main.py

import json
import uuid
import os
import pathlib
from uuid import uuid4
from datetime import datetime
import dataclasses

from fasthtml.common import *
from fastcore.all import typedispatch
from sqlite_minutils.db import Database
from huggingface_hub import CommitScheduler

import eval_code
import storage

# the secrets. Will be loaded from HF, or for docker --env-file or from IDE

OAUTH_CLIENT_ID = os.environ.get('OAUTH_CLIENT_ID')
OAUTH_SCOPES = os.environ.get('OAUTH_SCOPES')
OAUTH_CLIENT_SECRET = os.environ.get('OAUTH_CLIENT_SECRET')
OPENID_PROVIDER_URL = os.environ.get('OPENID_PROVIDER_URL')
SPACE_HOST = os.environ.get('SPACE_HOST')
HF_DATASET_AUTH_TOKEN = os.environ.get('HF_DATASET_AUTH_TOKEN', "none")

assert HF_DATASET_AUTH_TOKEN != "none", "Please set the corrent ENV variables!!!"

LOCAL_STORAGE_PATH = ""

FILE_EVENTS = f"events-{datetime.utcnow()}-{uuid4()}.json"

if "localhost" in SPACE_HOST:
    DATABASE_NAME = "data/sessions_meta.db"
    LOCAL_STORAGE_PATH = Path("data/persistent/")
    pathlib.Path(DATABASE_NAME).unlink(missing_ok=True)
else:
    DATABASE_NAME = "/tmp/cache/sessions_meta.db"
    LOCAL_STORAGE_PATH = Path("/tmp/cache/persistent")


LOCAL_STORAGE_PATH.mkdir(exist_ok=True, parents=True)
EVENTS_FILE_PATH = LOCAL_STORAGE_PATH / FILE_EVENTS


scheduler = None

# scheduler = CommitScheduler(
#     repo_id="ml-visoft/c-reviewer",
#     repo_type="dataset",
#     folder_path=LOCAL_STORAGE_PATH,
#     every=100,
#     path_in_repo="raw_data",
#     token=HF_DATASET_AUTH_TOKEN,
#     allow_patterns=".jslines",
#     squash_history=False
# )



global_database = Database(DATABASE_NAME)
global_database_tables = global_database.t

# We store session specific feedback from registered users.
# Will be later used to submit/storage the answer.
question_evaluation_table = global_database_tables.question_answer
if question_evaluation_table not in global_database_tables:
    question_evaluation_table.create(id=int, code_text=str,
                                     answer_eval_text=str, submitted=int, pk='id')
Question_Evaluation_cls = question_evaluation_table.dataclass()

# We store real-time session IDs and the state of the questions. Will link to question_answer
session_state_table = global_database_tables.session_state
if session_state_table not in global_database_tables:
    # session_id stored in cookies
    # see EVAL_STATUS_x below for state
    session_state_table.create(id=int, session_id=str, state=int, submitted=datetime,
                               completed=datetime, current_qeval=int, pk='id',)
                               # Can't really nail the fk specs
                               # foreign_keys=[("current_qeval", question_evaluation_table, "id")])
Session_State_cls = session_state_table.dataclass()



EVAL_STATE_NEW=0
EVAL_STATE_QUERY=1
EVAL_STATE_TIMEDOUT=2
EVAL_STATE_ANSWER=3
EVAL_STATE_ERROR=4

# Constants to name the various HTML ids in the code
HTML_SUBMIT_CODE_AREA = "submit_code_area"
HTML_RESULTS_AREA = "prompt_response"
HTML_CLEAR_FORM = "clear_the_form"
HTML_SUBMIT_FEEDBACK = "submit_feedback"

hdrs = (HighlightJS(langs=['python', 'javascript', 'html', 'css']),)

if "localhost" in SPACE_HOST:
    # Are we hacking locally?
    print("Localhost detected in SPACE_HOST. App started in debug+live mode!")
    app, rt = fast_app(debug=True, live=True, hdrs=hdrs)
    REFRESH_TIME = 0.1
else:
    app, rt = fast_app(debug=False, live=False, hdrs=hdrs)
    REFRESH_TIME = 1

