import { post } from "./api.js";
import { ago, errorText, h, replace } from "./dom.js";
import { inlineMarkdown, markdown } from "./markdown.js";
import { currentSession, findTask, onEach, state } from "./state.js";
const models = ["", "opus", "sonnet", "haiku"];
export function mountTranscript(root) {
    const head = h("header", { class: "task-header" });
    const transcript = h("div", { class: "transcript" });
    const composer = h("div", { class: "composer" });
    const visibleReports = new Map();
    const acked = new Set();
    const ackVisible = () => {
        if (document.visibilityState !== "visible") {
            return;
        }
        const ids = [...new Set(visibleReports.values())].filter((id) => !acked.has(id) && state.inbox.some((i) => i.id === id));
        if (ids.length === 0) {
            return;
        }
        for (const id of ids) {
            acked.add(id);
        }
        post("/api/inbox/responses", { body: { responses: ids.map((id) => ({ item_id: id, type: "dismiss" })) } }).catch((err) => {
            for (const id of ids) {
                acked.delete(id);
            }
            console.error("acknowledge reports", err);
        });
    };
    const observer = new IntersectionObserver((entries) => {
        for (const e of entries) {
            const id = e.target.dataset["inboxItem"];
            if (!id) {
                continue;
            }
            if (e.isIntersecting) {
                visibleReports.set(e.target, id);
            }
            else {
                visibleReports.delete(e.target);
            }
        }
        ackVisible();
    }, { root: transcript, threshold: 0.5 });
    const newCtx = () => {
        const task = state.selectedTaskId ? findTask(state.selectedTaskId) : undefined;
        return {
            tools: new Map(),
            run: undefined,
            root: task?.worktree_path ?? "",
            watchReport: (el, itemId) => {
                el.dataset["inboxItem"] = itemId;
                observer.observe(el);
            },
        };
    };
    let ctx = newCtx();
    let context = new Map();
    const spinner = h("div", { class: "spinner", hidden: true });
    const setRunning = (running) => {
        transcript.classList.toggle("running", running);
        if (running === !spinner.hidden) {
            return;
        }
        const pinned = transcript.scrollHeight - transcript.scrollTop - transcript.clientHeight < 80;
        spinner.hidden = !running;
        if (pinned) {
            transcript.scrollTop = transcript.scrollHeight;
        }
    };
    const put = (el) => {
        if (spinner.parentNode === transcript) {
            transcript.insertBefore(el, spinner);
        }
        else {
            transcript.append(el);
        }
    };
    const renderHead = () => {
        const task = state.selectedTaskId ? findTask(state.selectedTaskId) : undefined;
        setRunning(task !== undefined && currentSession(task.id)?.state === "running");
        if (!task) {
            replace(head);
            return;
        }
        const sess = currentSession(task.id);
        const complete = h("button", { class: "danger", title: "Remove the worktree and branch; history stays" }, "Complete task");
        complete.onclick = async () => {
            if (!confirm(`Complete "${task.title}"? Its worktree and branch are removed; its history stays.`)) {
                return;
            }
            try {
                await post("/api/tasks/{taskId}/complete", { path: { taskId: task.id } });
                location.hash = "#/";
            }
            catch (err) {
                alert(errorText(err));
            }
        };
        replace(head, h("div", { class: "meta" }, h("code", {}, task.branch)), h("div", { class: "head-actions" }, sess && contextMeter(context.get(sess.id)), complete));
    };
    const renderComposer = () => {
        const task = state.selectedTaskId ? findTask(state.selectedTaskId) : undefined;
        if (!task) {
            replace(composer);
            return;
        }
        const sess = currentSession(task.id);
        if (!sess || sess.state === "completed") {
            replace(composer, startForm(task.id));
            return;
        }
        replace(composer, messageForm(task.id, sess.id, sess.state));
    };
    const addToRun = (el, call) => {
        const run = ctx.run;
        if (!run) {
            ctx.run = { first: el, group: undefined, calls: call ? [call] : [] };
            put(el);
            return;
        }
        if (call) {
            run.calls.push(call);
        }
        if (!run.group) {
            const summary = h("summary");
            const body = h("div", { class: "tool-group-body" });
            const group = h("details", { class: "tool-group" }, summary, body);
            run.first.replaceWith(group);
            body.append(run.first);
            if (run.first.classList.contains("errored")) {
                group.classList.add("errored");
            }
            run.group = { el: group, summary, body };
        }
        run.group.body.append(el);
        replace(run.group.summary, runSummary(run.calls));
    };
    const appendEvents = (events) => {
        const pinned = transcript.scrollHeight - transcript.scrollTop - transcript.clientHeight < 80;
        let contextChanged = false;
        for (const ev of events) {
            const p = ev.payload;
            if (ev.kind === "session.context" && ev.agent_session_id) {
                const prev = context.get(ev.agent_session_id);
