from flask import Flask, render_template, request, redirect, url_for
import os,shutil
from database_tools_2 import *

app = Flask(__name__)

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/show_image', methods=['POST'])
def show_image():
    if request.method == 'POST':
        id = request.form['question_number'].zfill(6)
        mydb = connect(hostname = db_host, port = db_port, username=db_user, pwd=db_pwd, db = "tiku")
        mycursor = mydb.cursor()
        sql = "SELECT content FROM problems WHERE ID = %s;"
        val = (id,)
        mycursor.execute(sql,val)
        content = mycursor.fetchall()[0][0]
        mydb.close()
        latex_raw = ReadTextFile("模板文件/独立文件模板.txt")
        latexdata = StringSubstitute(r"<<待替换\d*>>",latex_raw,[content])
        makedir("临时文件/pics")
        currentdate = GetDate()
        currenttime = GetTime()
        SaveTextFile(latexdata,f"临时文件/pics/ID{id}-{currentdate}-{currenttime}.tex")
        os.system(f"xelatex -interaction=batchmode -output-directory=临时文件/pics ID{id}-{currentdate}-{currenttime}.tex")
        os.chdir("临时文件/pics")
        os.system(f"pdftocairo -png -r 600 ID{id}-{currentdate}-{currenttime}.pdf")
        os.chdir("../..")
        shutil.copy(f"临时文件/pics/ID{id}-{currentdate}-{currenttime}-1.png",f"static/{id}.png")
        
        return render_template('show_image.html', image_path=f'/static/{id}.png')

@app.route('/submit_remarks', methods=['POST'])
def submit_remarks():
    category = request.form['category']
    remarks = request.form['remarks']
    return render_template('show_remarks.html', category=category, remarks=remarks)

if __name__ == '__main__':
    app.run(debug=True)