Add exit api

fresh.gen.ts

@@ -4,18 +4,20 @@
 
 import config from "./deno.json" assert { type: "json" };
 import * as $0 from "./routes/api/config.ts";
-import * as $1 from "./routes/api/export/gallery/zip/[gid].ts";
-import * as $2 from "./routes/api/task.ts";
-import * as $3 from "./routes/index.tsx";
+import * as $1 from "./routes/api/exit.ts";
+import * as $2 from "./routes/api/export/gallery/zip/[gid].ts";
+import * as $3 from "./routes/api/task.ts";
+import * as $4 from "./routes/index.tsx";
 import * as $$0 from "./islands/Container.tsx";
 import * as $$1 from "./islands/Settings.tsx";
 
 const manifest = {
     routes: {
         "./routes/api/config.ts": $0,
-        "./routes/api/export/gallery/zip/[gid].ts": $1,
-        "./routes/api/task.ts": $2,
-        "./routes/index.tsx": $3,
+        "./routes/api/exit.ts": $1,
+        "./routes/api/export/gallery/zip/[gid].ts": $2,
+        "./routes/api/task.ts": $3,
+        "./routes/index.tsx": $4,
     },
     islands: {
         "./islands/Container.tsx": $$0,

routes/api/exit.ts

@@ -0,0 +1,27 @@
+import { Handlers } from "$fresh/server.ts";
+import { parse_bool } from "../../server/parse_form.ts";
+import { get_task_manager } from "../../server.ts";
+
+export const handler: Handlers = {
+    async POST(req, _ctx) {
+        let force = false;
+        try {
+            const form = await req.formData();
+            force = await parse_bool(form.get("force"), false);
+        } catch (_) {
+            null;
+        }
+        setTimeout(async () => {
+            const m = get_task_manager();
+            const aborted = m.aborted;
+            m.abort();
+            if (force) {
+                m.force_abort();
+            }
+            if (aborted) return;
+            await m.waiting_unfinished_task();
+            m.close();
+        }, 1);
+        return new Response("Aborted.");
+    },
+};

server/parse_form.ts

@@ -0,0 +1,14 @@
+export async function parse_bool<T extends boolean | null>(
+    value: FormDataEntryValue | null,
+    def: T,
+): Promise<boolean | T> {
+    if (value === null) return def;
+    const nv = typeof value === "string" ? value : await value.text();
+    const v = nv.toLowerCase();
+    const n = parseInt(v);
+    if (isNaN(n)) {
+        return v === "true";
+    } else {
+        return n !== 0;
+    }
+}

server/parse_form_test.ts

@@ -0,0 +1,17 @@
+import { assertEquals } from "std/testing/asserts.ts";
+import { parse_bool } from "./parse_form.ts";
+
+Deno.test("parse_bool_test", async () => {
+    const f = new FormData();
+    f.append("a", "d");
+    assertEquals(await parse_bool(f.get("a"), true), false);
+    assertEquals(await parse_bool(f.get("b"), true), true);
+    assertEquals(await parse_bool(f.get("b"), null), null);
+    assertEquals(await parse_bool(f.get("a"), null), false);
+    f.append("c", "1");
+    f.append("d", "TRue");
+    assertEquals(await parse_bool(f.get("c"), null), true);
+    assertEquals(await parse_bool(f.get("d"), null), true);
+    f.append("e", "tRUE", "a.png");
+    assertEquals(await parse_bool(f.get("e"), null), true);
+});