package service

import (
	"bufio"
	"cybertron/pkg/encoder"
	"cybertron/pkg/kafka/producer"
	"cybertron/pkg/log"
	"encoding/json"
	"fmt"
	"github.com/gin-gonic/gin"
	"gorm.io/gorm"
	"net/http"
)

type ExceptionService struct {
	logger        *log.Logger
	dbClient      *gorm.DB
	kafkaProducer producer.KProducer
}

type Frame struct {
	Filename string `json:"filename"`
	Function string `json:"function"`
	InApp    bool   `json:"in_app"`
	Lineno   int    `json:"lineno,omitempty"`
	Colno    int    `json:"colno,omitempty"`
}

type Stacktrace struct {
	Frames []Frame `json:"frames"`
}

type ExceptionValue struct {
	Type       string     `json:"type"`
	Value      string     `json:"value"`
	Stacktrace Stacktrace `json:"stacktrace"`
	ProjectId  string     `json:"project_id,omitempty"`
	ReleaseId  string     `json:"release_id,omitempty"`
}

type Exception struct {
	Values []ExceptionValue `json:"values"`
}
type Payload struct {
	Exception Exception `json:"exception"`
}

func NewExceptionService(logger *log.Logger, dbClient *gorm.DB, kafkaProducer producer.KProducer) *ExceptionService {
	return &ExceptionService{
		logger:        logger,
		dbClient:      dbClient,
		kafkaProducer: kafkaProducer,
	}
}

func (exceptionService *ExceptionService) CatchErrors(c *gin.Context) {
	scanner := bufio.NewScanner(c.Request.Body)
	var lines []string

	for scanner.Scan() {
		lines = append(lines, scanner.Text())
	}

	var jsonData Payload
	projectID := c.Param("projectId")

	err := json.Unmarshal([]byte(lines[2]), &jsonData)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Second line is not valid JSON"})
		return
	}

	for _, errorItem := range jsonData.Exception.Values {
		errorItem.ProjectId = projectID
		errorItem.ReleaseId = "release-1"
		err := exceptionService.kafkaProducer.PublishEvent(errorItem, "kafka-stream", "", nil, encoder.JsonEncoderInstance)

		if err != nil {
			fmt.Println("Failed to push error to kafka")
		}
	}

	c.JSON(http.StatusOK, gin.H{"status": "success"})
}