1 files changed, 42 insertions, 0 deletions
diff --git a/frontend/query.ts b/frontend/query.ts
new file mode 100644
index 0000000..c0cc9ea
--- /dev/null
+++ b/frontend/query.ts
@@ -0,0 +1,42 @@
+import { status } from "./ui.ts"
+
+// TODO embed this information into bangs.js
+const ENGINE_NAMES: {[key:string]:string} = {
+    "ddg": "DuckDuckGo",
+    "qw": "Qwant",
+    "qwl": "Qwant Lite",
+    "g": "Google",
+}
+
+interface Bangs { [key: string]: { url: string, name: string } }
+export let bangs: Promise<Bangs>;
+export function load_bangs() {
+    status("info", "Loading bangs...")
+    bangs = new Promise(r => {
+        (async () => {
+            const bangs_res = await fetch("/bangs.json")
+            if (!bangs_res.ok) return status("error", "could not download bangs.json")
+            const k: {[key:string]:string} = await bangs_res.json()
+            status("info", "Bangs loaded.")
+            r(Object.fromEntries(Object.entries(k).map(([key,url]) => [key, { url, name: ENGINE_NAMES[key] ?? key }])))
+        })()
+    })
+}
+
+export async function process_query(default_engine: string, query: string) {
+    const bang_prefix = "!"
+    let url = ""
+    if (query.startsWith(bang_prefix)) {
+        const [engine, ...query_parts] = query.substring(bang_prefix.length).split(" ")
+        url = await search_url(engine, query_parts.join(" "))
+    } else {
+        url = await search_url(default_engine, query)
+    }
+
+    status("success", `Forwarding to ${url}`)
+    setTimeout(() => document.location.href = url, 0)
+}
+
+async function search_url(engine: string, query: string) {
+    return (await bangs)[engine].url.replace("{{{s}}}", encodeURIComponent(query).replaceAll("%20", "+"))
+}