snapshot

2026-04-16 12:55:18 +02:00
parent 97dc4d043a
commit dfbcd20ab6
14 changed files with 723 additions and 116 deletions
@@ -0,0 +1,234 @@
+import type { Database } from "bun:sqlite";
+import { getDb } from "./db";
+
+export type SnippetRow = {
+  id: number;
+  title: string | null;
+  body: string;
+  sort_order: number;
+  created_at: string;
+  updated_at: string;
+  tags: string[];
+};
+
+function escapeLike(raw: string): string {
+  return raw.replaceAll("\\", "\\\\").replaceAll("%", "\\%").replaceAll("_", "\\_");
+}
+
+function nowIso(): string {
+  return new Date().toISOString();
+}
+
+function orderClause(sort: string): string {
+  switch (sort) {
+    case "updated_asc":
+      return "ORDER BY s.updated_at ASC, s.id ASC";
+    case "title_asc":
+      return "ORDER BY s.title COLLATE NOCASE ASC NULLS LAST, s.updated_at DESC";
+    case "title_desc":
+      return "ORDER BY s.title COLLATE NOCASE DESC NULLS LAST, s.updated_at DESC";
+    case "manual":
+      return "ORDER BY s.sort_order ASC, s.updated_at DESC";
+    case "updated_desc":
+    default:
+      return "ORDER BY s.updated_at DESC, s.id DESC";
+  }
+}
+
+function loadTagsForSnippetIds(database: Database, ids: number[]): Map<number, string[]> {
+  const map = new Map<number, string[]>();
+  if (ids.length === 0) return map;
+  const placeholders = ids.map(() => "?").join(", ");
+  const rows = database
+    .query(
+      `SELECT st.snippet_id, t.name
+       FROM snippet_tags st
+       JOIN tags t ON t.id = st.tag_id
+       WHERE st.snippet_id IN (${placeholders})
+       ORDER BY t.name COLLATE NOCASE ASC`,
+    )
+    .all(...ids) as { snippet_id: number; name: string }[];
+  for (const id of ids) map.set(id, []);
+  for (const row of rows) {
+    const list = map.get(row.snippet_id);
+    if (list) list.push(row.name);
+  }
+  return map;
+}
+
+function rowToPublic(
+  row: {
+    id: number;
+    title: string | null;
+    body: string;
+    sort_order: number;
+    created_at: string;
+    updated_at: string;
+  },
+  tags: string[],
+): SnippetRow {
+  return {
+    id: row.id,
+    title: row.title,
+    body: row.body,
+    sort_order: row.sort_order,
+    created_at: row.created_at,
+    updated_at: row.updated_at,
+    tags,
+  };
+}
+
+export function listSnippets(q: string | null, sort: string | null): SnippetRow[] {
+  const database = getDb();
+  const order = orderClause(sort ?? "updated_desc");
+  const trimmed = (q ?? "").trim();
+
+  let rows: {
+    id: number;
+    title: string | null;
+    body: string;
+    sort_order: number;
+    created_at: string;
+    updated_at: string;
+  }[];
+
+  if (trimmed === "") {
+    rows = database
+      .query(
+        `SELECT s.id, s.title, s.body, s.sort_order, s.created_at, s.updated_at
+         FROM snippets s
+         ${order}`,
+      )
+      .all() as typeof rows;
+  } else {
+    const term = escapeLike(trimmed);
+    rows = database
+      .query(
+        `SELECT s.id, s.title, s.body, s.sort_order, s.created_at, s.updated_at
+         FROM snippets s
+         WHERE s.title LIKE '%' || ?1 || '%' ESCAPE '\\'
+            OR s.body LIKE '%' || ?1 || '%' ESCAPE '\\'
+            OR EXISTS (
+              SELECT 1 FROM snippet_tags st
+              JOIN tags t ON t.id = st.tag_id
+              WHERE st.snippet_id = s.id
+                AND t.name LIKE '%' || ?1 || '%' ESCAPE '\\'
+            )
+         ${order}`,
+      )
+      .all(term) as typeof rows;
+  }
+
+  const ids = rows.map(r => r.id);
+  const tagMap = loadTagsForSnippetIds(database, ids);
+  return rows.map(r => rowToPublic(r, tagMap.get(r.id) ?? []));
+}
+
