fix: wrong month stats and db cache undefined handling

src/db.ts

@@ -1,6 +1,6 @@
-import { type Accessor, createEffect, createMemo, createRoot, createSignal, DEV, type Setter } from "solid-js";
+import { createEffect, createMemo, createRoot, createSignal } from "solid-js";
 
-import { Kysely, type NotNull, sql } from "kysely";
+import { Kysely, sql, type NotNull } from "kysely";
 import type { DB } from "kysely-codegen";
 import { SqlJsDialect } from "kysely-wasm";
 import initSqlJS, { type Database } from "sql.js";
@@ -14,25 +14,10 @@ export const SQL = await initSqlJS({
   locateFile: () => wasmURL,
 });
 
-let rawDb: Accessor<Database | undefined> = () => undefined,
-  setRawDb: Setter<Database | undefined> = () => undefined;
-
-if (DEV) {
-  const file = await import("./assets/database.sqlite?url").then((result) => {
-    return fetch(result.default).then((res) => res.arrayBuffer());
-  });
-
-  const testDb = new SQL.Database(new Uint8Array(file));
-
-  [rawDb, setRawDb] = createSignal<Database | undefined>(testDb);
-} else {
-  [rawDb, setRawDb] = createSignal<Database | undefined>();
-}
-
-export { rawDb as db, setRawDb as setDb };
+export const [db, setDb] = createSignal<Database | undefined>();
 
 const sqlJsDialect = () => {
-  const currentDb = rawDb();
+  const currentDb = db();
 
   if (currentDb) {
     return new SqlJsDialect({
@@ -43,10 +28,10 @@ const sqlJsDialect = () => {
 
 const kyselyDb = createRoot(() => {
   createEffect(() => {
-    const db = rawDb();
+    const currentDb = db();
 
-    if (db) {
-      db.create_function("is_not_empty", (str: string | null) => {
+    if (currentDb) {
+      currentDb.create_function("is_not_empty", (str: string | null) => {
         return str !== null && str !== "";
       });
     }
@@ -56,7 +41,7 @@ const kyselyDb = createRoot(() => {
     const currentSqlJsDialect = sqlJsDialect();
 
     if (!currentSqlJsDialect) {
-      throw new Error("no db selected!");
+      return;
     }
 
     return new Kysely<DB>({
@@ -65,46 +50,47 @@ const kyselyDb = createRoot(() => {
   });
 });
 
-const allThreadsOverviewQueryRaw = kyselyDb()
-  .selectFrom("thread")
-  .innerJoin(
-    (eb) =>
-      eb
-        .selectFrom("message")
-        .select((eb) => ["message.thread_id", eb.fn.countAll().as("message_count")])
-        .where((eb) => {
-          return eb.and([eb("message.body", "is not", null), eb("message.body", "is not", "")]);
-        })
-        .groupBy("message.thread_id")
-        .as("message"),
-    (join) => join.onRef("message.thread_id", "=", "thread._id"),
-  )
-  .innerJoin("recipient", "thread.recipient_id", "recipient._id")
-  .leftJoin("groups", "recipient._id", "groups.recipient_id")
-  .select([
-    "thread._id as thread_id",
-    "thread.recipient_id",
-    "thread.archived",
-    "recipient.profile_joined_name",
-    "recipient.system_joined_name",
-    "groups.title",
-    "message_count",
-    "thread.date as last_message_date",
-    "recipient.nickname_joined_name",
-  ])
-  .where("message_count", ">", 0)
-  .$narrowType<{
-    thread_id: NotNull;
-    archived: NotNull;
-    message_count: number;
-  }>()
-  .compile();
+const allThreadsOverviewQueryRaw = () =>
+  kyselyDb()
+    ?.selectFrom("thread")
+    .innerJoin(
+      (eb) =>
+        eb
+          .selectFrom("message")
+          .select((eb) => ["message.thread_id", eb.fn.countAll().as("message_count")])
+          .where((eb) => {
+            return eb.and([eb("message.body", "is not", null), eb("message.body", "is not", "")]);
+          })
+          .groupBy("message.thread_id")
+          .as("message"),
+      (join) => join.onRef("message.thread_id", "=", "thread._id"),
+    )
+    .innerJoin("recipient", "thread.recipient_id", "recipient._id")
+    .leftJoin("groups", "recipient._id", "groups.recipient_id")
+    .select([
+      "thread._id as thread_id",
+      "thread.recipient_id",
+      "thread.archived",
+      "recipient.profile_joined_name",
+      "recipient.system_joined_name",
+      "groups.title",
+      "message_count",
+      "thread.date as last_message_date",
+      "recipient.nickname_joined_name",
+    ])
+    .where("message_count", ">", 0)
+    .$narrowType<{
+      thread_id: NotNull;
+      archived: NotNull;
+      message_count: number;
+    }>()
+    .execute();
 
