// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// 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/>.

package v1

import (
	"net/http"

	"github.com/gin-gonic/gin"
	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
	"github.com/superseriousbusiness/gotosocial/internal/oauth"
)

// FilterPOSTHandler swagger:operation POST /api/v1/filters filterV1Post
//
// Create a single filter.
//
//	---
//	tags:
//	- filters
//
//	consumes:
//	- application/json
//	- application/xml
//	- application/x-www-form-urlencoded
//
//	produces:
//	- application/json
//
//	parameters:
//	-
//		name: phrase
//		in: formData
//		required: true
//		description: |-
//			The text to be filtered.
//
//			Sample: fnord
//		maxLength: 40
//		type: string
//	-
//		name: context[]
//		in: formData
//		required: true
//		description: |-
//			The contexts in which the filter should be applied.
//
//			Sample: home, public
//		enum:
//			- home
//			- notifications
//			- public
//			- thread
//			- account
//		type: array
//		items:
//			type:
//				string
//		collectionFormat: multi
//		minItems: 1
//		uniqueItems: true
//	-
//		name: expires_in
//		in: formData
//		description: |-
//			Number of seconds from now that the filter should expire. If omitted, filter never expires.
//
//			Sample: 86400
//		type: number
//	-
//		name: irreversible
//		in: formData
//		description: |-
//			Should matching entities be removed from the user's timelines/views, instead of hidden? Not supported yet.
//
//			Sample: false
//		type: boolean
//		default: false
//	-
//		name: whole_word
//		in: formData
//		description: |-
//			Should the filter consider word boundaries?
//
//			Sample: true
//		type: boolean
//		default: false
//
//	security:
//	- OAuth2 Bearer:
//		- write:filters
//
//	responses:
//		'200':
//			name: filter
//			description: New filter.
//			schema:
//				"$ref": "#/definitions/filterV1"
//		'400':
//			description: bad request
//		'401':
//			description: unauthorized
//		'404':
//			description: not found
//		'406':
//			description: not acceptable
//		'422':
//			description: unprocessable content
//		'500':
//			description: internal server error
func (m *Module) FilterPOSTHandler(c *gin.Context) {
	authed, err := oauth.Authed(c, true, true, true, true)
	if err != nil {
		apiutil.ErrorHandler(c, gtserror.NewErrorUnauthorized(err, err.Error()), m.processor.InstanceGetV1)
		return
	}

	if _, err := apiutil.NegotiateAccept(c, apiutil.JSONAcceptHeaders...); err != nil {
		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
		return
	}

	form := &apimodel.FilterCreateUpdateRequestV1{}
	if err := c.ShouldBind(form); err != nil {
		apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGetV1)
		return
	}

	if err := validateNormalizeCreateUpdateFilter(form); err != nil {
		apiutil.ErrorHandler(c, gtserror.NewErrorUnprocessableEntity(err, err.Error()), m.processor.InstanceGetV1)
		return
	}

	apiFilter, errWithCode := m.processor.FiltersV1().Create(c.Request.Context(), authed.Account, form)
	if errWithCode != nil {
		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
		return
	}

	apiutil.JSON(c, http.StatusOK, apiFilter)
}