package handlers

import (
	"database/sql"
	"html/template"
	"log"
	"net/http"
	"synlotto-website/helpers"
	"synlotto-website/middleware"
	"synlotto-website/models"
)

type AdminLogEntry struct {
	AccessedAt string
	UserID     int
	Path       string
	IP         string
	UserAgent  string
}

func AdminAccessLogHandler(db *sql.DB) http.HandlerFunc {
	return middleware.Auth(true)(func(w http.ResponseWriter, r *http.Request) {
		context := helpers.TemplateContext(w, r, models.TemplateData{})

		rows, err := db.Query(`
			SELECT accessed_at, user_id, path, ip, user_agent
			FROM admin_access_log
			ORDER BY accessed_at DESC
			LIMIT 100
		`)
		if err != nil {
			log.Println("⚠️ Failed to load admin access logs:", err)
			http.Error(w, "Error loading logs", http.StatusInternalServerError)
			return
		}
		defer rows.Close()

		var logs []AdminLogEntry
		for rows.Next() {
			var entry AdminLogEntry
			if err := rows.Scan(&entry.AccessedAt, &entry.UserID, &entry.Path, &entry.IP, &entry.UserAgent); err != nil {
				log.Println("⚠️ Scan failed:", err)
				continue
			}
			logs = append(logs, entry)
		}
		context["AuditLogs"] = logs

		tmpl := template.Must(template.New("").Funcs(helpers.TemplateFuncs()).ParseFiles(
			"templates/layout.html",
			"templates/admin/logs/access_log.html",
		))
		_ = tmpl.ExecuteTemplate(w, "layout", context)
	})
}

func AuditLogHandler(db *sql.DB) http.HandlerFunc {
	return middleware.Auth(true)(func(w http.ResponseWriter, r *http.Request) {
		context := helpers.TemplateContext(w, r, models.TemplateData{})

		rows, err := db.Query(`
			SELECT timestamp, user_id, action, ip, user_agent
			FROM audit_log
			ORDER BY timestamp DESC
			LIMIT 100
		`)
		if err != nil {
			log.Println("❌ Failed to load audit log:", err)
			http.Error(w, "Could not load audit log", http.StatusInternalServerError)
			return
		}
		defer rows.Close()

		var logs []models.AuditEntry
		for rows.Next() {
			var entry models.AuditEntry
			err := rows.Scan(&entry.Timestamp, &entry.UserID, &entry.Action, &entry.IP, &entry.UserAgent)
			if err != nil {
				log.Println("⚠️ Failed to scan row:", err)
				continue
			}
			logs = append(logs, entry)
		}

		context["AuditLogs"] = logs

		tmpl := template.Must(template.New("").Funcs(helpers.TemplateFuncs()).ParseFiles(
			"templates/layout.html",
			"templates/admin/logs/audit.html",
		))

		err = tmpl.ExecuteTemplate(w, "layout", context)
		if err != nil {
			log.Println("❌ Failed to render audit page:", err)
			http.Error(w, "Template error", http.StatusInternalServerError)
		}
	})
}