feat: GetProfileByUsername implemented

backend/internal/services/profile.go

@@ -22,8 +22,10 @@ import (
 	"easywish/internal/dto"
 	errs "easywish/internal/errors"
 	mapspecial "easywish/internal/utils/mapSpecial"
+	"errors"
 
 	"github.com/go-redis/redis/v8"
+	"github.com/jackc/pgx/v5"
 	"go.uber.org/zap"
 )
 
@@ -63,8 +65,32 @@ func (p *profileServiceImpl) GetMyProfile(cinfo dto.ClientInfo) (*dto.ProfileDto
 	return &profileDto, nil
 }
 
+// TODO: Profile privacy settings checks
 func (p *profileServiceImpl) GetProfileByUsername(cinfo dto.ClientInfo, username string) (*dto.ProfileDto, error) {
-	panic("unimplemented")
+	helper, db, err := database.NewDbHelperTransaction(p.dbctx); if err != nil {
+		p.log.Error(
+			"Failed to start transaction",	
+			zap.Error(err))
+		return nil, errs.ErrServerError
+	}
+	defer helper.Rollback()
+
+	profile, err := db.TXQueries.GetProfileByUsername(db.CTX, username); if err != nil {
+		if errors.Is(err, pgx.ErrNoRows) {
+			return nil, errs.ErrNotFound
+		}
+
+		p.log.Error(
+			"Failed to get user profile by username",	
+			zap.String("username", username),
+			zap.Error(err))
+		return nil, errs.ErrServerError
+	}
+
+	var profileDto dto.ProfileDto
+	mapspecial.MapProfileDto(profile, profileDto)
+
+	return &profileDto, nil
 }
 
 func (p *profileServiceImpl) GetProfileSettings(cinfo dto.ClientInfo) (*dto.ProfileSettingsDto, error) {