package middleware

import (
	"net/http"

	"github.com/gin-gonic/gin"

	"git.gobha.me/xcaliber/chat-switchboard/database"
)

// RequireTeamAdmin returns middleware that restricts access to users who are
// admins of the team identified by :teamId in the URL path.
// System admins (role=admin) are always allowed through.
// Must be used after Auth() middleware.
func RequireTeamAdmin() gin.HandlerFunc {
	return func(c *gin.Context) {
		// System admins bypass team check
		role, _ := c.Get("role")
		if role == "admin" {
			c.Next()
			return
		}

		userID, _ := c.Get("user_id")
		teamID := c.Param("teamId")
		if teamID == "" {
			c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{
				"error": "team ID required",
			})
			return
		}

		var teamRole string
		err := database.DB.QueryRow(`
			SELECT role FROM team_members
			WHERE team_id = $1 AND user_id = $2
		`, teamID, userID).Scan(&teamRole)

		if err != nil || teamRole != "admin" {
			c.AbortWithStatusJSON(http.StatusForbidden, gin.H{
				"error": "team admin access required",
			})
			return
		}

		c.Next()
	}
}

// RequireTeamMember returns middleware that restricts access to users who
// belong to the team identified by :teamId (any role).
// System admins are always allowed through.
func RequireTeamMember() gin.HandlerFunc {
	return func(c *gin.Context) {
		role, _ := c.Get("role")
		if role == "admin" {
			c.Next()
			return
		}

		userID, _ := c.Get("user_id")
		teamID := c.Param("teamId")
		if teamID == "" {
			c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{
				"error": "team ID required",
			})
			return
		}

		var exists bool
		database.DB.QueryRow(`
			SELECT EXISTS(SELECT 1 FROM team_members WHERE team_id = $1 AND user_id = $2)
		`, teamID, userID).Scan(&exists)

		if !exists {
			c.AbortWithStatusJSON(http.StatusForbidden, gin.H{
				"error": "team membership required",
			})
			return
		}

		c.Next()
	}
}