import { OAuthSource, SourcesApi, FlowsApi, FlowDesignationEnum, OAuthSourceUserMatchingModeEnum } from "authentik-api";
import { t } from "@lingui/macro";
import { customElement, property } from "lit-element";
import { html, TemplateResult } from "lit-html";
import { DEFAULT_CONFIG } from "../../../api/Config";
import "../../../elements/forms/FormGroup";
import "../../../elements/forms/HorizontalFormElement";
import { ifDefined } from "lit-html/directives/if-defined";
import { until } from "lit-html/directives/until";
import { first } from "../../../utils";
import { AppURLManager } from "../../../api/legacy";
import { ModelForm } from "../../../elements/forms/ModelForm";

@customElement("ak-source-oauth-form")
export class OAuthSourceForm extends ModelForm<OAuthSource, string> {

    loadInstance(pk: string): Promise<OAuthSource> {
        return new SourcesApi(DEFAULT_CONFIG).sourcesOauthRead({
            slug: pk,
        }).then(source => {
            this.showUrlOptions = first(source.type?.urlsCustomizable, false);
            return source;
        });
    }

    @property()
    modelName?: string;

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

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

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

    send = (data: OAuthSource): Promise<OAuthSource> => {
        if (this.instance) {
            return new SourcesApi(DEFAULT_CONFIG).sourcesOauthUpdate({
                slug: this.instance.slug,
                data: data
            });
        } else {
            return new SourcesApi(DEFAULT_CONFIG).sourcesOauthCreate({
                data: data
            });
        }
    };

    renderUrlOptions(): TemplateResult {
        if (!this.showUrlOptions) {
            return html``;
        }
        return html`
            <ak-form-group>
                <span slot="header">
                    ${t`URL settings`}
                </span>
                <div slot="body" class="pf-c-form">
                    <ak-form-element-horizontal
                        label=${t`Authorization URL`}
                        ?required=${true}
                        name="authorizationUrl">
                        <input type="text" value="${first(this.instance?.authorizationUrl, "")}" class="pf-c-form-control" required>
                        <p class="pf-c-form__helper-text">${t`URL the user is redirect to to consent the authorization.`}</p>
                    </ak-form-element-horizontal>
                    <ak-form-element-horizontal
                        label=${t`Access token URL`}
                        ?required=${true}
                        name="accessTokenUrl">
                        <input type="text" value="${first(this.instance?.accessTokenUrl, "")}" class="pf-c-form-control" required>
                        <p class="pf-c-form__helper-text">${t`URL used by authentik to retrieve tokens.`}</p>
                    </ak-form-element-horizontal>
                    <ak-form-element-horizontal
                        label=${t`Profile URL`}
                        ?required=${true}
                        name="profileUrl">
                        <input type="text" value="${first(this.instance?.profileUrl, "")}" class="pf-c-form-control" required>
                        <p class="pf-c-form__helper-text">${t`URL used by authentik to get user information.`}</p>
                    </ak-form-element-horizontal>
                    ${this.showRequestTokenURL ? html`<ak-form-element-horizontal
                        label=${t`Request token URL`}
                        name="requestTokenUrl">
                        <input type="text" value="${first(this.instance?.requestTokenUrl, "")}" class="pf-c-form-control">
                        <p class="pf-c-form__helper-text">${t`URL used to request the initial token. This URL is only required for OAuth 1.`}</p>
                    </ak-form-element-horizontal>
                    ` : html``}
                </div>
            </ak-form-group>`;
    }

    getRedirectURI(slug?: string): string {
        if (!slug) {
            return "";
        }
        const path = AppURLManager.sourceOAuth(slug, "callback");
        return `${window.location.protocol}//${window.location.host}${path}`;
    }

    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`Slug`}
                ?required=${true}
                name="slug">
                <input type="text" value="${ifDefined(this.instance?.slug)}" class="pf-c-form-control" required @input=${(ev: Event) => {
                    const current = (ev.target as HTMLInputElement).value;
                    const label = this.shadowRoot?.querySelector<HTMLSpanElement>("#callback-url");
                    if (!label) return;
                    label.innerText = this.getRedirectURI(current);
                }}>
                <p class="pf-c-form__helper-text">
                    ${t`Use this redirect URL:`}
                    <span id="callback-url">${this.getRedirectURI(this.instance?.slug)}</span>
                </p>
            </ak-form-element-horizontal>
            <ak-form-element-horizontal name="enabled">
                <div class="pf-c-check">
                    <input type="checkbox" class="pf-c-check__input" ?checked=${first(this.instance?.enabled, true)}>
                    <label class="pf-c-check__label">
                        ${t`Enabled`}
                    </label>
                </div>
            </ak-form-element-horizontal>
            <ak-form-element-horizontal
                label=${t`User matching mode`}
                ?required=${true}
                name="userMatchingMode">
                <select class="pf-c-form-control">
                    <option value=${OAuthSourceUserMatchingModeEnum.Identifier} ?selected=${this.instance?.userMatchingMode === OAuthSourceUserMatchingModeEnum.Identifier}>
                        ${t`Link users on unique identifier`}
                    </option>
                    <option value=${OAuthSourceUserMatchingModeEnum.UsernameLink} ?selected=${this.instance?.userMatchingMode === OAuthSourceUserMatchingModeEnum.UsernameLink}>
                        ${t`Link to a user with identical email address. Can have security implications when a source doesn't validate email addresses`}
                    </option>
                    <option value=${OAuthSourceUserMatchingModeEnum.UsernameDeny} ?selected=${this.instance?.userMatchingMode === OAuthSourceUserMatchingModeEnum.UsernameDeny}>
                        ${t`Use the user's email address, but deny enrollment when the email address already exists.`}
                    </option>
                    <option value=${OAuthSourceUserMatchingModeEnum.EmailLink} ?selected=${this.instance?.userMatchingMode === OAuthSourceUserMatchingModeEnum.EmailLink}>
                        ${t`Link to a user with identical username address. Can have security implications when a username is used with another source.`}
                    </option>
                    <option value=${OAuthSourceUserMatchingModeEnum.EmailDeny} ?selected=${this.instance?.userMatchingMode === OAuthSourceUserMatchingModeEnum.EmailDeny}>
                        ${t`Use the user's username, but deny enrollment when the username already exists.`}
                    </option>
                </select>
            </ak-form-element-horizontal>

