package controller

import (
	"net/http"
	"os"
	"strings"

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

type MonitoringController interface {
	HealthCheck(ctx *gin.Context)
	ReadErrorLog(ctx *gin.Context)
}

type monitoringController struct{}

func NewMonitoringController() MonitoringController {
	return &monitoringController{}
}

func (c *monitoringController) HealthCheck(ctx *gin.Context) {
	ctx.JSON(http.StatusOK, gin.H{
		"status":  "healthy",
		"message": "Service is running",
	})
}

func (c *monitoringController) ReadErrorLog(ctx *gin.Context) {
	logFile := "gin.log"

	// Cari file error di beberapa lokasi
	locations := []string{
		"./logs/" + logFile,
		"/tmp/" + logFile,
		"/var/log/" + logFile,
		"./" + logFile,
	}

	var content string
	var found bool

	for _, location := range locations {
		if data, err := os.ReadFile(location); err == nil {
			content = string(data)
			found = true
			break
		}
	}

	if !found {
		ctx.JSON(http.StatusNotFound, gin.H{
			"error": "Error log file not found",
		})
		return
	}

	// Return sebagai plain text atau JSON
	if ctx.GetHeader("Accept") == "application/json" {
		lines := strings.Split(content, "\n")
		ctx.JSON(http.StatusOK, gin.H{
			"log_entries": lines,
			"total_lines": len(lines),
		})
	} else {
		ctx.Data(http.StatusOK, "text/plain", []byte(content))
	}
}