################# STORAGE

def untyped_save_to_storage(dc, filename):
    if scheduler is None: return
    with scheduler.lock:
        js_str = json.dumps(dataclasses.asdict(dc)) + "\n"
        with open(filename, "a") as f:
            f.write(js_str)


@typedispatch
def save_to_storage(nav_event:storage.NavigationEvent):
    untyped_save_to_storage(nav_event, EVENTS_FILE_PATH)



def validate_and_get_question_evaluation_objectid(session, qe_id:int):
    if 'session_id' not in session:
        print("validate_and_get_question_evaluation_objectid bad session data")
        return None
    session_id = session["session_id"]
    state_rows = session_state_table(limit=1, where=f"session_id == '{session_id}'", order_by="id DESC")
    if len(state_rows) <= 0:
        print("validate_and_get_question_evaluation_objectid there is no state")
        return False, None
    answer_id = state_rows[0].current_qeval
    qa_obj_row = question_evaluation_table(limit=1, where=f"id == {answer_id}")
    if len(qa_obj_row) <= 0:
        print("validate_and_get_question_evaluation_objectid There is no answer recorded")
        return False, None
    qe_obj = qa_obj_row[0]
    if qe_id != qe_obj.id:
        print("validate_and_get_question_evaluation_objectid QE {qe_id} does not belong to {qe_obj.id}")
        return False, None
    return True, qe_obj


def html_create_feedback_updown_button(qe_id, ans_id, selected=0, disabled=False):
    html_target_id = f"buttons_{ans_id}"
    colors = ["grey", "blue"]
    up_col = colors[0]
    down_col = colors[0]
    if selected == 1: up_col = colors[1]
    if selected == -1: down_col = colors[1]
    toggle_url = f"/toggle_up_down/{qe_id}/{ans_id}/"
    up = Button("+", hx_put=f"{toggle_url}?which=1", disabled=disabled, hx_swap="outerHTML",
                hx_target="#" + html_target_id, style=f"background-color:{up_col}")
    down = Button("-", hx_put=f"{toggle_url}?which=-1", disabled=disabled, hx_swap="outerHTML",
                  hx_target="#" + html_target_id, style=f"background-color:{down_col}")
    button_row = Div(up, down, _id=html_target_id)
    return button_row


def html_augment_evaluation_text_with_feedback(eval_html, qe_id, ans_id, selected=0):
    """
    Will plot the + / - buttons for feedback.

    :param eval_html:
    :param qe_id:
    :param ans_id:
    :return:
    """

    buttons = html_create_feedback_updown_button(qe_id, ans_id, selected)
    final_div = Div(eval_html, buttons, style=" background-color: #f0f0f0;")
    return final_div


@rt("/toggle_up_down/{qe_id}/{ans_id}")
def put(session, qe_id:int, ans_id:int, which:int):
    """
    Answer to the +/- button presses

    :param session:
    :param qe_id:
    :param ans_id:
    :param which:
    :return:
    """
    print(qe_id, ans_id, which)
    if which not in {-1, 1}:
        print(f"The {which=} is bad")
        return None

    # if 'session_id' not in session:
    #     print("toggle_up_down bad session data")
    #     return None
    # session_id = session["session_id"]
    # state_rows = session_state_table(limit=1, where=f"session_id == '{session_id}'", order_by="id DESC")
    # if len(state_rows) <= 0:
    #     return None
    # answer_id = state_rows[0].current_qeval
    # qa_obj_row = question_evaluation_table(limit=1, where=f"id == {answer_id}")
    # if len(qa_obj_row) <= 0:
    #     return None
    # qe_obj = qa_obj_row[0]
    # if qe_id != qe_obj.id:
    #     print(f"QE {qe_id} does not belong to {qe_obj.id}")
    #     return None

    is_ok, qe_obj = validate_and_get_question_evaluation_objectid(session, qe_id)
    if not is_ok:
        print("toggle_up_down made session/object error")
        return "Error"

