const models = require('../../models');
const {i18n} = require('../../lib/common');
const errors = require('@tryghost/errors');

module.exports = {
    docName: 'webhooks',

    add: {
        statusCode: 201,
        headers: {
            // NOTE: remove if there is ever a 'read' method
            location: false
        },
        options: [],
        data: [],
        permissions: true,
        async query(frame) {
            const isIntegrationRequest = frame.options.context && frame.options.context.integration && frame.options.context.integration.id;

            // NOTE: this check can be removed once `webhooks.integration_id` gets foreigh ke constraint (Ghost 4.0)
            if (!isIntegrationRequest && frame.data.webhooks[0].integration_id) {
                const integration = await models.Integration.findOne({id: frame.data.webhooks[0].integration_id}, {context: {internal: true}});

                if (!integration) {
                    throw new errors.ValidationError({
                        message: i18n.t('notices.data.validation.index.schemaValidationFailed', {
                            key: 'integration_id'
                        }),
                        context: i18n.t('errors.api.webhooks.nonExistingIntegrationIdProvided.context'),
                        help: i18n.t('errors.api.webhooks.nonExistingIntegrationIdProvided.help')
                    });
                }
            }

            const webhook = await models.Webhook.getByEventAndTarget(
                frame.data.webhooks[0].event,
                frame.data.webhooks[0].target_url,
                frame.options
            );

            if (webhook) {
                throw new errors.ValidationError({message: i18n.t('errors.api.webhooks.webhookAlreadyExists')});
            }

            return models.Webhook.add(frame.data.webhooks[0], frame.options);
        }
    },

    edit: {
        permissions: {
            before: (frame) => {
                if (frame.options.context && frame.options.context.integration && frame.options.context.integration.id) {
                    return models.Webhook.findOne({id: frame.options.id})
                        .then((webhook) => {
                            if (!webhook) {
                                throw new errors.NotFoundError({
                                    message: i18n.t('errors.api.resource.resourceNotFound', {
                                        resource: 'Webhook'
                                    })
                                });
                            }

                            if (webhook.get('integration_id') !== frame.options.context.integration.id) {
                                throw new errors.NoPermissionError({
                                    message: i18n.t('errors.api.webhooks.noPermissionToEdit.message', {
                                        method: 'edit'
                                    }),
                                    context: i18n.t('errors.api.webhooks.noPermissionToEdit.context', {
                                        method: 'edit'
                                    })
                                });
                            }
                        });
                }
            }
        },
        data: [
            'name',
            'event',
            'target_url',
            'secret',
            'api_version'
        ],
        options: [
            'id'
        ],
        validation: {
            options: {
                id: {
                    required: true
                }
            }
        },
        query({data, options}) {
            return models.Webhook.edit(data.webhooks[0], Object.assign(options, {require: true}))
                .catch(models.Webhook.NotFoundError, () => {
                    throw new errors.NotFoundError({
                        message: i18n.t('errors.api.resource.resourceNotFound', {
                            resource: 'Webhook'
                        })
                    });
                });
        }
    },

    destroy: {
        statusCode: 204,
        headers: {},
        options: [
            'id'
        ],
        validation: {
            options: {
                id: {
                    required: true
                }
            }
        },
        permissions: {
            before: (frame) => {
                if (frame.options.context && frame.options.context.integration && frame.options.context.integration.id) {
                    return models.Webhook.findOne({id: frame.options.id})
                        .then((webhook) => {
                            if (!webhook) {
                                throw new errors.NotFoundError({
                                    message: i18n.t('errors.api.resource.resourceNotFound', {
                                        resource: 'Webhook'
                                    })
                                });
                            }

                            if (webhook.get('integration_id') !== frame.options.context.integration.id) {
                                throw new errors.NoPermissionError({
                                    message: i18n.t('errors.api.webhooks.noPermissionToEdit.message', {
                                        method: 'destroy'
                                    }),
                                    context: i18n.t('errors.api.webhooks.noPermissionToEdit.context', {
                                        method: 'destroy'
                                    })
                                });
                            }
                        });
                }
            }
        },
        query(frame) {
            frame.options.require = true;

            return models.Webhook.destroy(frame.options)
                .then(() => null)
                .catch(models.Webhook.NotFoundError, () => {
                    return Promise.reject(new errors.NotFoundError({
                        message: i18n.t('errors.api.resource.resourceNotFound', {
                            resource: 'Webhook'
                        })
                    }));
                });
        }
    }
};