import { post } from "./api.js";
import { ago, errorText, h, replace, showAlert, showConfirm } from "./dom.js";
import { markdown } from "./markdown.js";
import { currentSession, findTask, onEach, state } from "./state.js";
const models = ["claude-opus-5-5", "claude-sonnet-5-5", "claude-haiku-5-5", "claude-fable-5-1"];
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,
            lastMessage: undefined,
            turnStart: 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 }, ...[1, 2, 3, 4, 5, 6].map((n) => h("span", { class: `dot${n}` })));
    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);
        if (task.status !== "active") {
            replace(head, h("div", { class: "head-actions" }, task.status));
            return;
        }
        const target = state.projects.find((p) => p.id === task.project_id)?.default_branch ?? "the default branch";
        const busy = sess?.state === "running" || sess?.state === "queued";
        const merge = h("button", { disabled: busy, title: `The agent merges ${target} in, then byre squashes into one commit on ${target}; nothing is pushed` }, "Merge");
        merge.onclick = () => confirmThen(`Merge "${task.title}" into ${target}?`, "Merge", false, async () => {
            await post("/api/tasks/{taskId}/merge", { path: { taskId: task.id } });
        });
        const mergeIn = h("button", { disabled: busy, title: `Ask the agent to merge ${target} into this branch and resolve any conflicts` }, `Merge ${target} in`);
        mergeIn.onclick = async () => {
            mergeIn.disabled = true;
            try {
                await post("/api/tasks/{taskId}/merge-in", { path: { taskId: task.id } });
            }
            catch (err) {
                void showAlert(errorText(err));
                mergeIn.disabled = false;
            }
        };
        const discard = h("button", { class: "danger", disabled: busy, title: "Delete the worktree and branch without merging" }, "Discard");
        discard.onclick = () => confirmThen(`Discard "${task.title}"?`, "Discard", true, async () => {
            await post("/api/tasks/{taskId}/discard", { path: { taskId: task.id } });
            location.hash = "#/";
        });
        replace(head, h("div", { class: "head-actions session-actions" }, sess && contextMeter(context.get(sess.id)), sess && compactButton(sess.id, sess.state), mergeIn), h("div", { class: "head-actions" }, merge, discard));
    };
    let composerModel = "";
    let focusStart = false;
    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") {
            const form = startForm(task.id);
            replace(composer, form);
            if (focusStart && !sess) {
                form.querySelector("textarea")?.focus();
            }
            focusStart = false;
            return;
        }
        focusStart = false;
        composerModel = sess.model || context.get(sess.id)?.model || "";
        replace(composer, messageForm(task.id, sess.id, sess.state, composerModel));
    };
    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);
            run.group = { el: group, summary, body };
        }
        run.group.body.append(el);
        replace(run.group.summary, runSummary(run.calls));
    };
    let stream;
    const dropStream = () => {
        if (!stream) {
            return;
        }
        clearTimeout(stream.timer);
        stream.el.remove();
        stream = undefined;
    };
    const appendDelta = (ev) => {
        if (!stream) {
            stream = { el: h("div", { class: "msg agent" }), text: "", timer: 0 };
            ctx.run = undefined;
            put(stream.el);
        }
        stream.text += String(ev.payload["text"] ?? "");
        if (stream.timer) {
            return;
        }
        stream.timer = setTimeout(() => {
            if (!stream) {
                return;
            }
            stream.timer = 0;
            const pinned = transcript.scrollHeight - transcript.scrollTop - transcript.clientHeight < 80;
            replace(stream.el, markdown(stream.text, "text md"));
            if (pinned) {
                transcript.scrollTop = transcript.scrollHeight;
            }
        }, 100);
    };
    const foldTurn = (start, end) => {
        const summary = h("summary");
        summary.append(...end.childNodes);
        const body = h("div", { class: "folded-turn" });
        start.before(h("details", { class: "note" }, summary, body));
        let node = start;
        while (node && node !== spinner) {
            const next = node.nextSibling;
            body.append(node);
            node = next;
        }
    };
    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 === "agent.message" || ev.kind === "turn.ended" || ev.kind === "user.message") {
                dropStream();
            }
            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;
            if (ev.kind === "turn.ended" && p["handoff"] === true && ctx.turnStart?.parentNode === transcript) {
                foldTurn(ctx.turnStart, el);
                ctx.turnStart = undefined;
                continue;
            }
            put(el);
            if (ev.kind === "user.message") {
                ctx.turnStart = el;
            }
        }
        if (contextChanged) {
            renderHead();
            const sess = state.selectedTaskId ? currentSession(state.selectedTaskId) : undefined;
            if (sess && !sess.model && (context.get(sess.id)?.model ?? "") !== composerModel) {
                renderComposer();
            }
        }
        if (pinned) {
            transcript.scrollTop = transcript.scrollHeight;
        }
    };
    const renderAll = () => {
