Request
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}

	if req.Offset < 2 {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "index is invalid: min index must is 2",
		})
		return
	}

	var res []ExportV1Response
	for i := req.Offset; i < req.Offset+req.Limit; i++ {
		res = append(res, GetPrivKeys(i))
	}

	c.IndentedJSON(http.StatusOK, res)
}

//	@BasePath	/api/v1
//
// ExportSpenderKeysV1 godoc
//
//	@Summary 	    Export spender private keys
//	@Schemes

// @Description	Export spender private keys
// @Tags			Utils
// @Accept			json
// @Security		ApiKeyAuth
// @Produce		json
// @Success		200	{object}	ExportV1Response
// @Failure		400	{object}	ErrorResponse
// @Router			/export-spender-keys [get]
func ExportSpenderKeysV1(c *gin.Context) {
	keys := GetPrivKeys(eth.MAX_ACCOUNT_INDEX)
	c.IndentedJSON(http.StatusOK, keys)
}