!7

set flag DynModule. // for transpilation

//set flag dm_evalJava_withModule_debug.

//set flag veryQuickJava3_debug.

// store bot data per conversation

concept Conversation {

  S cookie;

  S dataStruct;

}

cmodule2 GazelleMultiBot > DynGazelleBot {

  switchable int maxEvalResultLength = oneMegabyte_int();

  switchable double evalTimeout = 30.0;

  switchable long botProcessed; // timestamp of last post processed by bots

  switchable int maxBotAnswerLength = 100000;

  transient new L<Bot> bots;

  Map<Long, GazellePost> allPosts = syncTreeMap();

  transient Map<Long, O> loadedCodePosts = syncTreeMap();

  transient new O couldntLoadCode;

  transient Lock codeLoadLock = lock();

  set flag NoNanoHTTPD.

  !include #1029545 // API for Eleu

  class Bot {

    S name;

    *() {}

    *(S *name) {}

    *(S *name, IVF1<GazellePost> *handlePost) {}

    swappable void handlePost(GazellePost post) {}

    GazelleBotCred cred() { ret GazelleBotCred(_user, _botToken, name); }

    void postReply(GazellePost post, S text, S type, S title default null) {

      if (empty(text) && empty(title))

        text = "<no output>";

      gazelle_createPost(cred(), text, type, refs := post.id, +title);

    }

  }

  srecord CreatePost(L params) {}

  start {

    dm_useLocalMechListCopies();

    dbIndexing(Conversation, "cookie");

    grabLoop.handlePosts = posts -> {

      dm_mediumRefreshTranspiler();

      grabLoop.handlePosts_base(posts);

      for (GazellePost post : posts)

        setField(botProcessed := max(botProcessed, post.modified));

    };

    // legacy conversion to sort allPosts

    setField_noCheck(allPosts := asSyncTreeMap(allPosts));

    bots.add(new Bot("Math Bot", post -> {

      if (post.creating) ret;

      gazelle_mathBot1_handlePost_2(_user, _botToken, post);

    }));

    bots.add(new Bot("Code Safety Checker") {

      void handlePost(GazellePost post) {

        if (post.creating) ret;

        if (post.isJavaXCode())

          gazelle_createPost(cred(), codeSafetyCheckResult(post.text), "Code Safety", refs := post.id);

      }

    });

    bots.add(new Bot("Safe Code Runner") {

      void handlePost(GazellePost post) {

        if (post.creating) ret;

        if (post.isJavaXCode()) {

          S code = post.text;

          if (isCodeSafe(code)) {

            code = prepareCode(code, post);

            //S out = shorten(maxEvalResultLength, runCode(code));

            S text, type = "Code Result", title = "";

            try {

              O result = evalCode(code, post);

              if (result cast CreatePost) {

                O[] params = toObjectArray(result.params);

                text = (S) optPar text(params);

                type = (S) optPar type(params, type);

                title = (S) optPar title(params);

              } else

                text = str_shortenSyntheticAndStandardToString(result);

            } catch print e {

              text = getStackTrace(e);

            }

            if (empty(text) && empty(title))

              text = "<no output>";

            gazelle_createPost(cred(), text, type, +title, refs := post.id);

          }

        }

      }

    });

    bots.add(new Bot("Run Code On All Posts") {

      void handlePost(GazellePost post) {

        if (post.creating) ret;

        if (eqic(post.type, "Instruction") && match("Please run this code on all posts", post.text)) {

          long ref = gazelle_firstPostRef(post.id);

          if (ref == 0) ret;

          S code = gazelle_text(ref);

          if (!isCodeSafe(code)) ret;

          S code2 = "ret func(S post) { " + code + " };";

          O function = evalCode(code2);

          new LS lines;

          S out = shorten(maxEvalResultLength, runCode(code));

          for (GazellePost post2 : cloneValues(allPosts)) {

            lines.add("Post " + post2.id + " (" + quote(shorten(20, post2.text)) + "): " + shorten(80, runFunc(() -> callF(function, post2.text))));

          }

          gazelle_createPost(cred(), lines(lines), "Code Result", refs := post.id);

        }

      }

    });

    bots.add(new Bot("Mark identifiers safe") {

      void handlePost(GazellePost post) {

        if (post.creating) ret;

        if (/*eqic(post.type, "Instruction")

          &&*/ post.creator.isMaster

          && match("Mark safe", post.text)) {

          S text = getPost(first(post.postRefs)).text;

          LS ids = tok_identifiersInOrder(regexpFirstGroupIC("Unknown identifiers: (.+)", text));

          print("Marking safe: " + ids);

          postReply(post, markSafe(ids), "Marked safe");

        }

      }

    });

    bots.add(new Bot("Post Deleter") {

      void handlePost(GazellePost post) {

        if (post.creating) ret;

        if (/*eqic(post.type, "Instruction")

          &&*/ post.creator.isMaster

          && match("Delete posts", post.text)) {

            long ref = gazelle_firstPostRef(post.id);

            if (ref == 0) ret;

