102 lines
3.2 KiB
Go
102 lines
3.2 KiB
Go
package handler
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import (
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"encoding/base64"
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"fmt"
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"io"
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"net/http"
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"time"
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"go-backend-template/config"
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"go-backend-template/internal/constants"
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"go-backend-template/internal/contract"
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"go-backend-template/internal/logger"
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"go-backend-template/internal/util"
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"github.com/gin-gonic/gin"
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)
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type DukcapilHandler struct {
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dukcapilService DukcapilService
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config *config.Config
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}
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func NewDukcapilHandler(dukcapilService DukcapilService, cfg *config.Config) *DukcapilHandler {
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return &DukcapilHandler{
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dukcapilService: dukcapilService,
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config: cfg,
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}
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}
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// FaceMatch handles POST /api/v1/dukcapil/face-match (1:N face recognition).
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// Accepts only an image file via multipart form. All other parameters are
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// generated or retrieved from configuration.
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func (h *DukcapilHandler) FaceMatch(c *gin.Context) {
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// Parse multipart form
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file, err := c.FormFile("image")
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if err != nil {
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logger.FromContext(c.Request.Context()).WithError(err).Error("DukcapilHandler::FaceMatch -> failed to get image file")
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h.sendValidationError(c, "image file is required", constants.MissingFieldErrorCode)
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return
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}
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// Open the uploaded file
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src, err := file.Open()
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if err != nil {
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logger.FromContext(c.Request.Context()).WithError(err).Error("DukcapilHandler::FaceMatch -> failed to open image file")
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h.sendValidationError(c, "failed to read image file", constants.MalformedFieldErrorCode)
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return
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}
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defer src.Close()
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// Read file content
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imageBytes, err := io.ReadAll(src)
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if err != nil {
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logger.FromContext(c.Request.Context()).WithError(err).Error("DukcapilHandler::FaceMatch -> failed to read image bytes")
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h.sendValidationError(c, "failed to read image file", constants.MalformedFieldErrorCode)
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return
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}
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// Convert to base64
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imageBase64 := base64.StdEncoding.EncodeToString(imageBytes)
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// Generate transaction_id (timestamp-based random ID)
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transactionID := fmt.Sprintf("TXN%d", time.Now().UnixNano())
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// Build request with config values
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req := &contract.FaceMatchRequest{
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TransactionID: transactionID,
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TransactionSource: h.config.Dukcapil.TransactionSource,
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Threshold: h.config.Dukcapil.Threshold,
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Image: imageBase64,
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IP: h.config.Dukcapil.DefaultIP,
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}
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res, err := h.dukcapilService.FaceMatch(c.Request.Context(), req)
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if err != nil {
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logger.FromContext(c.Request.Context()).WithError(err).Error("DukcapilHandler::FaceMatch -> upstream call failed")
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c.JSON(http.StatusBadGateway, &contract.ErrorResponse{
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Error: "upstream_error",
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Message: err.Error(),
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Code: http.StatusBadGateway,
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Details: map[string]interface{}{"entity": constants.DukcapilHandlerEntity},
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})
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return
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}
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logger.FromContext(c.Request.Context()).Infof("DukcapilHandler::FaceMatch -> tid=%s errorCode=%s matches=%d", res.TID, res.ErrorCode, len(res.Matches))
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util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(res), "DukcapilHandler::FaceMatch")
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}
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func (h *DukcapilHandler) sendValidationError(c *gin.Context, message, code string) {
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c.JSON(http.StatusBadRequest, &contract.ErrorResponse{
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Error: "validation_error",
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Message: message,
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Code: http.StatusBadRequest,
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Details: map[string]interface{}{
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"error_code": code,
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"entity": constants.DukcapilHandlerEntity,
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},
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})
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}
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