+export function getSnippetById(id: number): SnippetRow | null {
+  const database = getDb();
+  const row = database
+    .query(
+      `SELECT id, title, body, sort_order, created_at, updated_at FROM snippets WHERE id = ?`,
+    )
+    .get(id) as
+    | {
+        id: number;
+        title: string | null;
+        body: string;
+        sort_order: number;
+        created_at: string;
+        updated_at: string;
+      }
+    | undefined;
+  if (!row) return null;
+  const tagMap = loadTagsForSnippetIds(database, [row.id]);
+  return rowToPublic(row, tagMap.get(row.id) ?? []);
+}
+
+function getOrCreateTagId(database: Database, name: string): number | null {
+  const trimmed = name.trim();
+  if (!trimmed) return null;
+  database.run(`INSERT OR IGNORE INTO tags (name) VALUES (?)`, [trimmed]);
+  const row = database.query(`SELECT id FROM tags WHERE name = ? COLLATE NOCASE`).get(trimmed) as
+    | { id: number }
+    | undefined;
+  return row?.id ?? null;
+}
+
+function replaceSnippetTags(database: Database, snippetId: number, tagNames: string[]) {
+  database.run(`DELETE FROM snippet_tags WHERE snippet_id = ?`, [snippetId]);
+  const unique = [...new Set(tagNames.map(t => t.trim()).filter(Boolean))];
+  if (unique.length === 0) return;
+  const insertLink = database.prepare(`INSERT OR IGNORE INTO snippet_tags (snippet_id, tag_id) VALUES (?, ?)`);
+  for (const name of unique) {
+    const tagId = getOrCreateTagId(database, name);
+    if (tagId !== null) insertLink.run(snippetId, tagId);
+  }
+}
+
+export function createSnippet(input: {
+  title?: string | null;
+  body?: string;
+  tags?: string[];
+  sort_order?: number;
+}): SnippetRow {
+  const database = getDb();
+  const t = nowIso();
+  const title = input.title === undefined || input.title === "" ? null : String(input.title);
+  const body = input.body ?? "";
+  const sortOrder = typeof input.sort_order === "number" ? input.sort_order : Date.now();
+
+  database.run(
+    `INSERT INTO snippets (title, body, sort_order, created_at, updated_at) VALUES (?, ?, ?, ?, ?)`,
+    [title, body, sortOrder, t, t],
+  );
+  const idRow = database.query(`SELECT last_insert_rowid() AS id`).get() as { id: number };
+  const newId = Number(idRow.id);
+  replaceSnippetTags(database, newId, input.tags ?? []);
+  return getSnippetById(newId)!;
+}
+
+export function updateSnippet(
+  id: number,
+  input: {
+    title?: string | null;
+    body?: string;
+    tags?: string[];
+    sort_order?: number;
+  },
+): SnippetRow | null {
+  const database = getDb();
+  const existing = database.query(`SELECT id FROM snippets WHERE id = ?`).get(id) as { id: number } | undefined;
+  if (!existing) return null;
+
+  const current = database
+    .query(`SELECT title, body, sort_order FROM snippets WHERE id = ?`)
+    .get(id) as {
+    title: string | null;
+    body: string;
+    sort_order: number;
+  };
+
+  const title =
+    input.title === undefined ? current.title : input.title === "" || input.title === null ? null : String(input.title);
+  const body = input.body === undefined ? current.body : String(input.body);
+  const sort_order = input.sort_order === undefined ? current.sort_order : input.sort_order;
+  const t = nowIso();
+
+  database.run(
+    `UPDATE snippets SET title = ?, body = ?, sort_order = ?, updated_at = ? WHERE id = ?`,
+    [title, body, sort_order, t, id],
+  );
+
+  if (input.tags !== undefined) {
+    replaceSnippetTags(database, id, input.tags);
+  }
+
+  return getSnippetById(id);
+}
+
+export function deleteSnippet(id: number): boolean {
+  const database = getDb();
+  const res = database.run(`DELETE FROM snippets WHERE id = ?`, [id]);
+  return res.changes > 0;
+}