-export const allThreadsOverviewQuery = cached(() => kyselyDb().executeQuery(allThreadsOverviewQueryRaw));
+export const allThreadsOverviewQuery = cached(allThreadsOverviewQueryRaw);
 
 const overallSentMessagesQueryRaw = (recipientId: number) =>
   kyselyDb()
-    .selectFrom("message")
+    ?.selectFrom("message")
     .select((eb) => eb.fn.countAll().as("messageCount"))
     .where((eb) =>
       eb.and([
@@ -119,7 +105,7 @@ export const overallSentMessagesQuery = cached(overallSentMessagesQueryRaw);
 
 const dmPartnerRecipientQueryRaw = (dmId: number) =>
   kyselyDb()
-    .selectFrom("recipient")
+    ?.selectFrom("recipient")
     .select([
       "recipient._id",
       "recipient.system_joined_name",
@@ -137,7 +123,7 @@ export const dmPartnerRecipientQuery = cached(dmPartnerRecipientQueryRaw);
 
 const threadSentMessagesOverviewQueryRaw = (threadId: number) =>
   kyselyDb()
-    .selectFrom("message")
+    ?.selectFrom("message")
     .select(["from_recipient_id", sql<string>`datetime(date_sent / 1000, 'unixepoch')`.as("message_datetime")])
     .orderBy(["message_datetime"])
     .where((eb) => eb.and([eb("body", "is not", null), eb("body", "!=", ""), eb("thread_id", "=", threadId)]))
@@ -147,7 +133,7 @@ export const threadSentMessagesOverviewQuery = cached(threadSentMessagesOverview
 
 const threadMostUsedWordsQueryRaw = (threadId: number, limit = 10) =>
   kyselyDb()
-    .withRecursive("words", (eb) => {
+    ?.withRecursive("words", (eb) => {
       return eb
         .selectFrom("message")
         .select([

src/lib/db-cache.ts

@@ -142,7 +142,9 @@ export const cached = <T extends unknown[], R, TT>(fn: (...args: T) => R, self?:
     isPromise = promisified == newValue;
 
     void promisified.then((result) => {
-      cache.set(cacheName, cacheKey, result);
+      if (result !== undefined) {
+        cache.set(cacheName, cacheKey, result);
+      }
     });
 
     return newValue;

src/lib/messages.ts

@@ -57,8 +57,7 @@ export const createMessageStatsSources = (
         person[message.fromRecipientId] += 1;
 
         // increment the message count of the message's month for this recipient
-        // months are an array from 0 - 11
-        month[messageDate.getMonth() - 1][message.fromRecipientId] += 1;
+        month[messageDate.getMonth()][message.fromRecipientId] += 1;
 
         // biome-ignore lint/style/noNonNullAssertion: <explanation>
         const dateStatsEntry = date.find(({ date }) => isSameDay(date, messageDate))!;

src/pages/overview/index.tsx

@@ -10,8 +10,8 @@ import { Title } from "@solidjs/meta";
 export const Overview: Component<RouteSectionProps> = () => {
   const [allSelfSentMessagesCount] = createResource(() => overallSentMessagesQuery(SELF_ID));
 
-  const [roomOverview] = createResource<RoomOverview[]>(async () => {
-    return (await allThreadsOverviewQuery()).rows.map((row) => {
+  const [roomOverview] = createResource<RoomOverview[] | undefined>(async () => {
+    return (await allThreadsOverviewQuery())?.map((row) => {
       const isGroup = row.title !== null;
 
       let name = "";