/*
shottower
Copyright (C) 2022 RÃ©my Boulanouar

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
/*
 * Shottower
 *
 * Shottower is the open source version of Shotstack which is a video, image and audio editing service that allows for the automated generation of videos, images and audio using JSON and a RESTful API.  You arrange and configure an edit and POST it to the API which will render your media and provide a file  location when complete.  For more details visit [shottower](https://github.com/DblK/shottower) or checkout our [getting started](https://shotstack.io/docs/guide/) documentation.  There are two main API's, one for editing and generating assets (Edit API) and one for managing hosted assets (Serve API).  The Edit API base URL is: <b>http://0.0.0.0:4000/{version}</b>  The Serve API base URL is: <b>http://0.0.0.0:4000/serve/{version}</b>
 *
 * API version: stage
 * Generated by: OpenAPI Generator (https://openapi-generator.tech)
 */

package openapi

import (
	"errors"
	"fmt"
	"net/http"

	"github.com/spf13/cast"
)

var (
	// ErrTypeAssertionError is thrown when type an interface does not match the asserted type
	ErrTypeAssertionError = errors.New("unable to assert type")
)

// ParsingError indicates that an error has occurred when parsing request parameters
type ParsingError struct {
	Err error
}

func (e *ParsingError) Unwrap() error {
	return e.Err
}

func (e *ParsingError) Error() string {
	return e.Err.Error()
}

// RequiredError indicates that an error has occurred when parsing request parameters
type RequiredError struct {
	Schema string
	Field  string
}

func (e *RequiredError) Error() string {
	return fmt.Sprintf("required field [%s].'%s' is zero value.", e.Schema, e.Field)
}

type EnumError struct {
	Schema string
	Field  string
	Value  interface{}
}

func (e *EnumError) Error() string {
	return fmt.Sprintf("enum field [%s].'%s' has not authorized value '%s'.", e.Schema, e.Field, cast.ToString(e.Value))
}

// ErrorHandler defines the required method for handling error. You may implement it and inject this into a controller if
// you would like errors to be handled differently from the DefaultErrorHandler
type ErrorHandler func(w http.ResponseWriter, r *http.Request, err error, result *ImplResponse)

// DefaultErrorHandler defines the default logic on how to handle errors from the controller. Any errors from parsing
// request params will return a StatusBadRequest. Otherwise, the error code originating from the servicer will be used.
func DefaultErrorHandler(w http.ResponseWriter, r *http.Request, err error, result *ImplResponse) {
	if _, ok := err.(*ParsingError); ok {
		// Handle parsing errors
		_ = EncodeJSONResponse(err.Error(), func(i int) *int { return &i }(http.StatusBadRequest), w)
	} else if _, ok := err.(*RequiredError); ok {
		// Handle missing required errors
		_ = EncodeJSONResponse(err.Error(), func(i int) *int { return &i }(http.StatusUnprocessableEntity), w)
	} else if _, ok := err.(*EnumError); ok {
		// Handle missing required errors
		_ = EncodeJSONResponse(err.Error(), func(i int) *int { return &i }(http.StatusUnprocessableEntity), w)
	} else {
		// Handle all other errors
		_ = EncodeJSONResponse(err.Error(), &result.Code, w)
	}
}
