/**
 * pi-gitea Extension — entry point
 *
 * Registers Gitea tools (read + write) and optional webhook server.
 * Supports @mention routing for multi-bot coordination.
 */

import registerReadTools from "./tools/read-tools.js";
import registerWriteTools from "./tools/write-tools.js";
import {
	startWebhookServer, stopWebhookServer,
	startPolling, stopPolling,
	setSendMessage, getTrackedRepos, setRepoConfig,
} from "./webhook/server.js";
import type { ExtensionAPI } from "@mariozechner/pi-coding-agent";
import { Type } from "@sinclair/typebox";

export default function (pi: ExtensionAPI) {
	registerReadTools(pi);
	registerWriteTools(pi);

	// ── Repo config tool ─────────────────────────────────────────────────────

	pi.registerTool({
		name: "gitea_repo_config",
		label: "Gitea: Configure Repo Response Mode",
		description:
			'Set how the bot responds to events on a repo. ' +
			'"all" = respond to every event. ' +
			'"mention" = respond only when @mentioned or assigned. ' +
			'Collab repos default to "mention", own repos default to "all".',
		parameters: Type.Object({
			repo: Type.String({ description: "Repository (owner/name)" }),
			respondTo: Type.String({ description: '"all" or "mention"' }),
		}),
		async execute(_id, params) {
			const mode = params.respondTo as "all" | "mention";
			if (mode !== "all" && mode !== "mention") {
				return {
					content: [{ type: "text", text: `Invalid mode "${params.respondTo}". Use "all" or "mention".` }],
				};
			}
			const config = setRepoConfig(params.repo, { respondTo: mode });
			return {
				content: [{ type: "text", text: `✅ ${params.repo}: respondTo = ${config.respondTo}` }],
				details: { repo: params.repo, config },
			};
		},
	});

	pi.registerTool({
		name: "gitea_tracked_repos",
		label: "Gitea: List Tracked Repos",
		description: "Show all tracked repos, their type (webhook/collab), and response mode.",
		parameters: Type.Object({}),
		async execute() {
			const { webhook, collab, configs } = getTrackedRepos();
			const lines: string[] = [];

			for (const [name] of webhook) {
				const mode = configs.get(name)?.respondTo ?? "all";
				lines.push(`✅ ${name} — webhook (respondTo: ${mode})`);
			}
			for (const name of collab) {
				const mode = configs.get(name)?.respondTo ?? "mention";
				lines.push(`📋 ${name} — collab/notification (respondTo: ${mode})`);
			}

			return {
				content: [{ type: "text", text: lines.length > 0 ? lines.join("\n") : "No repos tracked." }],
				details: { webhook: [...webhook.keys()], collab: [...collab], configs: Object.fromEntries(configs) },
			};
		},
	});

	// ── Lifecycle ────────────────────────────────────────────────────────────

	pi.on("session_start", async (_event, ctx) => {
		console.log("[pi-gitea] Session started");

		// Auto-detect runtime: pi-bot (persistent session) vs openclaw (hooks endpoint)
		if (ctx.sendUserMessage) {
			// pi-bot: inject directly into the running session
			console.log("[pi-gitea] Delivery: sendUserMessage (pi-bot mode)");
			setSendMessage((msg: string) => {
				ctx.sendUserMessage(msg, { deliverAs: "followUp" });
				return Promise.resolve();
			});
		} else {
			// openclaw: POST to the hooks endpoint
			const hooksUrl = process.env.OPENCLAW_HOOKS_URL ?? "http://localhost:3001";
			const hooksPath = process.env.OPENCLAW_HOOKS_PATH ?? "/hooks/agent";
			const hooksToken = process.env.OPENCLAW_HOOKS_TOKEN ?? "";
			console.log(`[pi-gitea] Delivery: openclaw hooks (${hooksUrl}${hooksPath})`);
			setSendMessage(async (msg: string) => {
				const res = await fetch(`${hooksUrl}${hooksPath}`, {
					method: "POST",
					headers: {
						"Content-Type": "application/json",
						...(hooksToken ? { Authorization: `Bearer ${hooksToken}` } : {}),
					},
					body: JSON.stringify({ message: msg }),
				});
				if (!res.ok) {
					const body = await res.text().catch(() => "");
					throw new Error(`Hooks POST failed: ${res.status} ${body}`);
				}
			});
		}

		try {
			await startWebhookServer(pi);
			await startPolling(pi);
		} catch (err) {
			console.error("[pi-gitea] Failed to start:", err);
		}
	});

	pi.on("session_shutdown", async () => {
		console.log("[pi-gitea] Session shutting down");
		await stopWebhookServer();
		stopPolling();
	});
}