#!/usr/bin/env python3

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

import sys
import os
try:
    sys.path.append(os.path.dirname(os.path.realpath(__file__)))
except:
    pass

import tempfile
import requests
import re
import api
from config import *
from termcolors import *
from getpass import getpass


editor = "/usr/bin/editor"

notes = {}


def firstsetup(url="", username=""):
    # Get URL
    while True:
        if url != "":
            url = input("Server URL (" + url + "): ") or url
        else:
            url = input("Server URL: ")
        if re.compile("^(https?|ftp)://[^\s/$.?#].[^\s]*$").match(url):
            break
        else:
            print("That doesn't look right, try again.")
    # Get username
    while True:
        if username != "":
            username = input("Username (" + username + "): ") or username
        else:
            username = input("Username: ")
        if username != "":
            break
    # Get password
    while True:
        password = getpass("Password: ")
        if password != "":
            break

    try:
        r = requests.post(url + "/api/ping", auth=(username, password))
    except:
        print("Could not connect to the server.  Try again.")
        firstsetup()
        return

    if r.status_code == 401:
        print("Login incorrect, try again.")
        firstsetup(url)
        return

    try:
        resp = r.json()
        if resp["status"] == "ERROR":
            print(resp["msg"])
            firstsetup(url, username)
            return
        config["url"] = url
        config["username"] = username
        config["password"] = password
        saveconfig()
        return
    except ValueError:
        print("Login incorrect, try again.")
        firstsetup(url, username)
        return


def loadnotes():
    global notes
    notes = api.do("getnotes")["notes"]


def savenote(note):
    api.do("savenote", {
        "id": note["noteid"],
        "text": note["content"]
    })


def editnote(note):
    global editor
    content = note["content"]
    f = tempfile.NamedTemporaryFile(mode='w+')
    f.write(content)
    f.flush()
    command = editor + " " + f.name
    status = os.system(command)
    f.seek(0, 0)
    text = f.read()
    f.close()
    assert not os.path.exists(f.name)
    note["content"] = text
    clearscreen()
    print("Saving...")
    savenote(note)
    print("Note saved!")


def editmenu():
    global notes
    rows, columns = os.popen('stty size', 'r').read().split()
    linelength = int(columns) - 10
    clearscreen()
    loadnotes()
    i = 1
    notelist = {}
    for note in notes:
        notelist[str(i)] = note
        print(chr(27) + "[0m", end='')
        print("\n\nNote #" + str(i) + ":")
        setbghexcolor(note["color"])
        setfgbybghex(note["color"])
        linecount = 0
        for line in note["content"].splitlines():
            if linecount > 5:
                print("\n(" + str(len(note["content"].splitlines())) + " more lines" + ")", end='')
                break
            print("\n    " + line[0:linelength].ljust(linelength), end='')
            if len(line) > linelength:
                print("...", end='')
            linecount += 1
        i += 1
    resetcolor()
    print("\n======================")
    noteid = input("Note to edit (M for main menu): ")
    if noteid.upper() == "M":
        clearscreen()
        return
    try:
        editnote(notelist[noteid])
    except KeyError:
        print("Invalid selection.")


def newnote():
    global editor
    print()
    f = tempfile.NamedTemporaryFile(mode='w+')
    f.write("")
    f.flush()
    command = editor + " " + f.name
    status = os.system(command)
    f.seek(0, 0)
    text = f.read()
    f.close()
    assert not os.path.exists(f.name)
    if text == "":
        clearscreen()
        print("Nothing to do.")
        return
    print("Saving...")
    api.do("savenote", {
        "text": text
    })
    print("Note created!")


def mainmenu():
    print("\n======================")
    print("Main Menu")
    print("======================")
    print("E. View and edit notes")
    print("C. Create a new note")
    print("Q. Exit")
    option = input("Choose an option: ").upper()
    clearscreen()
    if option == "E":
        editmenu()
    elif option == "C":
        newnote()
    elif option == "Q":
        exit(0)
    else:
        print("Unrecognized selection, try again.")


def main():
    print("NotePostCLI v0.1")
    if not checkconfig():
        print("No valid settings file found, running setup wizard.")
        firstsetup()
    else:
        loadconfig()
    while True:
        mainmenu()


if __name__ == "__main__":
    main()