            S text = gazelle_text(ref);

            L<Long> postIDs = allToLong(regexpAllFirstGroups(gazelle_deletePostRegexp(), text));

            print("Deleting posts: " + postIDs);

            if (nempty(postIDs)) {

              Map result = gazelle_deletePosts(cred(), postIDs);

              postReply(post, str(result), "Deletion result");

            } else

              postReply(post, "No mentioned posts found", "Deletion result");

        }

      }

    });

    bots.add(new Bot("Detector Runner") {

      void handlePost(GazellePost post) {

        if (post.creating) ret;

        ret unless eqic(post.type, "Instruction")

          && match("Please run detector", post.text);

        try {

          long detectorID = post.refWithTagOrFail("detector");

          long posExamplesID = post.refWithTagOrFail("positive examples");

          long negExamplesID = post.refWithTagOrFail("negative examples");

          S code = getPost(detectorID).text;

          LS posExamples = tlft(getPost(posExamplesID).text);

          LS negExamples = tlft(getPost(negExamplesID).text);

          LPair<S, Bool> examples = trueFalseBPairs(posExamples, negExamples);

          if (!isCodeSafe(code)) fail("Detector code not safe");

          IF1<S, O> detector = proxy IF1(evalCode(code));

          new LS good;

          new LS bad;

          new Scorer scorer;

          long time = sysNow();

          evalWithTimeoutOrFail(evalTimeout, r {

            for (Pair<S, Bool> example : examples) {

              S result = runFunc(() -> detector.get(example.a));

              bool ok = eq(result, str(example.b));

              scorer.add(ok);

              S line = (ok ? "OK" : example.b ? "False negative" : "False positive")

                  + " (" + shorten(10, result) + "): " + example.a;

              (ok ? good : bad).add(line);

            }

          });            

          time = sysNow()-time;

          S text = "Detector code:\n\n" + indentx(code) + "\n\n"

            + n2(good, "correct answer") + ", " + n2(bad, "bad answer") + ". Runtime: " + n2(time) + " ms\n\n"

            + or2(trim(lines(concatLists(bad, ll(""), good))), "No errors");

          S title = "Score for detector " + detectorID + ": " + scorer;

          gazelle_createPost(cred(), text, "Detector Score", +title,

            refs := joinWithSpace(ll(post.id, detectorID, posExamplesID, negExamplesID)),

            refTags := linesLL_rtrim("", "detector", "positive examples", "negative examples"));

        } catch e {

          postReply(post, getStackTrace(e), "Error");

        }

      }

    });

  }

  void handlePost(GazellePost post) {

    allPosts.put(post.id, post);

    change();

    loadedCodePosts.remove(post.id);

    if (post.modified > botProcessed) {

      print("modified: " + post.modified + "/" + botProcessed);

      for (Bot bot : bots) pcall {

        bot.handlePost(post);

      }

    }

  }

  // if post != null, store transpilation

  O evalCode(S code, GazellePost post default null) {

    printWithIndent("CODE> ", code);

    veryQuickJava_transpiled.set(post != null ? "" : null); // request transpilation

    try {

      ret dm_javaEvalWithTimeout(evalTimeout, code);

    } finally {

      if (post != null) {

        S java = veryQuickJava_transpiled!;

        print("Transpilation for " + post.id + ": " + shorten(java));

        saveTextFile(transpilationFile(post.id), nullOnEmpty(java));

      }

    }

  }

  // assumes code is safety-checked

  S runCode(S code) {

    printWithIndent("CODE> ", code);

    ret runFunc(() -> str_shortenSyntheticAndStandardToString(dm_javaEval(code)));

  }

  // run IF0 with timeout, exception to string, convert result to string

  S runFunc(IF0 f) {

    ret str_shortenSyntheticAndStandardToString(evalWithTimeoutOrException(evalTimeout, func {

      try {

        ret str_shortenSyntheticAndStandardToString(f!);

      } catch e {

        ret getStackTrace(e);

      }

    }));

  }

  L<GazellePost> repliesTo(GazellePost post) {

    ret filter(values(allPosts), p -> contains(p.postRefs, post.id));

  }

  L<GazellePost> repliesWithTag(GazellePost post, S tag) {

    Pair<Long, S> pair = pair(post.id, upper(tag));

    ret filter(repliesTo(post), p -> contains(mapPairsB toUpper(p.taggedRefs()), pair));

  }

  GazellePost getPost(long id) {

    ret allPosts.get(id);

  }

  S getPostText(long id) {

    ret getPost(id).text;

  }

  Cl<GazellePost> getAllPosts() {

    ret values(allPosts);

  }

  CreatePost createPost(O... _) {

    ret new CreatePost(asList(_));

  }

  CodeSafetyChecker codeSafetyChecker() {

    new CodeSafetyChecker checker;

    checker.init();

    checker.markSafe("getAllPosts");

    ret checker;

