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`;
// Replace the container div (slot's parent) with our wrapper
const containerDiv = root.querySelector(":scope > div");
if (containerDiv) {
containerDiv.replaceWith(wrapper);
}
this.#messagesEl = wrapper.querySelector(".messages");
this.#promptInput = wrapper.querySelector(".prompt-input");
this.#modelSelect = wrapper.querySelector(".model-select");
this.#sendBtn = wrapper.querySelector(".send-btn");
const clearBtn = wrapper.querySelector(".clear-btn") as HTMLButtonElement;
const closeBtn = wrapper.querySelector(".close-btn") as HTMLButtonElement;
// Send button
this.#sendBtn?.addEventListener("click", (e) => {
e.stopPropagation();
this.#send();
});
// Enter key (without shift)
this.#promptInput?.addEventListener("keydown", (e) => {
if (e.key === "Enter" && !e.shiftKey) {
e.preventDefault();
this.#send();
}
});
// Model select
this.#modelSelect?.addEventListener("change", () => {
this.#model = this.#modelSelect?.value || "gemini-1.5-flash";
});
// Clear button
clearBtn.addEventListener("click", (e) => {
e.stopPropagation();
this.#clearChat();
});
// Prevent drag on inputs
this.#promptInput?.addEventListener("pointerdown", (e) => e.stopPropagation());
// Close button
closeBtn.addEventListener("click", (e) => {
e.stopPropagation();
this.dispatchEvent(new CustomEvent("close"));
});
return root;
}
async #send() {
const content = this.#promptInput?.value.trim();
if (!content || this.#isStreaming) return;
// Add user message
const userMessage: ChatMessage = {
id: crypto.randomUUID(),
role: "user",
content,
timestamp: new Date(),
};
this.#messages.push(userMessage);
// Clear input
if (this.#promptInput) this.#promptInput.value = "";
this.#isStreaming = true;
this.#error = null;
if (this.#sendBtn) this.#sendBtn.disabled = true;
this.#renderMessages(true);
try {
const response = await fetch("/api/prompt", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
messages: this.#messages.map((m) => ({
role: m.role,
content: m.content,
})),
model: this.#model,
}),
});
if (!response.ok) {
throw new Error(`Request failed: ${response.statusText}`);
}
const result = await response.json();
const assistantMessage: ChatMessage = {
id: crypto.randomUUID(),
role: "assistant",
content: result.content || result.text || result.message,
timestamp: new Date(),
};
this.#messages.push(assistantMessage);
this.dispatchEvent(
new CustomEvent("message", { detail: { message: assistantMessage } })
);
} catch (error) {
this.#error = error instanceof Error ? error.message : "Request failed";
// Remove the user message if we failed
this.#messages.pop();
} finally {
this.#isStreaming = false;
if (this.#sendBtn) this.#sendBtn.disabled = false;
this.#renderMessages(false);
}
}
#clearChat() {
this.#messages = [];
this.#error = null;
this.#renderMessages(false);
}
#renderMessages(streaming: boolean) {
if (!this.#messagesEl) return;
if (this.#messages.length === 0 && !this.#error) {
this.#messagesEl.innerHTML = `