package security

import (
	"net/http"
	"strings"

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

func Headers() gin.HandlerFunc {
	return func(c *gin.Context) {
		c.Header("Content-Security-Policy", "default-src 'self'; base-uri 'self'; frame-ancestors 'none'; form-action 'self'")
		c.Header("X-Content-Type-Options", "nosniff")
		c.Header("X-Frame-Options", "DENY")
		c.Header("Referrer-Policy", "strict-origin-when-cross-origin")
		c.Header("Permissions-Policy", "camera=(), microphone=(), geolocation=()")
		c.Next()
	}
}

func CORS(allowedOrigins []string) gin.HandlerFunc {
	allowed := map[string]bool{}
	for _, origin := range allowedOrigins {
		allowed[strings.TrimSpace(origin)] = true
	}

	return func(c *gin.Context) {
		origin := c.GetHeader("Origin")
		if allowed[origin] {
			c.Header("Access-Control-Allow-Origin", origin)
			c.Header("Access-Control-Allow-Credentials", "true")
			c.Header("Access-Control-Allow-Headers", "Authorization, Content-Type")
			c.Header("Access-Control-Allow-Methods", "GET, POST, PATCH, DELETE, OPTIONS")
		}

		if c.Request.Method == http.MethodOptions {
			c.AbortWithStatus(http.StatusNoContent)
			return
		}

		c.Next()
	}
}