import { t } from "@lingui/macro";

import { TemplateResult, html } from "lit";
import { customElement, property } from "lit/decorators.js";
import { ifDefined } from "lit/directives/if-defined.js";
import { until } from "lit/directives/until.js";

import {
    EventsApi,
    NotificationTransport,
    NotificationTransportModeEnum,
    PropertymappingsApi,
} from "@goauthentik/api";

import { DEFAULT_CONFIG } from "../../api/Config";
import "../../elements/forms/HorizontalFormElement";
import { ModelForm } from "../../elements/forms/ModelForm";
import { first } from "../../utils";

@customElement("ak-event-transport-form")
export class TransportForm extends ModelForm<NotificationTransport, string> {
    loadInstance(pk: string): Promise<NotificationTransport> {
        return new EventsApi(DEFAULT_CONFIG)
            .eventsTransportsRetrieve({
                uuid: pk,
            })
            .then((transport) => {
                this.onModeChange(transport.mode);
                return transport;
            });
    }

    @property({ type: Boolean })
    showWebhook = false;

    getSuccessMessage(): string {
        if (this.instance) {
            return t`Successfully updated transport.`;
        } else {
            return t`Successfully created transport.`;
        }
    }

    send = (data: NotificationTransport): Promise<NotificationTransport> => {
        if (this.instance) {
            return new EventsApi(DEFAULT_CONFIG).eventsTransportsUpdate({
                uuid: this.instance.pk || "",
                notificationTransportRequest: data,
            });
        } else {
            return new EventsApi(DEFAULT_CONFIG).eventsTransportsCreate({
                notificationTransportRequest: data,
            });
        }
    };

    renderTransportModes(): TemplateResult {
        return html`
            <option
                value=${NotificationTransportModeEnum.Email}
                ?selected=${this.instance?.mode === NotificationTransportModeEnum.Email}
            >
                ${t`Email`}
            </option>
            <option
                value=${NotificationTransportModeEnum.Webhook}
                ?selected=${this.instance?.mode === NotificationTransportModeEnum.Webhook}
            >
                ${t`Webhook (generic)`}
            </option>
            <option
                value=${NotificationTransportModeEnum.WebhookSlack}
                ?selected=${this.instance?.mode === NotificationTransportModeEnum.WebhookSlack}
            >
                ${t`Webhook (Slack/Discord)`}
            </option>
        `;
    }

    onModeChange(mode: string): void {
        if (
            mode === NotificationTransportModeEnum.Webhook ||
            mode === NotificationTransportModeEnum.WebhookSlack
        ) {
            this.showWebhook = true;
        } else {
            this.showWebhook = false;
        }
    }

    renderForm(): TemplateResult {
        return html`<form class="pf-c-form pf-m-horizontal">
            <ak-form-element-horizontal label=${t`Name`} ?required=${true} name="name">
                <input
                    type="text"
                    value="${ifDefined(this.instance?.name)}"
                    class="pf-c-form-control"
                    required
                />
            </ak-form-element-horizontal>
            <ak-form-element-horizontal label=${t`Mode`} ?required=${true} name="mode">
                <select
                    class="pf-c-form-control"
                    @change=${(ev: Event) => {
                        const current = (ev.target as HTMLInputElement).value;
                        this.onModeChange(current);
                    }}
                >
                    ${this.renderTransportModes()}
                </select>
            </ak-form-element-horizontal>
            <ak-form-element-horizontal
                ?hidden=${!this.showWebhook}
                label=${t`Webhook URL`}
                name="webhookUrl"
                ?required=${true}
            >
                <input
                    type="text"
                    value="${ifDefined(this.instance?.webhookUrl)}"
                    class="pf-c-form-control"
                />
            </ak-form-element-horizontal>
            <ak-form-element-horizontal
                ?hidden=${!this.showWebhook}
                label=${t`Webhook Mapping`}
                name="webhookMapping"
            >
                <select class="pf-c-form-control">
                    <option value="" ?selected=${this.instance?.webhookMapping === undefined}>
                        ---------
                    </option>
                    ${until(
                        new PropertymappingsApi(DEFAULT_CONFIG)
                            .propertymappingsNotificationList({})
                            .then((mappings) => {
                                return mappings.results.map((mapping) => {
                                    return html`<option
                                        value=${ifDefined(mapping.pk)}
                                        ?selected=${this.instance?.webhookMapping === mapping.pk}
                                    >
                                        ${mapping.name}
                                    </option>`;
                                });
                            }),
                        html`<option>${t`Loading...`}</option>`,
                    )}
                </select>
            </ak-form-element-horizontal>
            <ak-form-element-horizontal name="sendOnce">
                <div class="pf-c-check">
                    <input
                        type="checkbox"
                        class="pf-c-check__input"
                        ?checked=${first(this.instance?.sendOnce, false)}
                    />
                    <label class="pf-c-check__label"> ${t`Send once`} </label>
                </div>
                <p class="pf-c-form__helper-text">
                    ${t`Only send notification once, for example when sending a webhook into a chat channel.`}
                </p>
            </ak-form-element-horizontal>
        </form>`;
    }
}