  }

  S codeSafetyCheckResult(S code) {

    CodeSafetyChecker checker = codeSafetyChecker();

    checker.checkCode(code);

    ret checker.verbalCheckResult();

  }

  bool isCodeSafe(S code) {

    CodeSafetyChecker checker = codeSafetyChecker();

    checker.checkCode(code);

    ret checker.isSafe();

  }

  S prepareCode(S code, GazellePost post) {

    code = tok_addReturn(code);

    // define implicit vars and functions

    // post = text of parent post

    if (containsJavaToken(code, "post")) {

      long ref = gazelle_firstPostRef(post.id);

      if (ref != 0)

        code = "S post = " + quote(gazelle_text(ref)) + ";\n" + code;

    }

    // post = text of grandparent post

    if (containsJavaToken(code, "post2")) {

      long ref = gazelle_firstPostRef(gazelle_firstPostRef(post.id));

      if (ref != 0)

        code = "S post2 = " + quote(gazelle_text(ref)) + ";\n" + code;

    }

    if (containsJavaToken(code, "getAllPosts"))

      code = [[

        embedded Cl<GazellePost> getAllPosts() {

          ret (Cl) quickImport(dm_call(dm_current_generic(), "getAllPosts"));

        }

      ]] + code;

    if (containsJavaToken(code, "createPost"))

      code = [[

        embedded O createPost(O... _) {

          ret dm_call(dm_current_generic(), "createPost", _);

        }

      ]] + code;

    // optimize gazelle_text

    if (containsJavaToken(code, "gazelle_text")) {

      code = [[

        embedded S gazelle_text(long id) {

          ret (S) dm_call(dm_current_generic(), "getPostText", id);

        }

      ]] + code;

    }

    ret code;

  }

  O html(IWebRequest req) {

    new Matches m;

    if (eqic(req.uri(), "/favicon.ico"))

      ret serveFile(loadLibrary(#1400439), faviconMimeType());

    if (startsWith(req.uri(), "/chatBotReply/", m) && isInteger(m.rest())) {

      req.noSpam();

      long postID = parseLong(m.rest());

      GazellePost post = getPost(postID);

      if (post == null) ret serve404("Post " + postID + " not found");

      O code = codeForPost(post);

      if (code == couldntLoadCode) ret withHeader(serve500("Couldn't load code for post"));

      S q = req.params().get("q"); // user input

      S cookie = req.params().get("cookie");

      if (empty(q)) ret withHeader(serveText(""));

      S answer;

      if (implementsInterfaceShortNamed IF1(code)) // stateless bot

        answer = evalWithTimeoutOrFail(evalTimeout, () -> strOrEmpty(callF(code, q)));

      else {

        print("Stateful bot. cookie: " + cookie);

        if (empty(cookie)) ret withHeader(serve500("Need cookie for stateful bot"));

        Conversation conv = uniq(Conversation, +cookie);

        O instance = code;

        if (instance == null) ret withHeader(serve500("No bot instance"));

        print("Stateful bot instance: " + instance);

        if (nempty(conv.dataStruct)) {

          O data = unstructureInRealm(conv.dataStruct, instance); // hopefully this is safe

          print("Unstructured: " + data);

          copyAllThisDollarFields(instance, data); // probably not needed anymore

          instance = data;

        }

        O _instance = instance;

        answer = evalWithTimeoutOrFail(evalTimeout, () -> strOrEmpty(call(_instance, "answer", q)));

        cset(conv, dataStruct := structure(instance));

        print("Structured: " + conv.dataStruct);

      }

      ret withHeader(serveJSON(litorderedmap(answer := shorten(maxBotAnswerLength, answer))));

    }

    if (startsWith(req.uri(), "/transpilation/", m) && isInteger(m.rest())) {

      long postID = parseLong(m.rest());

      GazellePost post = getPost(postID);

      if (post == null) ret serve404("Post " + postID + " not found");

      S src = loadTextFile(transpilationFile(post.id));

      if (empty(src))

        src = "No transpilation found for post " + postID + "." + 

          (!post.isJavaXCode() ? " Code is not a code post." : " Please try \"Touch post\" and wait a few seconds");

      else pcall {

        src = javaPrettyPrint(src);

      }

      ret serveText(src);

    }

    ret "Bot here";

  }

  O codeForPost(GazellePost post) {

    lock codeLoadLock;

    O code = loadedCodePosts.get(post.id);

    if (code == null) {

      try {

        S codeText = post.text;

        if (!isCodeSafe(codeText)) fail("Code is not safe: " + codeSafetyCheckResult(codeText));

        codeText = prepareCode(codeText, null);

        code = evalCode(codeText, post);

      } catch print e {

        code = couldntLoadCode;

      }

      loadedCodePosts.put(post.id, code);

    }

    ret code;

  }

  File transpilationFile(long postID) {

    ret programFile("Post-Transpilations/" + postID + ".java");

  }

  O withHeader(O response) {

    call(response, 'addHeader, "Access-Control-Allow-Origin", "*");

    ret response;

  }

}