from flask import Flask, render_template, jsonify, request, g
import os, csv, yaml
import datetime
import psycopg2
import pdb

app = Flask(__name__)

basedir = "/home/share/CorpCDOs"

def get_attach_from_name(index_type, series):
    if index_type.lower() == "ig":
        if series == 9:
            attach = [0, 3, 7, 10, 15, 30, 100]
        else:
            attach = [0, 3, 7, 15, 100]
    elif index_type.lower() == "hy":
        attach = [0, 15, 25, 35, 100]
    return attach

def get_db():
    db = getattr(g, '_database', None)
    if db is None:
        db = g._database = psycopg2.connect(database="serenitasdb",
                                            user="serenitas_user",
                                            password="Serenitas1",
                                            host="debian")
    return db

@app.teardown_appcontext
def close_connection(exception):
    db = getattr(g, '_database', None)
    if db is not None:
        db.close()

@app.route("/_data")
def get_risk_number():
    index = request.args.get("i")
    series = request.args.get("s", 0, int)
    tenor = request.args.get("t")
    greek = request.args.get("g")
    data = []
    db = get_db()
    attach = get_attach_from_name(index, series)
    sqlstr = "SELECT date, \"{0}\" from risk_numbers WHERE index=%s and series=%s" \
                  " and tenor=%s ORDER BY date".format(greek)
    with db.cursor() as c:
        c.execute(sqlstr, (index.upper(), series, tenor))
        data = [["%s/%s/%s" % (date.year, date.month, date.day)] + val for date, val in c]
    return jsonify(labels=["Date"] + ["{0}-{1} {2}".format(l, u, greek) for l, u in zip(attach[:-1], attach[1:])],
                   data=data)

@app.route("/")
def main():
    with open(os.path.join(basedir, "code", "etc", "runs.yml")) as fh:
        runs = yaml.load(fh)
    series_list = sorted(list(set([int(name[2:]) for name in runs['name']])))
    return render_template("index.html", series=series_list)

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