    # save_to_storage(
    #     storage.NavigationEvent(event_type="/", event_session_id=session_id, event_params={"qe_id":qe_id})
    # )

    answer_eval_js = json.loads(qe_obj.answer_eval_text)
    crt_selection = answer_eval_js[ans_id]["EVAL"]
    input_button = which
    out_selection = (input_button if crt_selection == 0 else (0 if crt_selection == input_button else input_button))
    print(f"out selection: {out_selection}")
    # store it back in DB
    answer_eval_js[ans_id]["EVAL"] = out_selection
    qe_obj.answer_eval_text = answer_eval_js
    qe_obj.submitted = False # mark object as dirty
    question_evaluation_table.upsert(qe_obj)

    buttons= html_create_feedback_updown_button(qe_id, ans_id, selected=out_selection)
    return buttons


def html_get_textual_feedback_form(qe_obj, thank=False):
    if thank:
        ph = "Thank you!"
    else:
        ph = "Write your general feedback here"
    form = Form(Input(name="freeform_feedback", placeholder=ph),
                Button("Submit", disabled=(qe_obj.submitted == 1)), hx_post=f"/submit_feedback/{qe_obj.id}",
                hx_target="#" + HTML_SUBMIT_FEEDBACK, hx_swap="outerHTML",)
    div = Div(P("Give us a general feedback for the evaluation (optional)"), form, id=HTML_SUBMIT_FEEDBACK)
    return div

@rt("/submit_feedback/{qe_id}")
def post(session, qe_id:int, freeform_feedback:str):
    # Update the object
    # session_id = session.get("session_id", "Not set")
    # save_to_storage(
    #     storage.NavigationEvent(event_type="/submit_feedback", event_session_id=session_id,
    #                             event_params={"qe_id":qe_id})
    # )
    is_ok, qe_obj = validate_and_get_question_evaluation_objectid(session, qe_id)
    if not is_ok:
        print("submit_feedback made session/object error")
        return "Error"

    answer_eval_js = json.loads(qe_obj.answer_eval_text)
    answer_eval_js[0]["explanation"] = freeform_feedback
    qe_obj.submitted = True
    question_evaluation_table.upsert(qe_obj)
    return html_get_textual_feedback_form(qe_obj, thank=True)

def html_format_code_review_form(qe_obj, html_id=""):
    """
    Formats the code review, adding fields for feedback if it is required.


    :param feedback_js:
    :param c_code:
    :param html_id:
    :return:
    """
    c_code = qe_obj.code_text
    enhanced_answer = json.loads(qe_obj.answer_eval_text)
    list_of_citerias = []
    for caug_code, caug_txt in eval_code.CODE_AUGMENTATIONS:
        crit_tag = [H3(caug_code), P(caug_txt)]
        list_of_citerias.extend(crit_tag)
        # yeah, I know . . .
        for k, eval_line in enumerate(enhanced_answer):
            if caug_code == eval_line["criteria"]:
                eval_txt = P(eval_line["explanation"])
                eval_txt_fb = html_augment_evaluation_text_with_feedback(eval_txt, qe_obj.id, k)
                list_of_citerias.append(eval_txt_fb)
    textual_feedback = html_get_textual_feedback_form(qe_obj)
    return Div(html_render_code_output(c_code), *list_of_citerias, textual_feedback, _id=html_id)

def html_default_results(html_id):
    return Div(P("This is where criterias will show up once the code is evaluated"), _id=html_id)

def html_waiting_for_results(html_id):
    return Div(P("Working  . . ."), _id=html_id,
    hx_get=f"/render_answer",
    hx_trigger = f"every {REFRESH_TIME}s",
    hx_swap = "outerHTML",
    )

def get_latest_eval_request_status(session_id):
    state_rows = session_state_table(limit=1, where=f"session_id == '{session_id}'", order_by="id DESC")
    if len(state_rows) <= 0:
        return EVAL_STATE_NEW, None
    state_obj = state_rows[0]
    if state_obj.state in {EVAL_STATE_NEW, EVAL_STATE_QUERY, EVAL_STATE_ANSWER}:
        return  state_obj.state, state_obj
    return EVAL_STATE_ERROR, state_obj


def html_error_results(message, html_id):
    div = Div(P("There was an error:", P(message)), _id=html_id)
    return div