        observer.disconnect();
        visibleReports.clear();
        dropStream();
        ctx = newCtx();
        context = new Map();
        focusStart = true;
        renderHead();
        if (!state.selectedTaskId) {
            renderComposer();
            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);
        renderComposer();
    };
    const offs = [
        onEach(["selection"], renderAll),
        onEach(["tasks"], () => {
            renderHead();
            renderComposer();
        }),
        onEach(["sessions"], (taskId) => {
            if (taskId === state.selectedTaskId) {
                renderHead();
                renderComposer();
            }
        }),
        onEach(["transcript"], (fresh) => appendEvents(fresh)),
        onEach(["stream"], (ev) => appendDelta(ev)),
        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();
        dropStream();
    };
}
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);
}
const imageDrafts = new Map();
const imageTypes = ["image/png", "image/jpeg", "image/gif", "image/webp"];
const maxImageBytes = 5 << 20;
function imageTray(form, input, key) {
    const el = h("div", { class: "compose-images" });
    const render = () => {
        const imgs = imageDrafts.get(key) ?? [];
        el.hidden = imgs.length === 0;
        replace(el, ...imgs.map((img) => {
            const remove = h("button", { type: "button", class: "remove", title: "Remove image" }, "×");
            remove.onclick = () => {
                URL.revokeObjectURL(img.url);
                const rest = (imageDrafts.get(key) ?? []).filter((i) => i !== img);
                if (rest.length > 0) {
                    imageDrafts.set(key, rest);
                }
                else {
                    imageDrafts.delete(key);
                }
                render();
            };
            return h("div", { class: "thumb" }, h("img", { src: img.url, alt: "attached image" }), remove);
        }));
    };
    const add = (files) => {
        const added = [];
        for (const f of files) {
            if (!imageTypes.includes(f.type)) {
                void showAlert(`${f.name || "That file"} isn't a PNG, JPEG, GIF or WebP image.`);
                continue;
            }
            if (f.size > maxImageBytes) {
                void showAlert(`${f.name || "That image"} is over ${maxImageBytes >> 20} MiB.`);
                continue;
            }
            added.push({ file: f, url: URL.createObjectURL(f) });
        }
        if (added.length === 0) {
            return false;
        }
        imageDrafts.set(key, [...(imageDrafts.get(key) ?? []), ...added]);
        render();
        return true;
    };
    input.addEventListener("paste", (e) => {
        const files = [...(e.clipboardData?.files ?? [])].filter((f) => f.type.startsWith("image/"));
        if (files.length > 0) {
            e.preventDefault();
            add(files);
        }
    });
    form.addEventListener("dragover", (e) => {
        if (e.dataTransfer?.types.includes("Files")) {
            e.preventDefault();
            form.classList.add("dropping");
        }
    });
    form.addEventListener("dragleave", (e) => {
        if (!form.contains(e.relatedTarget)) {
            form.classList.remove("dropping");
        }
    });
    form.addEventListener("drop", (e) => {
        form.classList.remove("dropping");
        const files = [...(e.dataTransfer?.files ?? [])];
        if (files.length > 0) {
            e.preventDefault();
            add(files);
        }
    });
    render();
    return {
        el,
        take: () => {
            const imgs = imageDrafts.get(key) ?? [];
            imageDrafts.delete(key);
            render();
            return imgs;
        },
        restore: (imgs) => {
            if (imgs.length > 0) {
                imageDrafts.set(key, [...imgs, ...(imageDrafts.get(key) ?? [])]);
            }
            render();
        },
    };
}
async function uploadImages(imgs) {
    if (imgs.length === 0) {
        return undefined;
    }
    const ids = [];
    for (const img of imgs) {
        const blob = await post("/api/blobs", { body: img.file });
        ids.push(blob.id);
    }
    return ids;
}
function releaseImages(imgs) {
    for (const img of imgs) {
        URL.revokeObjectURL(img.url);
    }
}
function startForm(taskId) {
    const prompt = h("textarea", { placeholder: "What should the agent do? Paste or drop images to attach them.", rows: 4, required: true });
    const clearDraft = keepDraft(prompt, `start:${taskId}`);
    const model = modelSelect(`start:${taskId}`, models[0]);
    const form = h("form", { class: "compose" });
    const tray = imageTray(form, prompt, `start:${taskId}`);
    form.append(tray.el, prompt, h("div", { class: "compose-actions" }, model, h("button", { type: "submit" }, "Start agent")));
    form.onsubmit = async (e) => {
        e.preventDefault();
        const value = prompt.value;
        const imgs = tray.take();
        prompt.value = "";
        clearDraft();
        try {
            const images = await uploadImages(imgs);
            await post("/api/tasks/{taskId}/sessions", { path: { taskId }, body: { prompt: value, model: model.value, images } });
            releaseImages(imgs);
        }
        catch (err) {
            composerDrafts.set(`start:${taskId}`, value);
            prompt.value = value;
            tray.restore(imgs);
            void showAlert(errorText(err));
        }
    };
    submitOnEnter(prompt, form);
    return form;
}
const modelChoices = new Map();
function modelSelect(key, current) {
    const options = current && !models.includes(current) ? [current, ...models] : models;
