package handlers

import (
	"database/sql"
	"net/http"

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

type SettingsHandler struct {
	db *sql.DB
}

func NewSettingsHandler(db *sql.DB) *SettingsHandler {
	return &SettingsHandler{db: db}
}

func (h *SettingsHandler) GetSettings(c *gin.Context) {
	settings := make(map[string]string)
	rows, err := h.db.Query(`SELECT key, value FROM settings`)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	defer rows.Close()
	for rows.Next() {
		var k, v string
		if rows.Scan(&k, &v) == nil {
			settings[k] = v
		}
	}
	c.JSON(http.StatusOK, settings)
}

func (h *SettingsHandler) UpdateSettings(c *gin.Context) {
	var body map[string]string
	if err := c.ShouldBindJSON(&body); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid request body"})
		return
	}
	tx, err := h.db.Begin()
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	for key, val := range body {
		_, err := tx.Exec(`INSERT OR REPLACE INTO settings (key, value) VALUES (?, ?)`, key, val)
		if err != nil {
			tx.Rollback()
			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
			return
		}
	}
	if err := tx.Commit(); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"ok": true})
}