417 lines
8.9 KiB
TypeScript
417 lines
8.9 KiB
TypeScript
import { FolkShape } from "./folk-shape";
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import { css, html } from "./tags";
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const styles = css`
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:host {
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background: white;
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border-radius: 8px;
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box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
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min-width: 320px;
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min-height: 400px;
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}
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.header {
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display: flex;
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align-items: center;
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justify-content: space-between;
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padding: 8px 12px;
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background: linear-gradient(135deg, #ec4899, #8b5cf6);
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color: white;
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border-radius: 8px 8px 0 0;
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font-size: 12px;
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font-weight: 600;
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cursor: move;
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}
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.header-title {
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display: flex;
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align-items: center;
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gap: 6px;
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}
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.header-actions {
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display: flex;
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gap: 4px;
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}
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.header-actions button {
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background: transparent;
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border: none;
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color: white;
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cursor: pointer;
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padding: 2px 6px;
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border-radius: 4px;
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font-size: 14px;
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}
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.header-actions button:hover {
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background: rgba(255, 255, 255, 0.2);
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}
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.content {
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display: flex;
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flex-direction: column;
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height: calc(100% - 36px);
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overflow: hidden;
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}
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.prompt-area {
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padding: 12px;
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border-bottom: 1px solid #e2e8f0;
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}
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.prompt-input {
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width: 100%;
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padding: 10px 12px;
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border: 2px solid #e2e8f0;
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border-radius: 8px;
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font-size: 13px;
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resize: none;
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outline: none;
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font-family: inherit;
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}
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.prompt-input:focus {
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border-color: #8b5cf6;
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}
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.controls {
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display: flex;
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gap: 8px;
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margin-top: 8px;
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}
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.generate-btn {
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flex: 1;
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padding: 8px 16px;
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background: linear-gradient(135deg, #ec4899, #8b5cf6);
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color: white;
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border: none;
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border-radius: 6px;
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font-size: 13px;
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font-weight: 600;
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cursor: pointer;
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transition: opacity 0.2s;
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}
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.generate-btn:hover {
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opacity: 0.9;
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}
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.generate-btn:disabled {
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opacity: 0.5;
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cursor: not-allowed;
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}
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.image-area {
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flex: 1;
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padding: 12px;
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overflow-y: auto;
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display: flex;
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flex-direction: column;
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gap: 12px;
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}
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.placeholder {
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flex: 1;
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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color: #94a3b8;
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text-align: center;
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gap: 8px;
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}
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.placeholder-icon {
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font-size: 48px;
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opacity: 0.5;
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}
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.generated-image {
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width: 100%;
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border-radius: 8px;
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box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
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}
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.image-item {
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position: relative;
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}
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.image-prompt {
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font-size: 11px;
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color: #64748b;
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margin-top: 4px;
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padding: 4px 8px;
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background: #f1f5f9;
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border-radius: 4px;
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}
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.loading {
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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padding: 24px;
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gap: 12px;
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}
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.spinner {
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width: 32px;
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height: 32px;
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border: 3px solid #e2e8f0;
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border-top-color: #8b5cf6;
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border-radius: 50%;
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animation: spin 1s linear infinite;
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}
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@keyframes spin {
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to { transform: rotate(360deg); }
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}
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.error {
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color: #ef4444;
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padding: 12px;
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background: #fef2f2;
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border-radius: 6px;
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font-size: 13px;
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}
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.style-select {
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padding: 6px 10px;
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border: 2px solid #e2e8f0;
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border-radius: 6px;
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font-size: 12px;
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background: white;
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cursor: pointer;
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}
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`;
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export interface GeneratedImage {
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id: string;
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prompt: string;
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url: string;
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timestamp: Date;
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}
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declare global {
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interface HTMLElementTagNameMap {
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"folk-image-gen": FolkImageGen;
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}
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}
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export class FolkImageGen extends FolkShape {
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static override tagName = "folk-image-gen";
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static {
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const sheet = new CSSStyleSheet();
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const parentRules = Array.from(FolkShape.styles.cssRules)
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.map((r) => r.cssText)
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.join("\n");
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const childRules = Array.from(styles.cssRules)
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.map((r) => r.cssText)
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.join("\n");
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sheet.replaceSync(`${parentRules}\n${childRules}`);
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this.styles = sheet;
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}
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#images: GeneratedImage[] = [];
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#isLoading = false;
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#error: string | null = null;
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#promptInput: HTMLTextAreaElement | null = null;
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#styleSelect: HTMLSelectElement | null = null;
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#imageArea: HTMLElement | null = null;
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#generateBtn: HTMLButtonElement | null = null;
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get images() {
