import { html, LitElement } from "lit";
import { customElement, property } from "lit/decorators.js";
import { Ref, createRef, ref } from 'lit/directives/ref.js';
import { escapeXml } from ".";
import { getTimezones } from "./timezones.ts";

@customElement("create-birthday-calendar-form")
export class CreateBirthdayCalendarForm extends LitElement {
  protected override createRenderRoot() {
    return this
  }

  @property()
  principal: string = ''
  @property()
  addr_id: string = ''
  @property()
  displayname: string = ''
  @property()
  description: string = ''
  @property()
  color: string = ''

  dialog: Ref<HTMLDialogElement> = createRef()
  form: Ref<HTMLFormElement> = createRef()
  @property()
  timezones: Array<String> = []

  override render() {
    return html`
      <button @click=${() => this.dialog.value.showModal()}>Create birthday calendar</button>
      <dialog ${ref(this.dialog)}>
        <h3>Create calendar</h3>
        <form @submit=${this.submit} ${ref(this.form)}>
          <label>
            Displayname
            <input type="text" .value=${this.displayname} required @change=${e => this.displayname = e.target.value} />
          </label>
          <br>
          <label>
            Description
            <input type="text" .value=${this.description} @change=${e => this.description = e.target.value} />
          </label>
          <br>
          <label>
            Color
            <input type="color" .value=${this.color} @change=${e => this.color = e.target.value} />
          </label>
          <br>
          <button type="submit">Create</button>
          <button type="submit" @click=${event => { event.preventDefault(); this.dialog.value.close(); this.form.value.reset() }} class="cancel">Cancel</button>
      </form>
      </dialog>
        `
  }

  async submit(e: SubmitEvent) {
    e.preventDefault()
    if (!this.addr_id) {
      alert("Empty id")
      return
    }
    if (!this.displayname) {
      alert("Empty displayname")
      return
    }

    let response = await fetch(`/caldav/principal/${this.principal}/_birthdays_${this.addr_id}`, {
      method: 'MKCOL',
      headers: {
        'Content-Type': 'application/xml'
      },
      body: `
      <mkcol xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CS="http://calendarserver.org/ns/" xmlns:ICAL="http://apple.com/ns/ical/">
        <set>
          <prop>
            <displayname>${escapeXml(this.displayname)}</displayname>
            ${this.description ? `<CAL:calendar-description>${escapeXml(this.description)}</CAL:calendar-description>` : ''}
            ${this.color ? `<ICAL:calendar-color>${escapeXml(this.color)}</ICAL:calendar-color>` : ''}
            <CAL:supported-calendar-component-set>
              <CAL:comp name="VEVENT" />
            </CAL:supported-calendar-component-set>
          </prop>
        </set>
      </mkcol>
      `
    })

    if (response.status >= 400) {
      alert(`Error ${response.status}: ${await response.text()}`)
      return null
    }
    window.location.reload()
    return null
  }
}

declare global {
  interface HTMLElementTagNameMap {
    'create-calendar-form': CreateCalendarForm
  }
}