def html_render_answer_from_db(session_id, html_id):
    eval_request_status, state_obj = get_latest_eval_request_status(session_id)
    # state_rows = session_state_table(limit=1, where=f"session_id == '{session_id}'", order_by="id DESC")
    # print(eval_request_status, state_obj)
    if eval_request_status == EVAL_STATE_NEW:
        return html_default_results(html_id), #, html_render_inputbox(HTML_RESULTS_AREA, HTML_SUBMIT_CODE_AREA)
    if eval_request_status == EVAL_STATE_ANSWER:
        qe_obj_lst = question_evaluation_table(limit=1, where=f"id == {state_obj.current_qeval}")
        if len(qe_obj_lst) < 1:
            print(f"Object id {state_obj.current_qeval} can't be found in question_evaluation_table")
            return (None,)
        qe_obj = qe_obj_lst[0]
        return (html_format_code_review_form(qe_obj, html_id),
                html_render_inputbox(target_html_id=HTML_RESULTS_AREA, region_html_id=HTML_SUBMIT_CODE_AREA)) #, html_render_code_output(HTML_SUBMIT_CODE_AREA, state_obj.code)
    if eval_request_status == EVAL_STATE_QUERY:
        return html_waiting_for_results(html_id),
    return html_error_results(state_obj.answer, html_id), #, html_render_code_output(HTML_SUBMIT_CODE_AREA, state_obj.code)


# How can I timeout? Well ... TBD.
@threaded
def call_gpt_and_store_result(session_obj_id, code_to_check):
    """
    Threaded function that will submit code to LLM and wait for the answer.

    Communication with "main" thread is through db.

    All parameters must be pickable.

    :param session_obj_id:
    :param code_to_check:
    :return:
    """
    # TODO refactor considering new join!
    # print("evaluatign code")
    try:
        # Pesky way to get a new cursor, in a thread safe way, into the db. This code runs in another thread.
        # Can we do better?
        local_database = Database(DATABASE_NAME)
        local_sess_state = local_database.t.session_state
        local_sess_state_cls = local_sess_state.dataclass()
        local_sess_obj_lst = local_sess_state(limit=1, where=f"id == {session_obj_id}")
        local_sess_obj = local_sess_obj_lst[0]

        # Trigger the lenghtly operation
        enhanced_answer = eval_code.eval_the_piece_of_c_code(openai_client=None, ccode=code_to_check)

        # we create a new QA entry.
        qa_obj = Question_Evaluation_cls(code_text=code_to_check, answer_eval_text=enhanced_answer, submitted=0)
        qa_obj = question_evaluation_table.insert(qa_obj)
        local_sess_obj.current_qeval = qa_obj.id

        # TODO save the outcome in a table, where it will be backed-up later. SqlLite is volatile.

        if "error" in enhanced_answer:
            local_sess_obj.state = EVAL_STATE_ERROR
            local_sess_obj.answer = enhanced_answer["error"]
            local_sess_obj.completed = datetime.utcnow()
        else:
            local_sess_obj.state = EVAL_STATE_ANSWER
            local_sess_obj.completed = datetime.utcnow()
        local_sess_state.update(local_sess_obj)
    except:
        import traceback
        traceback.print_exc()


def html_render_inputbox(target_html_id, region_html_id):
    txtarea = Textarea(id="ccodetoeval", name="ccodetoeval", placeholder="Enter a piece of C code", rows=3)
    form = Form(Group(txtarea, Button("Evaluate")),
                hx_post="/submit_to_eval",
                hx_swap="outerHTML",
                target_id=target_html_id
                )
    return Div(form, _id=region_html_id, hx_swap_oob='true')

def html_render_code_output(code):
    txtarea = Pre(Code(code))
    return txtarea


def render_conditional_inputbox_results(session_id):
    eval_request_status, _ = get_latest_eval_request_status(session_id)
    pass

def html_render_clear_area_button(html_id):
    button = Button("Clear form",
                    hx_get="/clear_area",
                    hx_swap="outerHTML",
                    target_id=HTML_RESULTS_AREA,
                    )
    div = Div(button, _id=html_id, hx_swap_oob='true')
    return div

def render_clear_area(session_id, html_id):
    # return html_render_clear_area_button(html_id)
    eval_request_status, _ = get_latest_eval_request_status(session_id)
    if eval_request_status != EVAL_STATE_NEW:
        # print("clear button: render button")
        return html_render_clear_area_button(html_id)
    else:
        # print("clear button: render empty")
        return Div(P(""), _id=html_id, hx_swap_oob='true')


