import {css, html, LitElement} from "lit";
import {customElement} from "lit/decorators/custom-element.js";
import {property} from "lit/decorators/property.js";
import {classMap} from "lit/directives/class-map.js";
import "@shoelace-style/shoelace/dist/components/split-panel/split-panel.js";
import styles from "./EgwFramework.styles";
import {repeat} from "lit/directives/repeat.js";

/**
 * @summary Accessable, webComponent-based EGroupware framework
 *
 * @dependency sl-dropdown
 * @dependency sl-icon-button
 *
 * @slot - Current application
 * @slot banner - Very top, used for things like persistant, system wide messages.  Normally hidden.
 * @slot header - Top of page, contains logo, app icons.
 * @slot header-right - Top right, contains user info / actions.
 * @slot status - Home of the status app, it is limited in size and can be resized and hidden.
 * @slot footer - Very bottom.  Normally hidden.
 * *
 * @csspart base - Wraps it all.
 * @csspart banner -
 * @csspart header -
 * @csspart open-applications - Tab group that has the currently open applications
 * @csspart status-split - Status splitter
 * @csspart main
 * @csspart status
 * @csspart footer
 *
 * @cssproperty [--icon-size=32] - Height of icons used in the framework
 */
@customElement('egw-framework')
//@ts-ignore
export class EgwFramework extends LitElement
{
	static get styles()
	{
		return [
			styles,

			// TEMP STUFF
			css`
				:host .placeholder {
					display: none;
				}

				:host(.placeholder) .placeholder {
					width: 100%;
					display: block;
					font-size: 200%;
					text-align: center;
					background-color: var(--placeholder-background-color, silver);
				}

				.placeholder:after {
					content: " (placeholder)";
				}

				.egw_fw__base {
					--placeholder-background-color: #75bd20;
				}

				.egw_fw__status .placeholder {
					writing-mode: vertical-rl;
					text-orientation: mixed;
					height: 100%;
				}

				:host(.placeholder) [class*="left"] .placeholder {
					background-color: color-mix(in lch, var(--placeholder-background-color), rgba(.5, .5, 1, .5));
				}

				:host(.placeholder) [class*="right"] .placeholder {
					background-color: color-mix(in lch, var(--placeholder-background-color), rgba(.5, 1, .5, .5));
				}

				:host(.placeholder) [class*="footer"] .placeholder {
					background-color: color-mix(in lch, var(--placeholder-background-color), rgba(1, 1, 1, .05));
				}


				::slotted(div#egw_fw_sidebar_r) {
					position: relative;
				}
			`
		];
	}

	@property()
	layout = "default";

	@property({type: Array, attribute: "application-list"})
	applicationList = [];

	get egw()
	{
		return window.egw ?? {
			app_name: () => "",
			lang: (t) => t,
			preference: (n, app) => ""
		};
	}

	/**
	 * An application tab is chosen, show the app
	 *
	 * @param e
	 * @protected
	 */
	protected handleApplicationTabShow(e)
	{

	}

	/**
	 * Renders one application into the 9-dots application menu
	 *
	 * @param app
	 * @returns {TemplateResult<1>}
	 * @protected
	 */
	protected _applicationListAppTemplate(app)
	{
		return html`
            <sl-tooltip placement="bottom" role="menuitem" content="${app.title}">
                <et2-button-icon src="${app.icon}" aria-label="${app.title}" role="menuitem" noSubmit
                                 helptext="${app.title}"></et2-button-icon>
            </sl-tooltip>`;
	}

	protected _applicationTabTemplate(app)
	{
		return html`
            <sl-tab slot="nav" panel="${app.app}" closable aria-label="${app.title}">
                <sl-tooltip placement="bottom" content="${app.title}" hoist>
                    <et2-image src="${app.icon}"></et2-image>
                </sl-tooltip>
            </sl-tab>`;
	}

	render()
	{
		const iconSize = getComputedStyle(this).getPropertyValue("--icon-size");
		const statusPosition = this.egw?.preference("statusPosition", "common") ?? parseInt(iconSize) ?? "36";

		const classes = {
			"egw_fw__base": true
		}
		classes[`egw_fw__layout-${this.layout}`] = true;

		return html`
            <div class=${classMap(classes)} part="base">
                <div class="egw_fw__banner" part="banner" role="banner">
                    <slot name="banner"><span class="placeholder">Banner</span></slot>
                </div>
                <header class="egw_fw__header" part="header">
                    <slot name="logo"></slot>
                    <sl-dropdown class="egw_fw__app_list" role="menu">
                        <sl-icon-button slot="trigger" name="grid-3x3-gap"
                                        label="${this.egw.lang("Application list")}"
                                        aria-description="${this.egw.lang("Activate for a list of applications")}"
                        ></sl-icon-button>
                        ${repeat(this.applicationList, (app) => this._applicationListAppTemplate(app))}
                    </sl-dropdown>
                    <sl-tab-group part="open-applications" class="egw_fw__open_applications" activation="manual"
                                  role="tablist"
                                  @sl-tab-show=${this.handleApplicationTabShow}>
                        ${repeat(this.applicationList.filter(app => app.opened), (app) => this._applicationTabTemplate(app))}
                    </sl-tab-group>
                    <slot name="header"><span class="placeholder">header</span></slot>
                    <slot name="header-right"><span class="placeholder">header-right</span></slot>
                </header>
                <div class="egw_fw__divider">
                    <sl-split-panel part="status-split" position-in-pixels="${statusPosition}" primary="end"
                                    snap="150px ${iconSize} 0px"
                                    snap-threshold="${Math.min(40, parseInt(iconSize) - 5)}"
                                    aria-label="Side menu resize">
                        <main slot="start" part="main" class="egw_fw__main">
                            <slot></slot>
                        </main>
                        <sl-icon slot="divider" name="grip-vertical"></sl-icon>
                        <aside slot="end" class="egw_fw__status" part="status">
                            <slot name="status"><span class="placeholder">status</span></slot>
                        </aside>
                    </sl-split-panel>
                </div>
                <footer class="egw_fw__footer" part="footer">
                    <slot name="footer"><span class="placeholder">footer</span></slot>
                </footer>
            </div>
		`;
	}
}