            <ak-form-group .expanded=${true}>
                <span slot="header">
                    ${t`Protocol settings`}
                </span>
                <div slot="body" class="pf-c-form">
                    <ak-form-element-horizontal
                        label=${t`Consumer key`}
                        ?required=${true}
                        name="consumerKey">
                        <input type="text" value="${ifDefined(this.instance?.consumerKey)}" class="pf-c-form-control" required>
                    </ak-form-element-horizontal>
                    <ak-form-element-horizontal
                        label=${t`Consumer secret`}
                        ?required=${true}
                        ?writeOnly=${this.instance !== undefined}
                        name="consumerSecret">
                        <input type="text" value="${ifDefined(this.instance?.consumerSecret)}" class="pf-c-form-control" required>
                    </ak-form-element-horizontal>
                    <ak-form-element-horizontal
                        label=${t`Provider type`}
                        name="providerType">
                        <select class="pf-c-form-control" @change=${(ev: Event) => {
                            const el = (ev.target as HTMLSelectElement);
                            const selected = el.selectedOptions[0];
                            if ("data-urls-custom" in selected.attributes) {
                                this.showUrlOptions = true;
                            } else {
                                this.showUrlOptions = false;
                            }
                            if ("data-request-token" in selected.attributes) {
                                this.showRequestTokenURL = true;
                            } else {
                                this.showRequestTokenURL = false;
                            }
                            if (!this.instance) {
                                this.instance = {} as OAuthSource;
                            }
                            this.instance.providerType = selected.value;
                        }}>
                            ${until(new SourcesApi(DEFAULT_CONFIG).sourcesOauthSourceTypes().then(types => {
                                return types.map(type => {
                                    let selected = this.instance?.providerType === type.slug;
                                    if (!this.instance?.pk) {
                                        if (this.modelName?.replace("oauthsource", "") === type.slug) {
                                            selected = true;
                                        }
                                    }
                                    return html`<option
                                        ?data-urls-custom=${type.urlsCustomizable}
                                        ?data-request-token=${type.requestTokenUrl}
                                        value=${type.slug}
                                        ?selected=${selected}>
                                        ${type.name}
                                    </option>`;
                                });
                            }), html`<option>${t`Loading...`}</option>`)}
                        </select>
                    </ak-form-element-horizontal>
                </div>
            </ak-form-group>
            ${this.renderUrlOptions()}
            <ak-form-group>
                <span slot="header">
                    ${t`Flow settings`}
                </span>
                <div slot="body" class="pf-c-form">
                    <ak-form-element-horizontal
                        label=${t`Authentication flow`}
                        ?required=${true}
                        name="authenticationFlow">
                        <select class="pf-c-form-control">
                            ${until(new FlowsApi(DEFAULT_CONFIG).flowsInstancesList({
                                ordering: "pk",
                                designation: FlowDesignationEnum.Authentication,
                            }).then(flows => {
                                return flows.results.map(flow => {
                                    let selected = this.instance?.authenticationFlow === flow.pk;
                                    if (!this.instance?.pk && !this.instance?.authenticationFlow && flow.slug === "default-source-authentication") {
                                        selected = true;
                                    }
                                    return html`<option value=${ifDefined(flow.pk)} ?selected=${selected}>${flow.name} (${flow.slug})</option>`;
                                });
                            }), html`<option>${t`Loading...`}</option>`)}
                        </select>
                        <p class="pf-c-form__helper-text">${t`Flow to use when authenticating existing users.`}</p>
                    </ak-form-element-horizontal>
                    <ak-form-element-horizontal
                        label=${t`Enrollment flow`}
                        ?required=${true}
                        name="enrollmentFlow">
                        <select class="pf-c-form-control">
                            ${until(new FlowsApi(DEFAULT_CONFIG).flowsInstancesList({
                                ordering: "pk",
                                designation: FlowDesignationEnum.Enrollment,
                            }).then(flows => {
                                return flows.results.map(flow => {
                                    let selected = this.instance?.enrollmentFlow === flow.pk;
                                    if (!this.instance?.pk && !this.instance?.enrollmentFlow && flow.slug === "default-source-enrollment") {
                                        selected = true;
                                    }
                                    return html`<option value=${ifDefined(flow.pk)} ?selected=${selected}>${flow.name} (${flow.slug})</option>`;
                                });
                            }), html`<option>${t`Loading...`}</option>`)}
                        </select>
                        <p class="pf-c-form__helper-text">${t`Flow to use when enrolling new users.`}</p>
                    </ak-form-element-horizontal>
                </div>
            </ak-form-group>
        </form>`;
    }

}