package graph

// This file will be automatically regenerated based on the schema, any resolver
// implementations
// will be copied through when generating and any unknown code will be moved to the end.
// Code generated by github.com/99designs/gqlgen version v0.17.88

import (
	"context"
	"fmt"

	"adam-french.co.uk/backend/graph/model"
	"adam-french.co.uk/backend/models"
	"golang.org/x/crypto/bcrypt"
)

// CreateUser is the resolver for the createUser field.
func (r *mutationResolver) CreateUser(ctx context.Context, input model.CreateUserInput) (*models.User, error) {
	if !IsAdminFromCtx(ctx) {
		return nil, fmt.Errorf("admin access required")
	}

	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(input.Password), bcrypt.DefaultCost)
	if err != nil {
		return nil, err
	}

	user := models.User{Username: input.Username, Password: hashedPassword}
	if err := r.Store.DB.Create(&user).Error; err != nil {
		return nil, err
	}

	return &user, nil
}

// DeleteUser is the resolver for the deleteUser field.
func (r *mutationResolver) DeleteUser(ctx context.Context, id int) (*models.User, error) {
	if !IsAdminFromCtx(ctx) {
		return nil, fmt.Errorf("admin access required")
	}

	var user models.User
	if err := r.Store.DB.First(&user, id).Error; err != nil {
		return nil, fmt.Errorf("user not found")
	}

	if err := r.Store.DB.Delete(&user).Error; err != nil {
		return nil, err
	}

	return &user, nil
}

// SetUserAdmin is the resolver for the setUserAdmin field.
func (r *mutationResolver) SetUserAdmin(ctx context.Context, id int, admin bool) (*models.User, error) {
	if !IsAdminFromCtx(ctx) {
		return nil, fmt.Errorf("admin access required")
	}

	callerID, ok := UserIDFromCtx(ctx)
	if !ok {
		return nil, fmt.Errorf("unauthorized")
	}

	if uint(id) == callerID {
		return nil, fmt.Errorf("cannot change your own admin status")
	}

	var user models.User
	if err := r.Store.DB.First(&user, id).Error; err != nil {
		return nil, fmt.Errorf("user not found")
	}

	user.Admin = admin
	if err := r.Store.DB.Save(&user).Error; err != nil {
		return nil, err
	}

	return &user, nil
}

// Users is the resolver for the users field.
func (r *queryResolver) Users(ctx context.Context) ([]*models.User, error) {
	if !IsAdminFromCtx(ctx) {
		return nil, fmt.Errorf("admin access required")
	}
	var users []models.User
	if err := r.Store.DB.Find(&users).Error; err != nil {
		return nil, err
	}
	result := make([]*models.User, len(users))
	for i := range users {
		result[i] = &users[i]
	}
	return result, nil
}

// User is the resolver for the user field.
func (r *queryResolver) User(ctx context.Context, id int) (*models.User, error) {
	if !IsAdminFromCtx(ctx) {
		return nil, fmt.Errorf("admin access required")
	}
	var user models.User
	if err := r.Store.DB.First(&user, id).Error; err != nil {
		return nil, fmt.Errorf("user not found")
	}
	return &user, nil
}

// ID is the resolver for the id field.
func (r *userResolver) ID(ctx context.Context, obj *models.User) (int, error) {
	return int(obj.ID), nil
}

// User returns UserResolver implementation.
func (r *Resolver) User() UserResolver { return &userResolver{r} }

type userResolver struct{ *Resolver }