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return this.#images;
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}
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override createRenderRoot() {
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const root = super.createRenderRoot();
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const wrapper = document.createElement("div");
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wrapper.innerHTML = html`
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<div class="header">
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<span class="header-title">
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<span>🎨</span>
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<span>Image Gen</span>
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</span>
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<div class="header-actions">
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<button class="close-btn" title="Close">×</button>
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</div>
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</div>
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<div class="content">
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<div class="prompt-area">
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<textarea class="prompt-input" placeholder="Describe the image you want to generate..." rows="3"></textarea>
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<div class="controls">
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<select class="style-select">
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<option value="illustration">Illustration</option>
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<option value="photorealistic">Photorealistic</option>
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<option value="painting">Painting</option>
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<option value="sketch">Sketch</option>
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<option value="punk-zine">Punk Zine</option>
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</select>
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<button class="generate-btn">Generate</button>
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</div>
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</div>
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<div class="image-area">
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<div class="placeholder">
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<span class="placeholder-icon">🖼️</span>
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<span>Enter a prompt and click Generate</span>
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</div>
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</div>
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</div>
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`;
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// Replace the container div (slot's parent) with our wrapper
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const slot = root.querySelector("slot");
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const containerDiv = slot?.parentElement as HTMLElement;
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if (containerDiv) {
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containerDiv.replaceWith(wrapper);
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}
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this.#promptInput = wrapper.querySelector(".prompt-input");
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this.#styleSelect = wrapper.querySelector(".style-select");
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this.#imageArea = wrapper.querySelector(".image-area");
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this.#generateBtn = wrapper.querySelector(".generate-btn");
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const closeBtn = wrapper.querySelector(".close-btn") as HTMLButtonElement;
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// Generate button handler
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this.#generateBtn?.addEventListener("click", (e) => {
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e.stopPropagation();
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this.#generate();
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});
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// Enter key in prompt
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this.#promptInput?.addEventListener("keydown", (e) => {
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if (e.key === "Enter" && !e.shiftKey) {
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e.preventDefault();
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this.#generate();
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}
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});
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// Prevent drag on input
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this.#promptInput?.addEventListener("pointerdown", (e) => e.stopPropagation());
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// Close button
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closeBtn.addEventListener("click", (e) => {
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e.stopPropagation();
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this.dispatchEvent(new CustomEvent("close"));
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});
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return root;
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}
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async #generate() {
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const prompt = this.#promptInput?.value.trim();
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if (!prompt || this.#isLoading) return;
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const style = this.#styleSelect?.value || "illustration";
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this.#isLoading = true;
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this.#error = null;
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if (this.#generateBtn) this.#generateBtn.disabled = true;
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this.#renderLoading();
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try {
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// Call backend API (to be implemented)
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const response = await fetch("/api/image-gen", {
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method: "POST",
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headers: { "Content-Type": "application/json" },
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body: JSON.stringify({ prompt, style }),
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});
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if (!response.ok) {
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throw new Error(`Generation failed: ${response.statusText}`);
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}
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const result = await response.json();
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const image: GeneratedImage = {
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id: crypto.randomUUID(),
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prompt,
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url: result.url || result.image_url,
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timestamp: new Date(),
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};
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this.#images.unshift(image);
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this.#renderImages();
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this.dispatchEvent(new CustomEvent("image-generated", { detail: { image } }));
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// Clear input
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if (this.#promptInput) this.#promptInput.value = "";
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} catch (error) {
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this.#error = error instanceof Error ? error.message : "Generation failed";
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this.#renderError();
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} finally {
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this.#isLoading = false;
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if (this.#generateBtn) this.#generateBtn.disabled = false;
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}
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}
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#renderLoading() {
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if (!this.#imageArea) return;
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this.#imageArea.innerHTML = `
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<div class="loading">
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<div class="spinner"></div>
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<span>Generating image...</span>
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</div>
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`;
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}
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#renderError() {
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if (!this.#imageArea) return;
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this.#imageArea.innerHTML = `
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<div class="error">${this.#escapeHtml(this.#error || "Unknown error")}</div>
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${this.#images.length > 0 ? this.#renderImageList() : '<div class="placeholder"><span class="placeholder-icon">🖼</span><span>Try again with a different prompt</span></div>'}
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`;
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}
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#renderImages() {
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if (!this.#imageArea) return;
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if (this.#images.length === 0) {
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this.#imageArea.innerHTML = `
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<div class="placeholder">
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<span class="placeholder-icon">🖼</span>
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<span>Enter a prompt and click Generate</span>
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</div>
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`;
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return;
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}
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this.#imageArea.innerHTML = this.#renderImageList();
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}
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#renderImageList(): string {
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return this.#images
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.map(
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(img) => `
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<div class="image-item">
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<img class="generated-image" src="${this.#escapeHtml(img.url)}" alt="${this.#escapeHtml(img.prompt)}" loading="lazy" />
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<div class="image-prompt">${this.#escapeHtml(img.prompt)}</div>
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</div>
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`
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)
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.join("");
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}
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#escapeHtml(text: string): string {
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const div = document.createElement("div");
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div.textContent = text;
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return div.innerHTML;
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}
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override toJSON() {
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return {
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...super.toJSON(),
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type: "folk-image-gen",
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images: this.images.map((img) => ({
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...img,
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timestamp: img.timestamp.toISOString(),
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})),
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};
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}
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}
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