@rt("/")
def get(session):
    print(session)
    if 'session_id' not in session:
        session['session_id'] = str(uuid.uuid4())
    session_id = session["session_id"]
    save_to_storage(
        storage.NavigationEvent(event_type="/", event_session_id=session_id)
    )
    title = Title('C code review for students')
    preamble = [H1("Evaluate your C code!"),
                P("Enter your code in the textbox below and wait for answers."),
                P("!! The data will be saved and maybe made public !!"),
                ]

#     ############
#     # !!! FOR DEBUGGING PURPOSES !!!
#
#     # insert an answer in db.
#     code = """
# #include <stdio.h>
# int main() {
#    // printf() displays the string inside quotation
#    printf("Hello, World!");
#    return 0;
# }
# """
#     answer = eval_code.eval_the_piece_of_c_code(None, None)
#     enhanced_answer = eval_code.add_evaluation_fields_on_js_answer(answer, CODE_AUGMENTATIONS)
#     session_obj = Session_State_cls(
#         session_id=session_id,
#         state=EVAL_STATE_ANSWER,
#         submitted=datetime.utcnow(),
#         completed=datetime.utcnow(),
#     )
#
#     # we create a new QA entry.
#     qa_obj = Question_Evaluation_cls(code_text=code,
#                                      answer_eval_text=enhanced_answer, submitted=0)
#     qa_obj = question_evaluation_table.insert(qa_obj)
#     session_obj.current_qeval = qa_obj.id
#     session_obj = session_state_table.insert(session_obj)
#
#     ############

    input_area = html_render_inputbox(target_html_id=HTML_RESULTS_AREA, region_html_id=HTML_SUBMIT_CODE_AREA)
    results_area = html_render_answer_from_db(session_id, HTML_RESULTS_AREA)
    clear_area = render_clear_area(session_id, HTML_CLEAR_FORM)
    return title, Main(*preamble, input_area, results_area, clear_area)

@rt("/render_answer")
def get(session):
    if 'session_id' not in session: return "render_answer No session ID"
    session_id = session["session_id"]
    answer_area = html_render_answer_from_db(session_id, HTML_RESULTS_AREA)
    return answer_area


@rt("/submit_to_eval", methods="post")
def post(session, ccodetoeval:str):
    print(session)
    if 'session_id' not in session:
        return P("submit_to_eval. Bad call. No session ID")
    session_id = session["session_id"]
    session_obj = Session_State_cls(
        session_id=session_id,
        state=EVAL_STATE_QUERY,
        submitted=datetime.utcnow(),
    )
    # we insert and we get the new primary key
    session_obj = session_state_table.insert(session_obj)
    # will be executed in another thread with magic @threaded
    call_gpt_and_store_result(session_obj.id, ccodetoeval)
    return (*html_render_answer_from_db(session_id, HTML_RESULTS_AREA),
            render_clear_area(session_id, HTML_CLEAR_FORM)
            )


@rt("/clear_area", methods="get")
def get(session):
    if 'session_id' not in session: return P("clear_area. Bad call. No session ID")
    session_id = session["session_id"]

    save_to_storage(
        storage.NavigationEvent(event_type="/clear_area", event_session_id=session_id)
    )

    # insert a row to "cancel"/reset the current request
    session_obj = Session_State_cls(
        session_id=session_id,
        state=EVAL_STATE_NEW,
        submitted=datetime.utcnow(),
    )
    session_state_table.insert(session_obj)
    # re-issue forms
    input_area = html_render_inputbox(target_html_id=HTML_RESULTS_AREA, region_html_id=HTML_SUBMIT_CODE_AREA)
    results_area = html_render_answer_from_db(session_id, HTML_RESULTS_AREA)
    clear_area = render_clear_area(session_id, HTML_CLEAR_FORM)
    print(results_area)
    return *results_area, input_area, clear_area


