from functools import partial

from kivy.app import App
from kivy.clock import Clock
from kivy.lang import Builder
from kivy.properties import ObjectProperty, StringProperty, OptionProperty
from kivy.core.window import Window
from kivy.uix.button import Button
from kivy.utils import platform

from electrum_gui.kivy.uix.dialogs import EventsDialog
from electrum_gui.kivy.i18n import _

test_xpub = "xpub661MyMwAqRbcFpV2JqonBDKdgJiExpxiSAtvphtpviunv42FNVJNNRA3Zdy5kQXoK7NpwUC2QQPXVMLKLoHxaekNfemFs5zkfrNnk91dobZ"
test_seed = "powder idea leader task pretty harsh resemble alert quit athlete clerk almost able"
is_test = platform != 'android'

Builder.load_string('''
#:import Window kivy.core.window.Window
#:import _ electrum_gui.kivy.i18n._


<WizardTextInput@TextInput>
    border: 4, 4, 4, 4
    font_size: '15sp'
    padding: '15dp', '15dp'
    background_color: (1, 1, 1, 1) if self.focus else (0.454, 0.698, 0.909, 1)
    foreground_color: (0.31, 0.31, 0.31, 1) if self.focus else (0.835, 0.909, 0.972, 1)
    hint_text_color: self.foreground_color
    background_active: 'atlas://gui/kivy/theming/light/create_act_text_active'
    background_normal: 'atlas://gui/kivy/theming/light/create_act_text_active'
    size_hint_y: None
    height: '48sp'

<WizardButton@Button>:
    root: None
    size_hint: 1, None
    height: '48sp'
    on_press: if self.root: self.root.dispatch('on_press', self)
    on_release: if self.root: self.root.dispatch('on_release', self)

<BigLabel@Label>
    color: .854, .925, .984, 1
    size_hint: 1, None
    text_size: self.width, None
    height: self.texture_size[1]
    bold: True

<-WizardDialog>
    text_color: .854, .925, .984, 1
    value: ''
    #auto_dismiss: False
    size_hint: None, None
    canvas.before:
        Color:
            rgba: 0, 0, 0, .9
        Rectangle:
            size: Window.size
        Color:
            rgba: .239, .588, .882, 1
        Rectangle:
            size: Window.size

    crcontent: crcontent
    # add electrum icon
    BoxLayout:
        orientation: 'vertical' if self.width < self.height else 'horizontal'
        padding:
            min(dp(27), self.width/32), min(dp(27), self.height/32),\
            min(dp(27), self.width/32), min(dp(27), self.height/32)
        spacing: '10dp'
        GridLayout:
            id: grid_logo
            cols: 1
            pos_hint: {'center_y': .5}
            size_hint: 1, None
            height: self.minimum_height
            Label:
                color: root.text_color
                text: 'ELECTRUM'
                size_hint: 1, None
                height: self.texture_size[1] if self.opacity else 0
                font_size: '33sp'
                font_name: 'gui/kivy/data/fonts/tron/Tr2n.ttf'
        GridLayout:
            cols: 1
            id: crcontent
            spacing: '1dp'
        Widget:
            size_hint: 1, 0.3
        GridLayout:
            rows: 1
            spacing: '12dp'
            size_hint: 1, None
            height: self.minimum_height
            WizardButton:
                id: back
                text: _('Back')
                root: root
            WizardButton:
                id: next
                text: _('Next')
                root: root
                disabled: root.value == ''


<WizardMultisigDialog>
    value: 'next'
    Widget
        size_hint: 1, 1
    Label:
        color: root.text_color
        size_hint: 1, None
        text_size: self.width, None
        height: self.texture_size[1]
        text: _("Choose the number of signatures needed to unlock funds in your wallet")
    Widget
        size_hint: 1, 1
    GridLayout:
        orientation: 'vertical'
        cols: 2
        spacing: '14dp'
        size_hint: 1, 1
        height: self.minimum_height
        Label:
            color: root.text_color
            text: _('From %d cosigners')%n.value
        Slider:
            id: n
            range: 2, 5
            step: 1
            value: 2
        Label:
            color: root.text_color
            text: _('Require %d signatures')%m.value
        Slider:
            id: m
            range: 1, n.value
            step: 1
            value: 2


<WizardChoiceDialog>
    msg : ''
    Widget:
        size_hint: 1, 1
    Label:
        color: root.text_color
        size_hint: 1, None
        text_size: self.width, None
        height: self.texture_size[1]
        text: root.msg
    Widget
        size_hint: 1, 1
    GridLayout:
        row_default_height: '48dp'
        orientation: 'vertical'
        id: choices
        cols: 1
        spacing: '14dp'
        size_hint: 1, None

<MButton@Button>:
    size_hint: 1, None
    height: '33dp'
    on_release:
        self.parent.update_amount(self.text)

<WordButton@Button>:
    size_hint: None, None
    padding: '5dp', '5dp'
    text_size: None, self.height
    width: self.texture_size[0]
    height: '30dp'
    on_release:
        self.parent.new_word(self.text)


