Added a localStorage-based local prelude feature

Signed-off-by: Jacob Torrey <jacob@thinkst.com>

nlzmadetect/aidetect.html

@@ -8,7 +8,8 @@
             <h1>LZMA-based LLM text classifier</h1>
             <textarea id="text_input" placeholder="Put text to classify in here..." style="width: 75%; height: 25%;"></textarea><br /><br />
             <input type="text" id="preset_value" size="1" disabled hidden/><button onclick="time_do_detect();" id="processbtn">Click here to classify!</button><br /><br />
-            <span id="output_span">The results will appear here!</span>
+            <span id="output_span">The results will appear here!</span><br /><br />
+            <button onclick="add_to_lp()" id="addlp" hidden>That should have been classified as AI! Be better!</button>
         </div>
         <script type="application/javascript">
             async function time_do_detect() {
@@ -21,6 +22,7 @@
                 const end = Date.now();
                 document.getElementById("processbtn").disabled = false;
                 document.getElementById("processbtn").innerText = "Click here to classify!";
+                document.getElementById("addlp").hidden = false;
                 console.log("Processing " + ilen + " bytes took " + (end - start) + " ms");
             }
         </script>

nlzmadetect/src/nlzmadetect.nim

@@ -9,10 +9,12 @@ import strutils
 when isMainModule and defined(c):
   import std/[parseopt, os]
 
+when defined(js):
+  var local_prelude : string = ""
+
 const COMPRESSION_PRESET = 1.int32
 const SHORT_SAMPLE_THRESHOLD = 350
 
-
 const PRELUDE_FILE = "../../ai-generated.txt"
 const PRELUDE_STR = staticRead(PRELUDE_FILE)
 proc compress_str(s : string, preset = COMPRESSION_PRESET): float64
@@ -20,6 +22,9 @@ var PRELUDE_RATIO = compress_str("")
 
 when defined(js):
   var console {.importc, nodecl.}: JsObject
+  proc getLocalStorageItem(key : cstring) : JsObject {.importjs: "localStorage.getItem(#)".}
+  proc setLocalStorageItem(key : cstring, val : cstring) {.importjs: "localStorage.setItem(#, #)".}
+
   proc compress(str : cstring, mode : int) : seq[byte] {.importjs: "LZMA.compress(#, #)".}
   console.log("Initialized with a prelude compression ratio of: " & $PRELUDE_RATIO)
 
@@ -31,12 +36,13 @@ proc ti_compress(input : cstring, preset: int32, check: int32): seq[byte] =
     return compress(input, preset)
 
 proc compress_str(s : string, preset = COMPRESSION_PRESET): float64 =
-  let
-    in_len = PRELUDE_STR.len + s.len
-  var combined : string = PRELUDE_STR & s
   when defined(c):
+    let in_len = PRELUDE_STR.len + s.len
+    var combined : string = PRELUDE_STR & s
     combined = convert(PRELUDE_STR & s, "us-ascii", "UTF-8").replace(re"[^\x00-\x7F]")
   when defined(js):
+    let in_len = PRELUDE_STR.len + local_prelude.len + s.len
+    var combined : string = PRELUDE_STR & local_prelude & s
     let nonascii = newRegExp(r"[^\x00-\x7F]")
     combined = $combined.cstring.replace(nonascii, "")
   let out_len = ti_compress(combined.cstring, preset, 0.int32).len
@@ -149,6 +155,21 @@ when defined(c) and isMainModule:
 
 when defined(js) and isMainModule:
   document.getElementById("preset_value").value = ($COMPRESSION_PRESET).cstring
+  if getLocalStorageItem("local_prelude") != jsNull:
+    local_prelude = $(getLocalStorageItem("local_prelude").to(cstring))
+    PRELUDE_RATIO = compress_str("")
+    console.log("New prelude compression ratio of: " & $PRELUDE_RATIO)
+
+  proc add_to_lp() {.exportc.} =
+    let new_text = document.getElementById("text_input").value
+    local_prelude = local_prelude & "\n" & ($new_text)
+    if getLocalStorageItem("local_prelude") != jsNull:
+      let existing = getLocalStorageItem("local_prelude").to(cstring)
+      setLocalStorageItem("local_prelude", existing & "\n" & new_text)
+    else:
+      setLocalStorageItem("local_prelude", new_text)
+    PRELUDE_RATIO = compress_str("")
+    console.log("New prelude compression ratio of: " & $PRELUDE_RATIO)
 
   proc do_detect() {.exportc.} =
     let
@@ -159,3 +180,5 @@ when defined(js) and isMainModule:
       color = "rgba(0, 255, 0, " & $(s.round(3) * 10.0) & ")"
     document.getElementById("output_span").textContent = d.cstring & ", confidence score of: " & ($s.round(6)).cstring
     document.getElementById("output_span").style.backgroundColor = color.cstring
+  
+  #window.onload = on_load