// Copyright 2023, 2024 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package forgefed

import (
	"time"

	"code.gitea.io/gitea/modules/validation"

	ap "github.com/go-ap/activitypub"
)

// ForgeLike activity data type
// swagger:model
type ForgeUndoLike struct {
	// swagger:ignore
	ap.Activity
}

func NewForgeUndoLike(actorIRI, objectIRI string, startTime time.Time) (ForgeUndoLike, error) {
	result := ForgeUndoLike{}
	result.Type = ap.UndoType
	result.Actor = ap.IRI(actorIRI)
	result.StartTime = startTime

	like := ap.Activity{}
	like.Type = ap.LikeType
	like.Actor = ap.IRI(actorIRI)
	like.Object = ap.IRI(objectIRI)
	result.Object = &like

	if valid, err := validation.IsValid(result); !valid {
		return ForgeUndoLike{}, err
	}
	return result, nil
}

func (undo *ForgeUndoLike) UnmarshalJSON(data []byte) error {
	return undo.Activity.UnmarshalJSON(data)
}

func (undo ForgeUndoLike) Validate() []string {
	var result []string
	result = append(result, validation.ValidateNotEmpty(string(undo.Type), "type")...)
	result = append(result, validation.ValidateOneOf(string(undo.Type), []any{"Undo"}, "type")...)

	if undo.Actor == nil {
		result = append(result, "Actor should not be nil.")
	} else {
		result = append(result, validation.ValidateNotEmpty(undo.Actor.GetID().String(), "actor")...)
	}

	result = append(result, validation.ValidateNotEmpty(undo.StartTime.String(), "startTime")...)
	if undo.StartTime.IsZero() {
		result = append(result, "StartTime was invalid.")
	}

	if undo.Object == nil {
		result = append(result, "object should not be empty.")
	} else if activity, ok := undo.Object.(*ap.Activity); !ok {
		result = append(result, "object is not of type Activity")
	} else {
		result = append(result, validation.ValidateNotEmpty(string(activity.Type), "type")...)
		result = append(result, validation.ValidateOneOf(string(activity.Type), []any{"Like"}, "type")...)

		if activity.Actor == nil {
			result = append(result, "Object.Actor should not be nil.")
		} else {
			result = append(result, validation.ValidateNotEmpty(activity.Actor.GetID().String(), "actor")...)
		}

		if activity.Object == nil {
			result = append(result, "Object.Object should not be nil.")
		} else {
			result = append(result, validation.ValidateNotEmpty(activity.Object.GetID().String(), "object")...)
		}
	}
	return result
}