'''Common p4v addins functions'''

# Copyright (c) 2006 Qualcomm
# Miki Tebeka <mtebeka@qualcomm.com>

import wx
from os.path import isfile, dirname, join
import sys
from p4 import P4, P4Error
from optparse import OptionParser
from os import environ
from time import strftime


def fix_path(path):
    '''Fix path in Perfroce

        path - Path to fix
    '''
    if path.endswith("..."):
        return path

    if not path.endswith("/"):
        path += "/"

    return path + "..."

def quick_label(p4, name, path, description, revision=""): 
    '''Do a label "name" on path@revision with desctiption

        p4 - P4 object
        name - Label name
        path - Label root
        description - Label description
        revision - File revision (changelist, label ...)
    '''
    lspec = p4.fetch_label(name)
    lspec["Description"] = description
    lspec["Owner"] = p4.user
    lspec["Options"] = "unlocked"
    lspec["View"] = [path]
    p4.save_label(lspec)
    if revision:
        path += "@%s" % revision
    p4.run_labelsync("-l", name, path)
    lspec["Options"] = "locked"
    p4.save_label(lspec)

def new_change(p4, description=""):
    if not description:
        description = "Change list for %s" % p4.user

    change = p4.fetch_change()
    if "Files" in change:
        del change["Files"]

    change["Description"] = description + "\n"
    res = p4.save_change(change)
    return res[0].split()[1]

def timestamp():
    return strftime("%Y/%m/%d %H:%M:%S")

def client_exists(p4, name):
    for client in p4.run_clients():
        if client["client"] == name:
            return 1
    return 0

def new_client(p4, name, root, mapping, description=""):
    if client_exists(p4, name):
        raise ValueError("client %s already exists" % name)

    if not description:
        description = "Created by %s" % p4.client

    client = p4.fetch_client()
    client = {
        "Description" : description + "\n",
        "Host" : "",
        "Update" : timestamp(),
        "Access" : timestamp(),
        "Client" : name,
        "Owner" : p4.user,
        "LineEnd" : "local",
        "Root" : root,
        "Options" : "noallwrite noclobber nocompress unlocked nomodtime normdir",
        "View" : mapping
    }

    p4.save_client(client)

def branch_exists(p4, name):
    for branch in p4.run_branches():
        if branch["branch"] == name:
            return 1
    return 0

def new_branch(p4, name, source, dest, description=""):
    if branch_exists(p4, name):
        raise ValueError("branch %s already exists" % name)

    if not description:
        description = "Created by %s" % p4.user

    description += "\n"
    branch = p4.fetch_branch(name)
    branch["Owner"] = p4.user
    branch["View"] = ["%s %s" % (source, dest)]
    branch["Description"] = description

    p4.save_branch(branch)


def make_error(name):
    def error(msg):
        '''Show error message

            msg - Error message to show
        '''
        msg = str(msg)
        dlg = wx.MessageDialog(None, msg, "%s Error" % name, wx.OK|wx.ICON_ERROR)
        dlg.ShowModal()
        dlg.Destroy()
    return error

def get(value, envkey):
    '''Get value from "value" or from environment

        value - Value to return if not ""
        envkey - Envrionment key to check if value is ""
    '''
    if value:
        return value
    return environ.get(envkey, "")

def _branch_view_item(p4, branch, index):
    '''Item in branch view

        p4 - P4 object
        branch - Branch name
        index - Item index
    '''
    spec = p4.fetch_branch(branch)
    return spec["View"][0].split()[index]

def branch_source(p4, branch):
    '''Source of branch

        p4 - P4 object
        branch - Branch name
    '''
    return _branch_view_item(p4, branch, 0)

def branch_target(p4, branch):
    '''Target of branch

        p4 - P4 object
        branch - Branch name
    '''
    return _branch_view_item(p4, branch, 1)

def optparser(usage):
    '''Generate command line parser

        usage - Usage string
    '''
    parser = OptionParser(usage)
    parser.add_option("-p", help="Perforce port", dest="port")
    parser.add_option("-u", help="User name", dest="user")
    parser.add_option("-c", help="Client name", dest="client")

    return parser


def gen_p4(opts):
    '''Genearte P4 object from command line options

        opt - Command line options
    '''
    client = get(opts.client, "P4CLIENT")
    user = get(opts.user, "P4USER")
    port = get(opts.port, "P4PORT")

    p4 = P4()
    p4.parse_forms()
    p4.client = client
    p4.user = user
    p4.port = port
    p4.connect()

    return p4


class P4VAddin(wx.Dialog):
    def __init__(self, title=""):
        wx.Dialog.__init__(self, None, -1, title)
        self.set_icon()

    def set_icon(self):
        '''Set application icon'''
        # Icon
        appdir = sys.path[0]
        if isfile(appdir): # py2exe
            appdir = dirname(appdir)

        iconfile = join(appdir, "addins.ico")
        if isfile(iconfile):
            icon = wx.Icon(iconfile, wx.BITMAP_TYPE_ICO)
            self.SetIcon(icon)

    def getval(self, ctrl, name=""):
        '''Get value from control

            ctrl - Control to get value from
            name - Control name (for error)
        '''
        value = ctrl.GetValue().strip()
        if not value:
            if not name:
                name = ctrl.GetName()
            raise ValueError(name)

        return value