#!/usr/bin/env python3

""" Display previously saved issues from a database on webpage via CGI.

author: Sascha L. Teichmann <sascha.teichmann@intevation.de>
author: Bernhard Reiter <bernhard@intevation.de>
author: Sean Engelhardt <sean.engelhardt@intevation.de>

(c) 2010,2015 by Intevation GmbH

This is Free Software unter the terms of the
GNU GENERAL PUBLIC LICENSE Version 3 or later.
See http://www.gnu.org/licenses/gpl-3.0.txt for details


##Usage Example: ##
see display_issues_demo.py or __main__ section below.
"""

import sqlite3 as db
import cgitb
import roundup_content_data as rcd
import os


def make_js_object_string(array):
    formated = []

    for item in array:
        formated.append("{points: " + str(item) + "}")

    return ",".join(formated)


def make_js_object_date(array):
    formated = []

    for item in array:
        formated.append("{date : new Date('" + str(item) + "')}")

    return ", ".join(formated)

def get_webpage(graph=None):

    if graph is None:
        graph = os.path.dirname(os.path.realpath(__file__)) + '/graph.html'

    with open(graph, "r") as html_chart_file:
        base_html_data = html_chart_file.read()

    base_html_data = (base_html_data
        .replace("var critical=[];", "var critical=[" + make_js_object_string(rcd.data_dict["critical"]) + "]")
        .replace("var urgent=[];", "var urgent=[" + make_js_object_string(rcd.data_dict["urgent"]) + "]")
        .replace("var bug=[];", "var bug=[" + make_js_object_string(rcd.data_dict["bug"]) + "]")
        .replace("var feature=[];", "var feature=[" + make_js_object_string(rcd.data_dict["feature"]) + "]")
        .replace("var wish=[];", "var wish=[" + make_js_object_string(rcd.data_dict["wish"]) + "]")
        .replace("var timestamp=[];", "var timestamp=[" + make_js_object_date(rcd.data_dict["date"]) + "]"))

    return base_html_data

def compile_db_stats_html(db_file, sql_select, graph=None):

    con = None
    cur = None

    try:
        con = db.connect(db_file)
        cur = con.cursor()
        cur.execute(sql_select)

        for row in cur.fetchall():
            rcd.data_dict["date"].append(row[0])
            rcd.data_dict["critical"].append(row[1])
            rcd.data_dict["urgent"].append(row[2])
            rcd.data_dict["bug"].append(row[3])
            rcd.data_dict["feature"].append(row[4])
            rcd.data_dict["wish"].append(row[5])
    finally:
        if cur:
            cur.close()
        if con:
            con.close()

    return get_webpage(graph)

def render_webpage(content):
    for line in content.split("\n"):
        print(line)

def render_db_stats_as_html(db_file, sql_select):
    render_webpage(compile_db_stats_html(db_file, sql_select))

if __name__ == '__main__':
    cgitb.enable()
    #spit out HTML file directly, thus no need to give headers to the server
    #print("Content-Type: text/html")
    #print()

    render_db_stats_as_html(rcd.DATABASE_DEMO, rcd.SELECT_ALL)