<SeedButton@Button>:
    height: dp(100)
    border: 4, 4, 4, 4
    halign: 'justify'
    valign: 'top'
    font_size: '18dp'
    text_size: self.width - dp(24), self.height - dp(12)
    color: .1, .1, .1, 1
    background_normal: 'atlas://gui/kivy/theming/light/white_bg_round_top'
    background_down: self.background_normal
    size_hint_y: None


<SeedLabel@Label>:
    font_size: '12sp'
    text_size: self.width, None
    size_hint: 1, None
    height: self.texture_size[1]
    halign: 'justify'
    valign: 'middle'
    border: 4, 4, 4, 4


<RestoreSeedDialog>
    word: ''
    BigLabel:
        text: "ENTER YOUR SEED PHRASE"
    GridLayout
        cols: 1
        padding: 0, '12dp'
        orientation: 'vertical'
        spacing: '12dp'
        size_hint: 1, None
        height: self.minimum_height
        SeedButton:
            id: text_input_seed
            text: ''
            on_text: Clock.schedule_once(root.on_text)
        SeedLabel:
            text: root.message
        BoxLayout:
            id: suggestions
            height: '35dp'
            size_hint: 1, None
            new_word: root.on_word
        BoxLayout:
            id: line1
            update_amount: root.update_text
            size_hint: 1, None
            height: '30dp'
            MButton:
                text: 'Q'
            MButton:
                text: 'W'
            MButton:
                text: 'E'
            MButton:
                text: 'R'
            MButton:
                text: 'T'
            MButton:
                text: 'Y'
            MButton:
                text: 'U'
            MButton:
                text: 'I'
            MButton:
                text: 'O'
            MButton:
                text: 'P'
        BoxLayout:
            id: line2
            update_amount: root.update_text
            size_hint: 1, None
            height: '30dp'
            Widget:
                size_hint: 0.5, None
                height: '33dp'
            MButton:
                text: 'A'
            MButton:
                text: 'S'
            MButton:
                text: 'D'
            MButton:
                text: 'F'
            MButton:
                text: 'G'
            MButton:
                text: 'H'
            MButton:
                text: 'J'
            MButton:
                text: 'K'
            MButton:
                text: 'L'
            Widget:
                size_hint: 0.5, None
                height: '33dp'
        BoxLayout:
            id: line3
            update_amount: root.update_text
            size_hint: 1, None
            height: '30dp'
            Widget:
                size_hint: 1, None
            MButton:
                text: 'Z'
            MButton:
                text: 'X'
            MButton:
                text: 'C'
            MButton:
                text: 'V'
            MButton:
                text: 'B'
            MButton:
                text: 'N'
            MButton:
                text: 'M'
            MButton:
                text: ' '
            MButton:
                text: '<'

<AddXpubDialog>
    title: ''
    message: ''
    BigLabel:
        text: root.title
    GridLayout
        cols: 1
        padding: 0, '12dp'
        orientation: 'vertical'
        spacing: '12dp'
        size_hint: 1, None
        height: self.minimum_height
        SeedButton:
            id: text_input
            text: ''
            on_text: Clock.schedule_once(root.check_text)
        SeedLabel:
            text: root.message
    GridLayout
        rows: 1
        spacing: '12dp'
        size_hint: 1, None
        height: self.minimum_height
        IconButton:
            id: scan
            height: '48sp'
            on_release: root.scan_xpub()
            icon: 'atlas://gui/kivy/theming/light/camera'
            size_hint: 1, None
        WizardButton:
            text: _('Paste')
            on_release: root.do_paste()
        WizardButton:
            text: _('Clear')
            on_release: root.do_clear()


<ShowXpubDialog>
    xpub: ''
    message: _('Here is your master public key. Share it with your cosigners.')
    BigLabel:
        text: "MASTER PUBLIC KEY"
    GridLayout
        cols: 1
        padding: 0, '12dp'
        orientation: 'vertical'
        spacing: '12dp'
        size_hint: 1, None
        height: self.minimum_height
        SeedButton:
            id: text_input
            text: root.xpub
        SeedLabel:
            text: root.message
    GridLayout
        rows: 1
        spacing: '12dp'
        size_hint: 1, None
        height: self.minimum_height
        WizardButton:
            text: _('QR code')
            on_release: root.do_qr()
        WizardButton:
            text: _('Copy')
            on_release: root.do_copy()
        WizardButton:
            text: _('Share')
            on_release: root.do_share()