## This code is for reference, for OAuth. BIG PITA, will be added later.

#
# js_hf_imports = \
#     """
# {
#     "imports": {
#         "@huggingface/hub": "https://cdn.jsdelivr.net/npm/@huggingface/hub@0.13.0/+esm"
#     }
# }
# """
#
# js_block_hf_auth = \
#     """
# import { oauthLoginUrl, oauthHandleRedirectIfPresent } from "@huggingface/hub";
# console.log("huggingface env", window.huggingface);
# let oauthResult = localStorage.getItem("oauth");
# if (oauthResult) {
#   try {
#     oauthResult = JSON.parse(oauthResult);
#   } catch {
#     oauthResult = null;
#   }
# }
#
# oauthResult ||= await oauthHandleRedirectIfPresent();
# if (oauthResult) {
#   document.querySelector("pre").textContent = JSON.stringify(oauthResult, null, 2);
#   localStorage.setItem("oauth", JSON.stringify(oauthResult));
#   document.getElementById("signout").style.removeProperty("display");
#   document.getElementById("signout").onclick = async function() {
#     localStorage.removeItem("oauth");
#     window.location.href = window.location.href.replace(/\?.*$/, '');
#     window.location.reload();
#   }
# } else {
#   document.getElementById("signin").style.removeProperty("display");
#   document.getElementById("signin").onclick = async function() {
#     // prompt=consent to re-trigger the consent screen instead of silently redirecting
#     window.location.href = (await oauthLoginUrl({scopes: window.huggingface.variables.OAUTH_SCOPES})) + "&prompt=consent";
#   }
# }
# """
#
# js_block_hf_auth2 = \
#     """
# import { oauthLoginUrl, oauthHandleRedirectIfPresent } from "@huggingface/hub";
# let oauthResult = localStorage.getItem("oauth");
# if (oauthResult) {
#   try {
#     oauthResult = JSON.parse(oauthResult);
#   } catch {
#     oauthResult = null;
#   }
# }
#
# console.log("OAuth result", oauthResult);
# oauthResult ||= await oauthHandleRedirectIfPresent();
#
# if (oauthResult) {
#   document.querySelector("pre").textContent = JSON.stringify(oauthResult, null, 2);
#   localStorage.setItem("oauth", JSON.stringify(oauthResult));
#   console.log("There is an oauth result", oauthResult);
#   document.getElementById("signout").style.removeProperty("display");
#   document.getElementById("signout").onclick = async function() {
#     localStorage.removeItem("oauth");
#     window.location.href = window.location.href.replace(/\?.*$/, '');
#     window.location.reload();
#   }
#
# } else {
#     console.log("No OAuth result. Setting the loging button event");
#     document.getElementById("signin").style.removeProperty("display");
#     document.getElementById("signin").onclick = async function() {
#     // prompt=consent to re-trigger the consent screen instead of silently redirecting
#     window.location.href = window.hf_redirect_url;
#   }
# }
# """
#
#
# def get_hf_user_data():
#     pass


# @rt('/', methods="get")
# def get():
#     global SPACE_HOST
#     if "localhost" in SPACE_HOST:
#         space_host = f"htpp://{SPACE_HOST}/"
#     else:
#         space_host = f"https://{SPACE_HOST}/"
#     hf_redirect_url_func = (
#         f"import {{ oauthLoginUrl, }} from '@huggingface/hub'; \n"
#         f"window.hf_redirect_url = await oauthLoginUrl({{clientId:'{OAUTH_CLIENT_ID}',redirectUrl:'{space_host}',"
#         f"scopes:'{OAUTH_SCOPES}'}}) + '&prompt=consent';\n"
#         f"console.log(window.hf_redirect_url);")
#
#     header = Head(Title("C code reviewing"),
#                   Script(src="https://unpkg.com/es-module-shims@1.7.0/dist/es-module-shims.js"),
#                   Script(js_hf_imports, type="importmap"),
#                   )
#     content = Body(Div(P("Some content!")),
#                    A(f"Space host: {space_host}", href=space_host),
#                    Pre(""),
#                    Script(hf_redirect_url_func, type="module"),
#                    Img(src="https://huggingface.co/datasets/huggingface/badges/resolve/main/sign-in-with-huggingface-xl-dark.svg",
#                        alt="Sign in with Hugging Face",
#                        style="cursor: pointer; display: none;",
#                        _id="signin", name=None),
#                    Button("Sign out", _id="signout", style="display: none", name=None),
#                    A("Authenticate!", href="authorized"),
#                    Script(js_block_hf_auth2, type="module"))
#     full_page = Html(header, content)
#     return full_page


# @rt('/change')
# def get(): return P('Nice to be here!')


# @rt('/authorized', methods="get")
# def authorized():
#     content = Body(P("Do we have authenticated user?"))
#     return content


serve()