                const window = Number(p["window"]) || prev?.window || 0;
                context.set(ev.agent_session_id, { used: Number(p["used"]), window, model: String(p["model"] ?? "") });
                contextChanged = true;
                continue;
            }
            if (ev.kind === "agent.tool_call") {
                addToRun(renderToolCall(p, ctx), { name: String(p["name"]), target: toolTarget(p["input"], ctx.root) });
                continue;
            }
            const el = renderEvent(ev, ctx);
            if (!el) {
                continue;
            }
            if (ev.kind === "agent.thinking") {
                addToRun(el, undefined);
                continue;
            }
            ctx.run = undefined;
            put(el);
        }
        if (contextChanged) {
            renderHead();
        }
        if (pinned) {
            transcript.scrollTop = transcript.scrollHeight;
        }
    };
    const renderAll = () => {
        observer.disconnect();
        visibleReports.clear();
        ctx = newCtx();
        context = new Map();
        renderHead();
        renderComposer();
        if (!state.selectedTaskId) {
            replace(transcript, h("div", { class: "empty" }, "No task selected. Pick one with ⌘K or from the Tasks tab."));
            return;
        }
        replace(transcript, spinner);
        appendEvents(state.transcript);
    };
    const offs = [
        onEach(["selection"], renderAll),
        onEach(["tasks"], () => {
            renderHead();
            renderComposer();
        }),
        onEach(["sessions"], (taskId) => {
            if (taskId === state.selectedTaskId) {
                renderHead();
                renderComposer();
            }
        }),
        onEach(["transcript"], (fresh) => appendEvents(fresh)),
        onEach(["inbox"], ackVisible),
    ];
    document.addEventListener("visibilitychange", ackVisible);
    replace(root, h("div", { class: "transcript-view" }, head, transcript, composer));
    renderAll();
    return () => {
        for (const off of offs) {
            off();
        }
        document.removeEventListener("visibilitychange", ackVisible);
        observer.disconnect();
    };
}
const composerDrafts = new Map();
function keepDraft(input, key) {
    input.value = composerDrafts.get(key) ?? "";
    input.addEventListener("input", () => {
        if (input.value) {
            composerDrafts.set(key, input.value);
        }
        else {
            composerDrafts.delete(key);
        }
    });
    return () => composerDrafts.delete(key);
}
function startForm(taskId) {
    const prompt = h("textarea", { placeholder: "What should the agent do?", rows: 4, required: true });
    const clearDraft = keepDraft(prompt, `start:${taskId}`);
    const model = h("select", {}, ...models.map((m) => h("option", { value: m }, m || "default model")));
    const form = h("form", { class: "compose" }, prompt, h("div", { class: "compose-actions" }, model, h("button", { type: "submit" }, "Start agent")));
    form.onsubmit = async (e) => {
        e.preventDefault();
        try {
            await post("/api/tasks/{taskId}/sessions", { path: { taskId }, body: { prompt: prompt.value, model: model.value || undefined } });
            clearDraft();
        }
        catch (err) {
            alert(errorText(err));
        }
    };
    submitOnEnter(prompt, form);
    return form;
}
function messageForm(taskId, sessionId, sessionState) {
    const text = h("textarea", { placeholder: sessionState === "idle" ? "Message the agent" : "Wait for the turn to end, or interrupt it", rows: 3 });
    const clearDraft = keepDraft(text, `message:${taskId}`);
    const send = h("button", { type: "submit", disabled: sessionState !== "idle" }, "Send");
    const interrupt = h("button", { type: "button", class: "danger", disabled: sessionState !== "running" && sessionState !== "queued" }, sessionState === "queued" ? "Cancel queued turn" : "Interrupt");
    interrupt.onclick = async () => {
        try {
            await post("/api/sessions/{sessionId}/interrupt", { path: { sessionId } });
        }
        catch (err) {
            alert(errorText(err));
        }
    };
    const form = h("form", { class: "compose" }, text, h("div", { class: "compose-actions" }, interrupt, send));
    form.onsubmit = async (e) => {
        e.preventDefault();
        if (!text.value.trim()) {
            return;
        }
        try {
            await post("/api/sessions/{sessionId}/messages", { path: { sessionId }, body: { text: text.value } });
            text.value = "";
            clearDraft();
        }
        catch (err) {
            alert(errorText(err));
        }
    };
    submitOnEnter(text, form);
    return form;
}
function submitOnEnter(input, form) {
    input.onkeydown = (e) => {
        if (e.key === "Enter" && !e.shiftKey && !e.isComposing) {
            e.preventDefault();
            form.requestSubmit();
        }
    };
}
function contextMeter(c) {
    if (!c || c.window <= 0) {
        return null;
    }
    const pct = Math.min(100, (c.used / c.window) * 100);
    const level = pct >= 90 ? "danger" : pct >= 70 ? "warn" : "ok";
    const title = `context: ${c.used.toLocaleString()} of ${c.window.toLocaleString()} tokens${c.model ? ` (${c.model})` : ""}`;
    return h("span", { class: `context-meter ${level}`, title }, `${Math.round(pct)}%`);
}
function renderToolCall(p, ctx) {
    const result = h("div", { class: "tool-result pending" }, "running…");
