3 files changed, 97 insertions, 76 deletions

diff --git a/src/services/dedupe.ts b/src/services/dedupe.ts
deleted file mode 100644
index 2eeb5ee..0000000
--- a/src/services/dedupe.ts
+++ /dev/null
@@ -1,65 +0,0 @@
-import fs from "fs/promises";
-import path from "path";
-import * as f from "fp-ts";
-import * as t from "io-ts";
-
-export const E926DedupeEntryC = t.type({
-    provider: t.literal("e926"),
-    id: t.number,
-});
-
-export const DedupeEntryC = E926DedupeEntryC;
-
-export type E926DedupeEntry = t.TypeOf<typeof E926DedupeEntryC>;
-
-export type DedupeEntry = t.TypeOf<typeof DedupeEntryC>;
-
-export class Dedupe {
-    private entries: DedupeEntry[] = [];
-
-    private readonly filePath: string;
-
-    private isLoaded = false;
-
-    constructor(private max: number, filename: string) {
-        this.filePath = path.join(process.cwd(), filename);
-    }
-
-    private async load() {
-        if (this.isLoaded) {
-            return;
-        }
-
-        try {
-            await fs.stat(this.filePath);
-        } catch {
-            await this.save();
-        }
-
-        const fileContent = await fs.readFile(this.filePath, "utf8");
-        const entries = t.array(DedupeEntryC).decode(fileContent);
-
-        if (f.either.isRight(entries)) {
-            this.entries = entries.right;
-        }
-    }
-
-    private async save() {
-        await fs.writeFile(this.filePath, JSON.stringify(this.entries ?? []), "utf8");
-    }
-
-    async check(entry: DedupeEntry) {
-        await this.load();
-
-        const has = !!this.entries.find((e) => e.provider === entry.provider && e.id === entry.id);
-
-        if (!has) {
-            this.entries.push(entry);
-            await this.save();
-        }
-
-        return has;
-    }
-}
-
-export default new Dedupe(50, "dedupe.json");
diff --git a/src/services/jobs.ts b/src/services/jobs.ts
index cf3b894..354c66d 100644
--- a/src/services/jobs.ts
+++ b/src/services/jobs.ts
@@ -1,8 +1,18 @@
-import * as e621 from "../api/e621";
+import * as e621 from "../api/e926";
 import * as mastodon from "../api/mastodon";
 import config from "../config";
 import Sharp from "sharp";
 
+export async function postSpecificPicture(id: number) {
+    console.log(`Fetching post ${id}...`);
+
+    const post = await e621.getPostById(id);
+
+    console.log(`Got ${post.id}`);
+
+    await handlePost(post);
+}
+
 export async function postRandomPicture() {
   console.log("Fetching random post...");
 
@@ -15,16 +25,6 @@ export async function postRandomPicture() {
   await handlePost(post);
 }
 
-export async function postSpecificPicture(id: number) {
-    console.log(`Fetching post ${id}...`);
-
-    const post = await e621.getPostById(id);
-
-    console.log(`Got ${post.id}`);
-
-    await handlePost(post);
-}
-
 async function handlePost(post: e621.Post) {
     const source = post.sources.length ? post.sources[0] : undefined;
     const cws = config.cw.filter((w) => post.tags.general.includes(w));
diff --git a/src/services/postDatabase.ts b/src/services/postDatabase.ts
new file mode 100644
index 0000000..e3be7bb
--- /dev/null
+++ b/src/services/postDatabase.ts
@@ -0,0 +1,86 @@
+import fs from "fs/promises";
+import path from "path";
+import * as f from "fp-ts";
+import * as t from "io-ts";
+
+export const PostDatabaseEntryC = t.type({
+    provider: t.literal("e926"),
+    id: t.number,
+});
+
+export type PostDatabaseEntry = t.TypeOf<typeof PostDatabaseEntryC>;
+
+export class PostDatabase {
+    private entries: PostDatabaseEntry[] = [];
+
+    private readonly filePath: string;
+
+    private isLoaded = false;
+
+    constructor(filename: string, private max?: number) {
+        this.filePath = path.join(process.cwd(), filename);
+    }
+
+    private async load() {
+        if (this.isLoaded) {
+            return;
+        }
+
+        try {
+            await fs.stat(this.filePath);
+        } catch {
+            await this.save();
+        }
+
+        const fileContent = await fs.readFile(this.filePath, "utf8");
+        const entries = t.array(PostDatabaseEntryC).decode(fileContent);
+
+        if (f.either.isRight(entries)) {
+            this.entries = this.max ? entries.right.slice(0, -1 * this.max) : entries.right;
+        }
+    }
+
+    private async save() {
+        await fs.writeFile(this.filePath, JSON.stringify(this.entries), "utf8");
+    }
+
+    async insertIfNotExists(entry: PostDatabaseEntry): Promise<boolean> {
+        await this.load();
+
+        const has = !!this.entries.find((e) => e.provider === entry.provider && e.id === entry.id);
+
+        if (!has) {
+            this.entries.push(entry);
+            await this.save();
+        }
+
+        return has;
+    }
+
+    async takeFirst(): Promise<PostDatabaseEntry | undefined> {
+        await this.load();
+        const entry = this.entries.shift();
+        await this.save();
+        return entry;
+    }
+
+    async remove(entry: PostDatabaseEntry): Promise<boolean> {
+        await this.load();
+        const i = this.entries.findIndex((e) => e.provider === entry.provider && e.id === entry.id);
+
+        if (i === -1) {
+            return false;
+        }
+
+        this.entries.splice(i, 1);
+        await this.save();
+        return true;
+    }
+
+    async getCount() {
+        await this.load();
+        return this.entries.length;
+    }
+}
+
+export default PostDatabase;