#!/usr/bin/env python
import os, sys, argparse

import pbincli.actions
from pbincli.api import PrivateBin
from pbincli.utils import PBinCLIException

CONFIG_PATHS = [os.path.join(".", "pbincli.conf", ),
       os.path.join(os.getenv("HOME") or "~", ".config", "pbincli", "pbincli.conf") ]

def read_config(filename):
    """Read config variables from a file"""
    settings = {}
    with open(filename) as f:
        for l in f.readlines():
            key, value = l.strip().split("=")
            settings[key.strip()] = value.strip()

    return settings

def main():
    parser = argparse.ArgumentParser()
    subparsers = parser.add_subparsers(title="actions", help="List of commands")

    # a send command
    send_parser = subparsers.add_parser("send", description="Send data to PrivateBin instance", usage="""
%(prog)s --burn --discus --expire 1day --format plaintext \\
    --text "My file" --password mypass image.txt"""
    )
    send_parser.add_argument("-B", "--burn", default=False, action="store_true", help="burn sent paste after reading")
    send_parser.add_argument("-D", "--discus", default=False, action="store_true", help="open discussion of sent paste")
    send_parser.add_argument("-E", "--expire", default="1day", action="store",
        choices=["5min", "10min", "1hour", "1day", "1week", "1month", "1year", "never"], help="expiration of paste (default: 1day)")
    send_parser.add_argument("-F", "--format", default="plaintext", action="store",
        choices=["plaintext", "syntaxhighlighting", "markdown"], help="format of text (default: plaintext)")
    send_parser.add_argument("-t", "--text", help="comment in quotes. Ignored if used stdin")
    send_parser.add_argument("-p", "--password", help="password for encrypting paste")
    send_parser.add_argument("-d", "--debug", default=False, action="store_true", help="enable debug")
    send_parser.add_argument("--dry", default=False, action="store_true", help="invoke dry run")
    send_parser.add_argument("-f", "--file", help="example: image.jpg or full path to file")

    send_parser.add_argument("stdin", help="input paste text from stdin", nargs="?", type=argparse.FileType("r"), default=sys.stdin)
    send_parser.set_defaults(func=pbincli.actions.send)

    get_parser = subparsers.add_parser("get", description="Get data from PrivateBin instance", usage="""
%(prog)s pasteid#password"""
    )
    get_parser.add_argument("pasteinfo", help="example: aabb#cccddd")
    get_parser.add_argument("-d", "--debug", default=False, action="store_true", help="enable debug")
    get_parser.add_argument("-p", "--password", help="password for decrypting paste")
    get_parser.set_defaults(func=pbincli.actions.get)

    delete_parser = subparsers.add_parser("delete", description="Delete paste from PrivateBin instance using token", usage="""
%(prog)s --paste aabb --token aabbcc"""
    )
    delete_parser.add_argument("-p", "--paste", required=True, help="paste id")
    delete_parser.add_argument("-t", "--token", required=True, help="delete token")
    delete_parser.add_argument("-d", "--debug", default=False, action="store_true", help="enable debug")
    delete_parser.set_defaults(func=pbincli.actions.delete)

    # parse arguments
    args = parser.parse_args()

    CONFIG = {"server": "https://paste.i2pd.xyz/",
              "proxy": None}

    for p in CONFIG_PATHS:
        if os.path.exists(p):
            CONFIG.update(read_config(p))
            break

    for key in CONFIG.keys():
        var = "PRIVATEBIN_{}".format(key.upper())
        if var in os.environ: CONFIG[key] = os.getenv(var)

    api_client = PrivateBin(CONFIG["server"], proxy=CONFIG["proxy"])

    if hasattr(args, "func"):
        try:
            args.func(args, api_client)
        except PBinCLIException as pe:
            print("PBinCLI error: {}".format(pe))
            sys.exit(1)
    else:
        parser.print_help()


if __name__ == "__main__":
    main()