import {
  Action,
  ActionPanel,
  Detail,
  Icon,
  List,
  showToast,
  Toast,
} from "@raycast/api";
import { useEffect, useState } from "react";
import { canonicalProjectPath, listAllRuns } from "./lib/velum-project";
import { listSessions } from "./sessions";
import type { PlaceholderMapping } from "./types";
import { markdownCodeBlock } from "./ui";

type TableSource = {
  id: string;
  title: string;
  subtitle: string;
  mapping: PlaceholderMapping;
};

export function TranslationTable({
  title,
  mapping,
}: {
  title: string;
  mapping: PlaceholderMapping;
}) {
  const groups = new Map<string, Array<[string, PlaceholderMapping[string]]>>();
  for (const entry of Object.entries(mapping).sort(([a], [b]) =>
    a.localeCompare(b),
  )) {
    const type = entry[1].type || "Sonstige";
    const entries = groups.get(type) ?? [];
    entries.push(entry);
    groups.set(type, entries);
  }

  return (
    <List
      navigationTitle={`Übersetzungstabelle · ${title}`}
      searchBarPlaceholder="Platzhalter oder Klartext suchen"
    >
      <List.EmptyView
        title="Keine Zuordnungen"
        description="Für diesen Stand sind noch keine Übersetzungen gespeichert."
      />
      {[...groups]
        .sort(([a], [b]) => a.localeCompare(b))
        .map(([type, entries]) => (
          <List.Section key={type} title={`${type} · ${entries.length}`}>
            {entries.map(([placeholder, entry]) => (
              <List.Item
                key={placeholder}
                icon={Icon.ArrowRight}
                title={placeholder}
                subtitle={entry.original}
                keywords={[entry.original, entry.type, entry.merged_into ?? ""]}
                accessories={
                  entry.merged_into ? [{ text: `→ ${entry.merged_into}` }] : []
                }
                actions={
                  <ActionPanel>
                    <Action.Push
                      title="Eintrag vollständig anzeigen"
                      icon={Icon.Eye}
                      target={
                        <Detail
                          navigationTitle={placeholder}
                          markdown={[
                            `# ${entry.type}`,
                            "",
                            "Platzhalter",
                            markdownCodeBlock(placeholder),
                            "",
                            "Klartext",
                            markdownCodeBlock(entry.original),
                            ...(entry.merged_into
                              ? [
                                  "",
                                  "Zusammengeführt mit",
                                  markdownCodeBlock(entry.merged_into),
                                ]
                              : []),
                          ].join("\n")}
                          actions={
                            <ActionPanel>
                              <Action.CopyToClipboard
                                title="Platzhalter kopieren"
                                content={placeholder}
                              />
                              <Action.CopyToClipboard
                                title="Klartext kopieren"
                                content={entry.original}
                              />
                            </ActionPanel>
                          }
                        />
                      }
                    />
                    <Action.CopyToClipboard
                      title="Platzhalter kopieren"
                      content={placeholder}
                    />
                    <Action.CopyToClipboard
                      title="Klartext kopieren"
                      content={entry.original}
                    />
                  </ActionPanel>
                }
              />
            ))}
          </List.Section>
        ))}
    </List>
  );
}

export default function Command() {
  const [projects, setProjects] = useState<TableSource[]>([]);
  const [sessions, setSessions] = useState<TableSource[]>([]);
  const [busy, setBusy] = useState(true);

  useEffect(() => {
    Promise.all([listAllRuns(), listSessions()])
      .then(([runs, savedSessions]) => {
        const latest = new Map<string, TableSource>();
        for (const { run } of runs) {
          const path = canonicalProjectPath(run.projectPath);
          if (!latest.has(path))
            latest.set(path, {
              id: path,
              title: run.projectName,
              subtitle: `${path} · ${new Date(run.createdAt).toLocaleString("de-AT")}`,
              mapping: run.mapping,
            });
        }
        setProjects(
          [...latest.values()].sort((a, b) => a.title.localeCompare(b.title)),
        );
        setSessions(
          savedSessions.map((session) => ({
            id: session.id,
            title: session.name,
            subtitle: `${Object.keys(session.mapping).length} Zuordnungen · ${new Date(session.updatedAt).toLocaleString("de-AT")}`,
            mapping: session.mapping,
          })),
        );
      })
      .catch((error: Error) =>
        showToast({
          style: Toast.Style.Failure,
          title: "Übersetzungstabellen nicht lesbar",
          message: error.message,
        }),
      )
      .finally(() => setBusy(false));
  }, []);

  return (
    <List
      isLoading={busy}
      navigationTitle="Übersetzungstabellen"
      searchBarPlaceholder="Projekt oder Sitzung suchen"
    >
      <List.EmptyView
        title="Keine Tabellen"
        description="Pseudonymisiere zuerst Text oder Projektdateien."
      />
      <List.Section title="Projekte">
        {projects.map((source) => (
          <List.Item
            key={source.id}
            icon={Icon.Folder}
            title={source.title}
            subtitle={source.subtitle}
            accessories={[
              { text: `${Object.keys(source.mapping).length} Zuordnungen` },
            ]}
            actions={
              <ActionPanel>
                <Action.Push
                  title="Übersetzungstabelle anzeigen"
                  icon={Icon.List}
                  target={
                    <TranslationTable
                      title={source.title}
                      mapping={source.mapping}
                    />
                  }
                />
              </ActionPanel>
            }
          />
        ))}
      </List.Section>
      <List.Section title="Sitzungen">
        {sessions.map((source) => (
          <List.Item
            key={source.id}
            icon={Icon.Person}
            title={source.title}
            subtitle={source.subtitle}
            actions={
              <ActionPanel>
                <Action.Push
                  title="Übersetzungstabelle anzeigen"
                  icon={Icon.List}
                  target={
                    <TranslationTable
                      title={source.title}
                      mapping={source.mapping}
                    />
                  }
                />
              </ActionPanel>
            }
          />
        ))}
      </List.Section>
    </List>
  );
}