// ClawdDotNet — Token usage › Runs (#660)
//
// Every run of the selected range: filterable by agent, model, event (source), status,
// cost and free text; sortable by every column; totals over the whole filter, not only
// the visible page. A row opens the run detail with prompt and response.
//
// Strictly DOM API, no innerHTML: results and task titles are foreign text.

import { api } from "../modules/api.js";
import {
  erstelleElement,
  erstelleKarte,
  erstellePlakette,
  formatiereDatumZeit,
  formatiereTokens,
  formatiereKosten
} from "../modules/dom.js";
import { navigiere } from "../modules/router.js";
import { t } from "../modules/i18n.js";
import { readFilters, applyFilters, toApiQuery, loadFacets, buildFilterBar } from "../modules/usage-filters.js";

const PATH = "/verbrauch/runs";
const PAGE_SIZE = 50;

const COLUMNS = [
  { key: "time", label: "runs.col.time" },
  { key: "agent", label: "runs.col.agent" },
  { key: "model", label: "runs.col.model" },
  { key: "source", label: "runs.col.event" },
  { key: "status", label: "runs.col.status" },
  { key: "steps", label: "runs.col.steps", numeric: true },
  { key: "prompt", label: "runs.col.prompt", numeric: true },
  { key: "completion", label: "runs.col.completion", numeric: true },
  { key: "cost", label: "runs.col.cost", numeric: true },
  { key: "duration", label: "runs.col.duration", numeric: true }
];

export function statusBadge(status) {
  const kind = {
    Completed: "erfolg",
    BudgetExceeded: "warnung",
    Truncated: "warnung",
    LoopLimitExceeded: "gefahr",
    RepeatedFailure: "gefahr",
    Failed: "gefahr",
    Cancelled: "neutral"
  }[status] ?? "neutral";
  return erstellePlakette(status, kind);
}

export function sourceLabel(source) {
  const key = `source.${source}`;
  const text = t(key);
  return text === key ? source : text;
}

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

  const filters = readFilters();
  filters.sort ??= "time";
  filters.dir ??= "desc";

  const layout = erstelleElement("div", { klasse: "verbrauch-ansicht" });
  layout.append(erstelleElement("h1", { text: t("runs.title") }));

  const facets = await loadFacets(filters);
  layout.append(buildFilterBar(filters, facets, (next) => applyFilters(PATH, next)));

  const content = erstelleElement("div", {}, erstelleElement("div", { klasse: "hinweis-zentriert", text: t("common.loading") }));
  layout.append(content);
  container.replaceChildren(layout);

  let page;
  try {
    page = await api(`/usage/runs?${toApiQuery(filters, { offset: filters.offset, limit: PAGE_SIZE })}`);
  } catch (err) {
    content.replaceChildren(erstelleKarte(t("runs.unavailable"), [
      erstelleElement("p", { klasse: "gedaempft", text: err.message })
    ]));
    return;
  }

  content.replaceChildren(buildTotals(page.totals), buildTable(page, filters));
}

function buildTotals(totals) {
  const tiles = [
    [t("runs.total.runs"), String(totals.runs)],
    [t("runs.total.prompt"), formatiereTokens(totals.promptTokens)],
    [t("runs.total.completion"), formatiereTokens(totals.completionTokens)],
    [t("runs.total.cached"), formatiereTokens(totals.cachedTokens)],
    [t("runs.total.cost"), formatiereKosten(totals.costUsd)],
    [t("runs.total.notRun"), String(totals.notRun)]
  ];

  const grid = erstelleElement("div", { klasse: "kennzahlen-raster" });
  for (const [label, value] of tiles) {
    grid.append(erstelleElement("div", { klasse: "kennzahl" },
      erstelleElement("div", { klasse: "kennzahl-wert", text: value }),
      erstelleElement("div", { klasse: "kennzahl-titel", text: label })));
  }

  const parts = [grid];
  if (totals.runsWithUnknownCost > 0) {
    parts.push(erstelleElement("p", { klasse: "hinweis", text: t("runs.unknownCost", { n: totals.runsWithUnknownCost }) }));
  }
  return erstelleKarte(t("runs.totals"), parts);
}

