import { get, post, put } from "./api.js";
import { ago, errorText, h, replace, showAlert } from "./dom.js";
import { markdown } from "./markdown.js";
import { onEach, pickReview, state } from "./state.js";
const severities = ["critical", "high", "medium", "low", "info"];
export function isReviewEvent(ev) {
    return ev.kind.startsWith("review.");
}
function findingsOf(r) {
    const res = (r.result ?? {});
    return Array.isArray(res["findings"]) ? res["findings"] : [];
}
export function findingCount(r) {
    return r.state === "done" ? findingsOf(r).filter((_, i) => !r.finding_states[String(i)]).length : 0;
}
export function unignoredFindings(r) {
    return r.state === "done" ? findingsOf(r).filter((_, i) => r.finding_states[String(i)] !== "ignored") : [];
}
export function latestReview(events) {
    const all = events.filter(isReviewEvent).map((ev) => ev.payload);
    return all.reduce((best, r) => (!best || r.snapshot_n >= best.snapshot_n ? r : best), undefined);
}
export function reviewCounts(r) {
    return severityCounts(findingsOf(r));
}
export function severityCounts(findings) {
    const parts = severities.map((s) => [s, findings.filter((f) => f["severity"] === s).length]).filter(([, n]) => n > 0);
    return parts.length > 0 ? parts.map(([s, n]) => `${n} ${s}`).join(", ") : "no findings";
}
function stateText(r) {
    switch (r.state) {
        case "running":
            return `reviewing on ${r.vendor} (${r.model})…`;
        case "done":
            return reviewCounts(r);
        case "failed":
            return "failed";
        case "skipped":
            return "skipped: no changes";
    }
}
export function reviewCard(r, taskId) {
    return h("article", { class: `review ${r.state}` }, h("header", {}, h("span", { class: "review-snapshot" }, `snapshot #${r.snapshot_n}`), h("span", { class: `review-state ${r.state}` }, stateText(r)), h("time", { dateTime: r.created_at, title: r.created_at }, ago(r.created_at)), r.state === "running" ? stopButton(r) : null), r.state === "failed" ? h("p", { class: "error-text" }, r.error) : null, r.state === "done" ? reviewResult(r, taskId) : null);
}
function stopButton(r) {
    const b = h("button", { type: "button", class: "danger review-stop", title: "End the reviewer and record this review as failed" }, "Stop");
    b.onclick = async () => {
        b.disabled = true;
        try {
            await post("/api/reviews/{reviewId}/stop", { path: { reviewId: r.id } });
        }
        catch (err) {
            b.disabled = false;
            void showAlert(errorText(err));
        }
    };
    return b;
}
function reviewResult(r, taskId) {
    const res = (r.result ?? {});
    const findings = findingsOf(r);
    const md = { taskId };
    return h("div", { class: "review-result" }, markdown(String(res["summary"] ?? ""), "md review-summary", md), reviewImages(res["images"]), findings.length > 0
        ? h("ol", { class: "findings" }, ...findings.map((f, i) => {
            const severity = String(f["severity"] ?? "");
            const path = typeof f["path"] === "string" ? f["path"] : "";
            const line = typeof f["line"] === "number" && f["line"] > 0 ? f["line"] : 0;
            const end = typeof f["end_line"] === "number" && f["end_line"] > line ? f["end_line"] : line;
            const where = path ? `${path}${line ? `:${line}${end > line ? `–${end}` : ""}` : ""}` : "";
            return h("li", { class: `finding ${severity}` }, h("div", { class: "finding-head" }, h("span", { class: `severity ${severity}` }, severity), typeof f["category"] === "string" && f["category"] ? h("span", { class: "finding-category" }, f["category"]) : null, h("span", { class: "finding-title" }, String(f["title"] ?? "")), where ? h("code", { class: "finding-where" }, where) : null, taskId ? findingActions(taskId, r, i, f, where) : null), taskId && path && line ? findingDiff(taskId, r.snapshot_n, path, line, end) : null, markdown(String(f["detail"] ?? ""), "md finding-detail", md), reviewImages(f["images"]));
        }))
        : null);
}
function reviewImages(v) {
    if (!Array.isArray(v) || v.length === 0) {
        return null;
    }
    return h("div", { class: "review-images" }, ...v.map((img) => {
        const src = `/api/blobs/${encodeURIComponent(String(img["blob"] ?? ""))}`;
        const caption = typeof img["caption"] === "string" ? img["caption"] : "";
