// ClawdDotNet — run detail: prompt, response and every step in between (#660)
//
// Reached from Token usage › Runs and from Prompt History. Shows the receipt, the recorded
// transcript (task, each model step with its tokens and cost, each tool call and result),
// the system prompt, and what the run proposed for approval.
//
// Everything in a transcript is foreign text - model output, web pages, database rows.
// It is only ever inserted via textContent.

import { api } from "../modules/api.js";
import {
  erstelleElement,
  erstelleKarte,
  erstellePlakette,
  formatiereDatumZeit,
  formatiereTokens,
  formatiereKosten
} from "../modules/dom.js";
import { t } from "../modules/i18n.js";
import { statusBadge, sourceLabel, formatDuration } from "./usage-runs.js";

export async function renderRunDetail(runId, backPath) {
  const container = document.getElementById("ansicht-inhalt");
  if (!container) return;

  const back = erstelleElement("a", { href: `#${backPath}`, klasse: "zurueck-link", text: t("detail.back") });
  // Back to the filtered list if we came from one.
  back.addEventListener("click", (event) => {
    if (window.history.length > 1) {
      event.preventDefault();
      window.history.back();
    }
  });

  const layout = erstelleElement("div", { klasse: "verbrauch-ansicht lauf-detail" }, back,
    erstelleElement("h1", { text: t("detail.title") }),
    erstelleElement("div", { klasse: "hinweis-zentriert", text: t("common.loading") }));
  container.replaceChildren(layout);

  let run;
  try {
    run = await api(`/runs/${encodeURIComponent(runId)}`);
  } catch (err) {
    layout.lastChild.replaceWith(erstelleKarte(t("detail.notFound"), [
      erstelleElement("p", { klasse: "gedaempft", text: err.message })
    ]));
    return;
  }

  const parts = [buildReceipt(run)];
  parts.push(run.transcript ? buildTranscript(run) : buildTranscriptState(run));
  if (!run.transcript && run.toolCalls.length > 0) parts.push(buildToolCalls(run.toolCalls));
  if (run.approvals.length > 0) parts.push(buildApprovals(run.approvals));

  layout.lastChild.replaceWith(...parts);
}

function buildReceipt(run) {
  const r = run.receipt;
  const list = erstelleElement("dl", { klasse: "datenliste" });
  const add = (label, value) => list.append(
    erstelleElement("dt", { text: t(label) }),
    value instanceof Node ? erstelleElement("dd", {}, value) : erstelleElement("dd", { text: value ?? "—" }));

  add("detail.runId", run.runId);
  if (r) {
    add("runs.col.time", formatiereDatumZeit(r.occurredAt));
    add("runs.col.agent", r.agentId);
    add("runs.col.model", r.model);
    add("runs.col.event", r.taskTitle ? `${sourceLabel(r.source)} · ${r.taskTitle}` : sourceLabel(r.source));
    add("runs.col.status", statusBadge(r.status));
    add("runs.col.steps", String(r.stepCount));
    add("detail.tokens", t("detail.tokensValue", {
      prompt: formatiereTokens(r.promptTokens),
      completion: formatiereTokens(r.completionTokens),
      cached: formatiereTokens(r.cachedTokens)
    }));
    add("runs.col.cost", r.costIsKnown || r.costUsd > 0 ? formatiereKosten(r.costUsd) : "—");
    add("runs.col.duration", formatDuration(r.durationMs));
    if (r.result) add("detail.result", r.result);
  }
  return erstelleKarte(t("detail.receipt"), [list]);
}

function buildTranscriptState(run) {
  const text = {
    disabled: t("detail.transcript.disabled"),
    unavailable: t("detail.transcript.unavailable"),
    missing: t("detail.transcript.missing")
  }[run.transcriptState] ?? t("detail.transcript.missing");
  return erstelleKarte(t("detail.transcript"), [erstelleElement("p", { klasse: "gedaempft", text })]);
}

function pre(text) {
  return erstelleElement("pre", { klasse: "code-block transkript-text", text: text ?? "" });
}

function prettyJson(text) {
  if (!text) return "";
  try {
    return JSON.stringify(JSON.parse(text), null, 2);
  } catch {
    return text;
  }
}