    ctx.tools.set(String(p["id"]), result);
    return h("details", { class: "tool" }, h("summary", {}, h("span", { class: "tool-name" }, String(p["name"])), " ", h("span", { class: "tool-brief" }, toolBrief(p["input"], ctx.root))), h("pre", { class: "tool-input" }, JSON.stringify(p["input"], null, 2)), result);
}
function runSummary(calls) {
    const counts = new Map();
    for (const c of calls) {
        const key = `${c.name}\0${c.target}`;
        const entry = counts.get(key);
        if (entry) {
            entry.n++;
        }
        else {
            counts.set(key, { call: c, n: 1 });
        }
    }
    if (counts.size === 0) {
        return h("span", { class: "tool-brief" }, "thinking");
    }
    const parts = [];
    for (const { call, n } of counts.values()) {
        if (parts.length > 0) {
            parts.push(", ");
        }
        parts.push(h("span", {}, h("span", { class: "tool-name" }, call.name), call.target ? h("span", { class: "tool-brief" }, " ", call.target) : null, n > 1 ? h("span", { class: "tool-count" }, ` ×${n}`) : null));
    }
    return h("span", {}, ...parts);
}
function renderEvent(ev, ctx) {
    const p = ev.payload;
    const when = h("time", { dateTime: ev.created_at, title: ev.created_at }, ago(ev.created_at));
    switch (ev.kind) {
        case "user.message":
            if (ev.actor === "byre") {
                return h("div", { class: "note" }, String(p["text"]), " ", when);
            }
            return h("div", { class: "msg user" }, h("div", { class: "who" }, ev.actor, " ", when), markdown(String(p["text"]), "text md"));
        case "agent.message":
            return h("div", { class: "msg agent" }, markdown(String(p["text"]), "text md"));
        case "agent.thinking":
            return h("details", { class: "thinking" }, h("summary", {}, "thinking"), markdown(String(p["text"]), "text md"));
        case "agent.tool_result": {
            const target = ctx.tools.get(String(p["tool_use_id"]));
            const body = h("pre", {}, resultText(p["content"]));
            if (!target) {
                return h("div", { class: "tool-result orphan" }, body);
            }
            target.className = p["is_error"] ? "tool-result error" : "tool-result";
            replace(target, body);
            if (p["is_error"]) {
                target.closest("details.tool")?.classList.add("errored");
                target.closest("details.tool-group")?.classList.add("errored");
            }
            return null;
        }
        case "agent.report": {
            const card = reportCard(p);
            if (typeof p["inbox_item_id"] === "string" && p["inbox_item_id"]) {
                ctx.watchReport(card, p["inbox_item_id"]);
            }
            return card;
        }
        case "turn.ended":
            return h("div", { class: `turn-end ${p["is_error"] ? "error" : ""}` }, p["is_error"] ? `turn ended: ${String(p["subtype"]).replaceAll("_", " ")}` : "");
        case "session.created":
            return h("div", { class: "note" }, `${ev.actor} started a ${p["vendor"]} session`, p["model"] ? ` (${p["model"]})` : "", " ", when);
        case "session.state":
            return p["error"] ? h("div", { class: "note error" }, `session ${p["state"]}: ${p["error"]}`) : null;
        case "inbox.created": {
            const kind = p["kind"];
            if (kind === "question") {
                const q = p["payload"];
                return h("div", { class: "note ask" }, `asked${p["blocking"] ? " (blocking)" : ""}: `, String(q["question"]));
            }
            if (kind === "session_error" || kind === "rate_limited") {
                const q = p["payload"];
                return h("div", { class: "note error" }, String(q["error"]));
            }
            return null;
        }
        case "task.completed":
            return h("div", { class: "note" }, `${ev.actor} completed the task `, when);
    }
    return null;
}
export function reportCard(p) {
    const sections = [
        ["done", "Done"],
        ["deviations", "Deviations from plan"],
        ["risks", "Risks"],
        ["next_steps", "Next steps"],
    ];
    return h("div", { class: "report" }, ...sections.map(([key, label]) => {
        const items = p[key] ?? [];
        if (items.length === 0) {
            return null;
        }
        return h("div", { class: `report-section ${key}` }, h("h4", {}, label), h("ul", {}, ...items.map((i) => h("li", {}, inlineMarkdown(i)))));
    }));
}
function toolBrief(input, root) {
    if (typeof input !== "object" || input === null) {
        return "";
    }
    const i = input;
    const brief = i["command"] ?? i["file_path"] ?? i["pattern"] ?? i["url"] ?? i["question"] ?? i["description"] ?? "";
    const text = relative(String(brief), root);
    return text.length > 120 ? `${text.slice(0, 120)}…` : text;
}
function toolTarget(input, root) {
    if (typeof input !== "object" || input === null) {
        return "";
    }
    const path = input["file_path"];
    return typeof path === "string" ? relative(path, root) : "";
}
function relative(path, root) {
    return root && path.startsWith(`${root}/`) ? path.slice(root.length + 1) : path;
}
function resultText(content) {
    if (typeof content === "string") {
        return content;
    }
    if (Array.isArray(content)) {
        return content.map((c) => (typeof c === "object" && c !== null && "text" in c ? String(c.text) : JSON.stringify(c))).join("\n");
    }
    return JSON.stringify(content, null, 2);
}
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