        return h("figure", {}, h("a", { href: src, target: "_blank", rel: "noopener" }, h("img", { src, alt: caption || "screenshot", loading: "lazy" })), caption ? h("figcaption", {}, caption) : null);
    }));
}
const snapChanges = new Map();
const snapPatches = new Map();
function snapshotPatch(taskId, n, path) {
    const key = `${taskId}/${n}/${path}`;
    const cached = snapPatches.get(key);
    if (cached) {
        return cached;
    }
    const fetched = (async () => {
        const ck = `${taskId}/${n}`;
        let pending = snapChanges.get(ck);
        if (!pending) {
            pending = get("/api/tasks/{taskId}/changes", { path: { taskId }, query: { snapshot: n } });
            snapChanges.set(ck, pending);
        }
        const changes = await pending.catch((err) => {
            snapChanges.delete(ck);
            throw err;
        });
        const f = changes.files.find((c) => c.path === path);
        if (!f || f.binary) {
            return undefined;
        }
        const d = await get("/api/tasks/{taskId}/diff", { path: { taskId }, query: { base: changes.base, tree: changes.tree, path: f.path, old_path: f.old_path } });
        return d.patch;
    })();
    snapPatches.set(key, fetched);
    fetched.catch(() => snapPatches.delete(key));
    return fetched;
}
function linesAround(patch, line, end) {
    const lines = [];
    let n = 0;
    let inHunk = false;
    for (const l of patch.split("\n")) {
        const m = /^@@ -\d+(?:,\d+)? \+(\d+)(?:,\d+)? @@/.exec(l);
        if (m) {
            n = Number(m[1]);
            inHunk = true;
            continue;
        }
        if (!inHunk) {
            continue;
        }
        if (l.startsWith("+")) {
            lines.push({ kind: "add", text: l, at: n++ });
        }
        else if (l.startsWith("-")) {
            lines.push({ kind: "del", text: l, at: n });
        }
        else if (l.startsWith(" ")) {
            lines.push({ kind: "ctx", text: l, at: n++ });
        }
    }
    return lines.filter((d) => d.at >= line - 3 && d.at <= end + 3);
}
function findingDiff(taskId, n, path, line, end) {
    const box = h("div", { class: "finding-diff" });
    snapshotPatch(taskId, n, path).then((patch) => {
        const lines = patch === undefined ? [] : linesAround(patch, line, end);
        if (lines.length === 0) {
            box.remove();
            return;
        }
        const rows = [];
        lines.forEach((d, i) => {
            const prev = lines[i - 1];
            if (prev && d.kind !== "del" && prev.kind !== "del" && d.at > prev.at + 1) {
                rows.push(h("span", { class: "line hunk" }, "⋯"));
            }
            const mark = d.kind !== "del" && d.at >= line && d.at <= end;
            rows.push(h("span", { class: `line ${d.kind}${mark ? " mark" : ""}` }, h("span", { class: "lineno" }, d.kind === "del" ? "" : String(d.at)), d.text || " "));
        });
        replace(box, h("pre", { class: "diff" }, ...rows));
    }, (err) => replace(box, h("div", { class: "hint" }, `diff not available: ${errorText(err)}`)));
    return box;
}
function findingActions(taskId, r, index, f, where) {
    const box = h("span", { class: "finding-actions" });
    const done = (s) => replace(box, h("span", { class: "finding-done" }, s === "fixed" ? "fix sent" : "ignored"));
    const current = r.finding_states[String(index)];
    if (current) {
        done(current);
        return box;
    }
    const mark = (s) => put("/api/reviews/{reviewId}/findings/{index}", { path: { reviewId: r.id, index }, body: { state: s } });
    const fix = h("button", { type: "button", class: "finding-fix", title: "Send this finding to the task's agent to fix" }, "fix");
    const ignore = h("button", { type: "button", class: "finding-ignore", title: "Mark this finding done without fixing it; Merge won't warn about it" }, "ignore");
    fix.onclick = async () => {
        const text = `Fix this finding from the review of snapshot #${r.snapshot_n}:\n\n**[${String(f["severity"] ?? "")}] ${String(f["title"] ?? "")}**${where ? ` (\`${where}\`)` : ""}\n\n${String(f["detail"] ?? "")}`;
        fix.disabled = true;
        ignore.disabled = true;
        try {
            const sessions = await get("/api/tasks/{taskId}/sessions", { path: { taskId } });
            const live = sessions.findLast((s) => s.state !== "completed");