function buildTranscript(run) {
  const transcript = run.transcript;
  const items = [];

  if (run.systemPrompt) {
    const details = erstelleElement("details", { klasse: "transkript-system" },
      erstelleElement("summary", { text: t("detail.systemPrompt", { n: run.systemPrompt.length }) }),
      pre(run.systemPrompt));
    items.push(details);
  }

  if (transcript.truncated) {
    items.push(erstelleElement("div", { klasse: "hinweis-box warnung", text: t("detail.transcript.truncated") }));
  }

  let step = 0;
  for (const entry of transcript.entries) {
    const kind = entry.kind;
    const block = erstelleElement("div", { klasse: `transkript-eintrag art-${kind}` });
    const head = erstelleElement("div", { klasse: "transkript-kopf" });

    if (kind === "assistant") {
      step++;
      head.append(erstelleElement("strong", { text: t("detail.entry.assistant", { n: step }) }));
      if (entry.promptTokens !== undefined && entry.promptTokens !== null) {
        head.append(erstellePlakette(t("detail.entry.usage", {
          prompt: formatiereTokens(entry.promptTokens),
          completion: formatiereTokens(entry.completionTokens ?? 0)
        }), "neutral"));
      }
      if (entry.costUsd) head.append(erstellePlakette(formatiereKosten(entry.costUsd), "neutral"));
      if (entry.finishReason && entry.finishReason !== "stop" && entry.finishReason !== "tool_calls") {
        head.append(erstellePlakette(entry.finishReason, "warnung"));
      }
    } else {
      head.append(erstelleElement("strong", {
        text: kind === "tool_result"
          ? t("detail.entry.tool_result", { tool: entry.toolName ?? "?" })
          : t(`detail.entry.${kind}`)
      }));
    }
    head.append(erstelleElement("span", { klasse: "gedaempft klein", text: formatiereDatumZeit(entry.at) }));
    if (entry.clipped) head.append(erstellePlakette(t("detail.entry.clipped"), "warnung"));
    block.append(head);

    if (entry.text) block.append(pre(entry.text));

    for (const call of entry.toolCalls ?? []) {
      block.append(erstelleElement("div", { klasse: "transkript-aufruf" },
        erstelleElement("span", { klasse: "klein", text: t("detail.entry.call", { tool: call.name }) }),
        pre(prettyJson(call.arguments))));
    }

    items.push(block);
  }

  const summary = t("detail.transcript.size", { n: transcript.entries.length, chars: formatiereTokens(transcript.sizeChars) });
  return erstelleKarte(t("detail.transcript"), [erstelleElement("p", { klasse: "hinweis", text: summary }), ...items]);
}

function buildToolCalls(calls) {
  const table = erstelleElement("table", { klasse: "daten-tabelle" });
  const head = erstelleElement("tr", {});
  for (const label of ["runs.col.time", "detail.tool", "runs.col.status", "detail.arguments"]) {
    head.append(erstelleElement("th", { text: t(label) }));
  }
  table.append(head);
  for (const call of calls) {
    table.append(erstelleElement("tr", {},
      erstelleElement("td", { text: formatiereDatumZeit(call.at) }),
      erstelleElement("td", { text: call.tool }),
      erstelleElement("td", { text: call.status }),
      erstelleElement("td", {}, pre(prettyJson(call.arguments)))));
  }
  return erstelleKarte(t("detail.toolCalls"), [
    erstelleElement("p", { klasse: "hinweis", text: t("detail.toolCalls.hint") }),
    erstelleElement("div", { klasse: "tabelle-scroll" }, table)
  ]);
}

function buildApprovals(approvals) {
  const list = erstelleElement("ul", { klasse: "schlichte-liste" });
  for (const a of approvals) {
    list.append(erstelleElement("li", {},
      erstelleElement("strong", { text: `#${a.id} ${a.tool}.${a.action ?? "?"} ` }),
      erstellePlakette(a.status, a.status === "Executed" ? "erfolg" : a.status === "Pending" ? "warnung" : "neutral")));
  }
  return erstelleKarte(t("detail.approvals"), [list]);
}