package api

import (
	"context"
	"git.aiterp.net/stufflog3/stufflog3-api/internal/auth"
	"git.aiterp.net/stufflog3/stufflog3-api/internal/database"
	"git.aiterp.net/stufflog3/stufflog3-api/internal/models"
	"git.aiterp.net/stufflog3/stufflog3-api/internal/slerrors"
	"github.com/gin-gonic/gin"
	"net/http"
	"strconv"
	"strings"
)

func handler(key string, callback func(c *gin.Context) (interface{}, error)) gin.HandlerFunc {
	return func(c *gin.Context) {
		res, err := callback(c)
		if err != nil {
			slerrors.Respond(c, err)
			return
		}

		resJson := make(map[string]interface{}, 1)

		if s := getScope(c); s != nil {
			options := ScopeOptions{
				StatusLabels: models.StatusLabels,
			}

			if s.Stats != nil && !strings.Contains(c.FullPath(), "/stats/") {
				options.Stats = make(map[int]models.Stat)
				for _, stat := range s.Stats {
					options.Stats[stat.ID] = stat
				}
			}
			options.Members = make(map[string]string)
			for _, member := range s.Members {
				options.Members[member.ID] = member.Name
			}
			resJson["scopeInfo"] = options
		}
		resJson[key] = res

		c.JSON(200, resJson)
	}
}

type ScopeOptions struct {
	StatusLabels map[models.Status]string `json:"statusLabels"`
	Stats        map[int]models.Stat      `json:"stats,omitempty"`
	Members      map[string]string        `json:"members,omitempty"`
}

func reqInt(c *gin.Context, key string) (int, error) {
	v, err := strconv.Atoi(c.Param(key))
	if err != nil {
		return 0, slerrors.BadRequest(key + " parameter must be a number")
	}

	return v, nil
}

var scopeIdContextKey = struct{ stuff string }{stuff: "Things"}

func scopeIDMiddleware(db database.Database) gin.HandlerFunc {
	return func(c *gin.Context) {
		scopeID, err := strconv.Atoi(c.Param("scope_id"))
		if err != nil {
			c.AbortWithStatusJSON(http.StatusUnauthorized, slerrors.ErrorResponse{
				Code:    http.StatusBadRequest,
				Message: "Invalid scope ID in path!",
			})

			return
		}

		scope, err := db.Scopes().Find(c.Request.Context(), scopeID, strings.Contains(c.FullPath(), "/stats/") || c.Request.Method != "GET")
		if err != nil || !scope.HasMember(auth.UserID(c)) {
			c.AbortWithStatusJSON(http.StatusUnauthorized, slerrors.ErrorResponse{
				Code:    http.StatusNotFound,
				Message: "Scope not found or you don't have permission to it!",
			})

			return
		}

		c.Request = c.Request.WithContext(
			context.WithValue(c.Request.Context(), &scopeIdContextKey, scope),
		)
	}
}

func getScope(c *gin.Context) *models.Scope {
	scope := c.Request.Context().Value(&scopeIdContextKey)
	if scope == nil {
		return nil
	}

	return scope.(*models.Scope)
}