            if (live) {
                await post("/api/sessions/{sessionId}/messages", { path: { sessionId: live.id }, body: { text } });
            }
            else {
                await post("/api/tasks/{taskId}/sessions", { path: { taskId }, body: { prompt: text } });
            }
        }
        catch (err) {
            fix.disabled = false;
            ignore.disabled = false;
            void showAlert(errorText(err));
            return;
        }
        done("fixed");
        await mark("fixed").catch((err) => showAlert(`fix sent, but not recorded: ${errorText(err)}`));
    };
    ignore.onclick = async () => {
        fix.disabled = true;
        ignore.disabled = true;
        try {
            await mark("ignored");
            done("ignored");
        }
        catch (err) {
            fix.disabled = false;
            ignore.disabled = false;
            void showAlert(errorText(err));
        }
    };
    replace(box, fix, ignore);
    return box;
}
export function mountReviews(root) {
    const head = h("header", { class: "reviews-header" });
    const body = h("div", { class: "review-list" });
    let reviews;
    let error = "";
    let target = 0;
    let disposed = false;
    const load = async () => {
        const taskId = state.selectedTaskId;
        if (!taskId) {
            render();
            return;
        }
        const started = ++target;
        try {
            const fresh = await get("/api/tasks/{taskId}/reviews", { path: { taskId } });
            if (started === target) {
                reviews = fresh;
                error = "";
            }
        }
        catch (err) {
            if (started === target) {
                reviews = undefined;
                error = errorText(err);
            }
        }
        if (!disposed && started === target) {
            render();
        }
    };
    const render = () => {
        const taskId = state.selectedTaskId;
        replace(head);
        head.hidden = true;
        if (!taskId) {
            replace(body, h("div", { class: "empty" }, "No task selected."));
            return;
        }
        if (error) {
            replace(body, h("div", { class: "empty error-text" }, error));
            return;
        }
        if (!reviews) {
            replace(body, h("div", { class: "empty" }, "Loading…"));
            return;
        }
        if (reviews.length === 0) {
            replace(body, h("div", { class: "empty" }, "No reviews yet. Each new snapshot of the task is reviewed by an agent from the other vendor."));
            return;
        }
        const n = state.reviewed ?? reviews.at(-1).snapshot_n;
        const shown = reviews.findLast((r) => r.snapshot_n === n);
        const ns = [...new Set([n, ...reviews.map((r) => r.snapshot_n)])].sort((a, b) => b - a);
        const picker = h("select", { title: "Snapshot whose review to show" }, ...ns.map((s) => h("option", { value: String(s) }, `snapshot #${s}`)));
        picker.value = String(n);
        picker.onchange = () => pickReview(Number(picker.value));
        const step = (to, label) => {
            const b = h("button", { type: "button", class: "snap-step", disabled: !ns.includes(to) }, label);
            b.onclick = () => pickReview(to);
            return b;
        };
        const next = ns.filter((s) => s > n).at(-1);
        const prev = ns.find((s) => s < n);
        head.hidden = false;
        replace(head, picker, step(prev ?? n - 1, `← #${prev ?? n - 1}`), step(next ?? n + 1, `#${next ?? n + 1} →`));
        replace(body, shown ? reviewCard(shown, taskId) : h("div", { class: "empty" }, `No review of snapshot #${n} yet.`));
    };
    const offs = [
        onEach(["selection"], () => {
            target++;
            reviews = undefined;
            error = "";
            render();
            void load();
        }),
        onEach(["transcript"], (fresh) => {
            if (fresh.some(isReviewEvent)) {
                void load();
            }
        }),
        onEach(["review"], render),
    ];
    replace(root, h("div", { class: "reviews-view" }, head, body));
    render();
    void load();
    return () => {
        disposed = true;
        for (const off of offs) {
            off();
        }
    };
}
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