    const select = h("select", { title: "Model for the next turn" }, ...options.map((m) => h("option", { value: m }, m)));
    select.value = modelChoices.get(key) ?? (current || models[0]);
    select.onchange = () => {
        modelChoices.set(key, select.value);
    };
    return select;
}
function messageForm(taskId, sessionId, sessionState, currentModel) {
    const text = h("textarea", {
        placeholder: sessionState === "idle" ? "Message the agent. Paste or drop images to attach them." : "Wait for the turn to end, or interrupt it",
        rows: 3,
    });
    const clearDraft = keepDraft(text, `message:${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) {
            void showAlert(errorText(err));
        }
    };
    const model = modelSelect(`message:${sessionId}`, currentModel);
    const form = h("form", { class: "compose" });
    const tray = imageTray(form, text, `message:${taskId}`);
    form.append(tray.el, text, h("div", { class: "compose-actions" }, model, interrupt, send));
    form.onsubmit = async (e) => {
        e.preventDefault();
        const value = text.value;
        if (!value.trim() && !imageDrafts.has(`message:${taskId}`)) {
            return;
        }
        const imgs = tray.take();
        text.value = "";
        clearDraft();
        try {
            const images = await uploadImages(imgs);
            await post("/api/sessions/{sessionId}/messages", {
                path: { sessionId },
                body: { text: value, images, model: model.value !== currentModel ? model.value : undefined },
            });
            modelChoices.delete(`message:${sessionId}`);
            releaseImages(imgs);
        }
        catch (err) {
            composerDrafts.set(`message:${taskId}`, value);
            text.value = value;
            tray.restore(imgs);
            void showAlert(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 compactButton(sessionId, sessionState) {
    const b = h("button", { type: "button", disabled: sessionState !== "idle", title: "Ask the agent for a handoff, then continue in a new session with a fresh context" }, "Compact");
    b.onclick = async () => {
        b.disabled = true;
        try {
            await post("/api/sessions/{sessionId}/compact", { path: { sessionId } });
        }
        catch (err) {
            void showAlert(errorText(err));
            b.disabled = false;
        }
    };
    return b;
}
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":
            ctx.lastMessage = undefined;
            if (ev.actor === "byre") {
                const text = String(p["text"]);
                const [first, ...rest] = text.split("\n");
                if (rest.join("").trim() === "") {
                    return h("div", { class: "note" }, text, " ", when);
                }
                return h("details", { class: "note" }, h("summary", {}, first, " ", when), markdown(rest.join("\n"), "text md"));
            }
            return h("div", { class: "msg user" }, h("div", { class: "who" }, ev.actor, " ", when), messageImages(p["images"]), String(p["text"] ?? "").trim() ? markdown(String(p["text"]), "text md") : null);
        case "agent.message":
            ctx.lastMessage = h("div", { class: "msg agent" }, markdown(String(p["text"]), "text md"));
            return ctx.lastMessage;
        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 = "tool-result";
            replace(target, body);
            return null;
        }
        case "turn.ended":
            if (typeof p["inbox_item_id"] === "string" && p["inbox_item_id"] && ctx.lastMessage) {
                ctx.watchReport(ctx.lastMessage, p["inbox_item_id"]);
            }
            if (p["handoff"] === true) {
                return h("div", { class: "note" }, "handoff written; continuing in a new session with a fresh context ", when);
            }
            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.model":
            return h("div", { class: "note" }, `${ev.actor} switched the model to ${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.merge_title":
            return h("div", { class: "note" }, `${ev.actor} set the merge commit title to "${String(p["merge_title"])}" `, when);
        case "task.merged":
            return h("div", { class: "note" }, `${ev.actor} merged the task${p["commit"] ? ` as ${String(p["commit"]).slice(0, 7)}` : ""}${p["pushed"] ? ` and pushed it to ${String(p["pushed"])}` : ""} `, when);
        case "task.discarded":
            return h("div", { class: "note" }, `${ev.actor} discarded the task `, when);
    }
    return null;
}
function messageImages(ids) {
    if (!Array.isArray(ids) || ids.length === 0) {
        return null;
    }
    return h("div", { class: "msg-images" }, ...ids.map((id) => {
        const src = `/api/blobs/${encodeURIComponent(String(id))}`;
        return h("a", { href: src, target: "_blank", rel: "noopener" }, h("img", { src, alt: "attached image", loading: "lazy" }));
    }));
}
async function confirmThen(question, action, danger, act) {
    if (!(await showConfirm(question, action, danger))) {
        return;
    }
    try {
        await act();
    }
    catch (err) {
        await showAlert(errorText(err));
    }
}
function toolBrief(input, root) {
    if (typeof input !== "object" || input === null) {
        return "";
    }
    const i = input;
    const brief = i["command"] ?? i["file_path"] ?? i["pattern"] ?? i["url"] ?? i["question"] ?? i["description"] ?? "";
    const text = relative(String(brief), root);
    return text.length > 120 ? `${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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