function buildTable(page, filters) {
  if (page.items.length === 0) {
    return erstelleKarte(t("runs.empty.title"), [erstelleElement("p", { klasse: "gedaempft", text: t("runs.empty.text") })]);
  }

  const table = erstelleElement("table", { klasse: "daten-tabelle lauf-tabelle" });
  const head = erstelleElement("tr", {});
  for (const column of COLUMNS) {
    const active = filters.sort === column.key;
    const arrow = active ? (filters.dir === "asc" ? " ▲" : " ▼") : "";
    const button = erstelleElement("button", {
      type: "button",
      klasse: "sortier-knopf",
      text: t(column.label) + arrow,
      onclick: () => applyFilters(PATH, {
        ...filters,
        offset: 0,
        sort: column.key,
        dir: active && filters.dir === "desc" ? "asc" : "desc"
      })
    });
    head.append(erstelleElement("th", { klasse: column.numeric ? "zahl" : "", "aria-sort": active ? (filters.dir === "asc" ? "ascending" : "descending") : "none" }, button));
  }
  table.append(erstelleElement("thead", {}, head));

  const body = erstelleElement("tbody", {});
  for (const run of page.items) {
    const open = () => navigiere(`#${PATH}/${encodeURIComponent(run.runId)}`);
    const row = erstelleElement("tr", { klasse: "klickbar", tabindex: "0", onclick: open });
    row.addEventListener("keydown", (event) => { if (event.key === "Enter") open(); });

    const event = erstelleElement("td", {}, erstelleElement("div", { text: sourceLabel(run.source) }));
    if (run.taskTitle || run.taskId) {
      event.append(erstelleElement("div", { klasse: "gedaempft klein", text: run.taskTitle || run.taskId }));
    }

    row.append(
      erstelleElement("td", { text: formatiereDatumZeit(run.occurredAt) }),
      erstelleElement("td", { text: run.agentId }),
      erstelleElement("td", { klasse: "klein", text: run.model || "—" }),
      event,
      erstelleElement("td", {}, statusBadge(run.status)),
      erstelleElement("td", { klasse: "zahl", text: String(run.stepCount) }),
      erstelleElement("td", { klasse: "zahl", text: formatiereTokens(run.promptTokens) }),
      erstelleElement("td", { klasse: "zahl", text: formatiereTokens(run.completionTokens) }),
      erstelleElement("td", { klasse: "zahl", text: run.costIsKnown || run.costUsd > 0 ? formatiereKosten(run.costUsd) : "—" }),
      erstelleElement("td", { klasse: "zahl", text: formatDuration(run.durationMs) })
    );
    body.append(row);
  }
  table.append(body);

  const offset = filters.offset || 0;
  const pager = erstelleElement("div", { klasse: "blaettern" },
    erstelleElement("button", {
      type: "button", klasse: "schaltflaeche flach klein", text: t("common.previous"), disabled: offset <= 0,
      onclick: () => applyFilters(PATH, { ...filters, offset: Math.max(0, offset - PAGE_SIZE) })
    }),
    erstelleElement("span", {
      klasse: "gedaempft",
      text: t("runs.page", { from: offset + 1, to: offset + page.items.length, total: page.total })
    }),
    erstelleElement("button", {
      type: "button", klasse: "schaltflaeche flach klein", text: t("common.next"), disabled: offset + PAGE_SIZE >= page.total,
      onclick: () => applyFilters(PATH, { ...filters, offset: offset + PAGE_SIZE })
    }));

  return erstelleKarte(t("runs.list"), [erstelleElement("div", { klasse: "tabelle-scroll" }, table), pager]);
}

export function formatDuration(ms) {
  if (!ms) return "—";
  if (ms < 1000) return `${ms} ms`;
  const seconds = ms / 1000;
  return seconds < 60 ? `${seconds.toFixed(1)} s` : `${Math.floor(seconds / 60)}:${String(Math.round(seconds % 60)).padStart(2, "0")} min`;
}