<ShowSeedDialog>
    spacing: '12dp'
    value: 'next'
    BigLabel:
        text: "PLEASE WRITE DOWN YOUR SEED PHRASE"
    GridLayout:
        id: grid
        cols: 1
        pos_hint: {'center_y': .5}
        size_hint_y: None
        height: self.minimum_height
        orientation: 'vertical'
        spacing: '12dp'
        SeedButton:
            text: root.seed_text
        SeedLabel:
            text: root.message
''')



class WizardDialog(EventsDialog):
    ''' Abstract dialog to be used as the base for all Create Account Dialogs
    '''
    crcontent = ObjectProperty(None)

    def __init__(self, **kwargs):
        super(WizardDialog, self).__init__(**kwargs)
        self.action = kwargs.get('action')
        _trigger_size_dialog = Clock.create_trigger(self._size_dialog)
        Window.bind(size=_trigger_size_dialog,
                    rotation=_trigger_size_dialog)
        _trigger_size_dialog()

    def _size_dialog(self, dt):
        app = App.get_running_app()
        if app.ui_mode[0] == 'p':
            self.size = Window.size
        else:
            #tablet
            if app.orientation[0] == 'p':
                #portrait
                self.size = Window.size[0]/1.67, Window.size[1]/1.4
            else:
                self.size = Window.size[0]/2.5, Window.size[1]

    def add_widget(self, widget, index=0):
        if not self.crcontent:
            super(WizardDialog, self).add_widget(widget)
        else:
            self.crcontent.add_widget(widget, index=index)

    def on_dismiss(self):
        app = App.get_running_app()
        if app.wallet is None and self._on_release is not None:
            app.stop()


class WizardMultisigDialog(WizardDialog):
    pass

class WizardChoiceDialog(WizardDialog):
    ''' Multiple choices dialog '''

    def __init__(self, **kwargs):
        super(WizardChoiceDialog, self).__init__(**kwargs)
        self.msg = kwargs.get('msg', '')
        choices = kwargs.get('choices', [])
        layout = self.ids.choices
        layout.bind(minimum_height=layout.setter('height'))
        for text, action in choices:
            l = WizardButton(text=text)
            l.action = action
            l.height = '48dp'
            l.root = self
            layout.add_widget(l)

    def on_parent(self, instance, value):
        if value:
            app = App.get_running_app()
            self._back = _back = partial(app.dispatch, 'on_back')


class ShowSeedDialog(WizardDialog):

    seed_text = StringProperty('')
    message = StringProperty('')

    def on_parent(self, instance, value):
        if value:
            app = App.get_running_app()
            self._back = _back = partial(self.ids.back.dispatch, 'on_release')


class WordButton(Button):
    pass

class WizardButton(Button):
    pass

class RestoreSeedDialog(WizardDialog):

    message = StringProperty('')

    def __init__(self, **kwargs):
        super(RestoreSeedDialog, self).__init__(**kwargs)
        self._test = kwargs['test']
        from electrum.mnemonic import Mnemonic
        from electrum.old_mnemonic import words as old_wordlist
        self.words = set(Mnemonic('en').wordlist).union(set(old_wordlist))
        self.ids.text_input_seed.text = test_seed if is_test else ''

    def get_suggestions(self, prefix):
        for w in self.words:
            if w.startswith(prefix):
                yield w

    def on_text(self, dt):
        self.ids.next.disabled = not bool(self._test(self.get_text()))

        text = self.ids.text_input_seed.text
        if not text:
            last_word = ''
        elif text[-1] == ' ':
            last_word = ''
        else:
            last_word = text.split(' ')[-1]

        enable_space = False
        self.ids.suggestions.clear_widgets()
        suggestions = [x for x in self.get_suggestions(last_word)]
        if suggestions and len(suggestions) < 10:
            for w in suggestions:
                if w == last_word:
                    enable_space = True
                else:
                    b = WordButton(text=w)
                    self.ids.suggestions.add_widget(b)

        i = len(last_word)
        p = set()
        for x in suggestions:
            if len(x)>i: p.add(x[i])

        for line in [self.ids.line1, self.ids.line2, self.ids.line3]:
            for c in line.children:
                if isinstance(c, Button):
                    if c.text in 'ABCDEFGHIJKLMNOPQRSTUVWXYZ':
                        c.disabled = (c.text.lower() not in p) and last_word
                    elif c.text == ' ':
                        c.disabled = not enable_space

    def on_word(self, w):
        text = self.get_text()
        words = text.split(' ')
        words[-1] = w
        text = ' '.join(words)
        self.ids.text_input_seed.text = text + ' '
        self.ids.suggestions.clear_widgets()

    def get_text(self):
        ti = self.ids.text_input_seed
        text = unicode(ti.text).strip()
        text = ' '.join(text.split())
        return text

    def update_text(self, c):
        c = c.lower()
        text = self.ids.text_input_seed.text
        if c == '<':
            text = text[:-1]
        else:
            text += c
        self.ids.text_input_seed.text = text

    def on_parent(self, instance, value):
        if value:
            tis = self.ids.text_input_seed
            tis.focus = True
            #tis._keyboard.bind(on_key_down=self.on_key_down)
            self._back = _back = partial(self.ids.back.dispatch,
                                         'on_release')
            app = App.get_running_app()

    def on_key_down(self, keyboard, keycode, key, modifiers):
        if keycode[0] in (13, 271):
            self.on_enter()
            return True

    def on_enter(self):
        #self._remove_keyboard()
        # press next
        next = self.ids.next
        if not next.disabled:
            next.dispatch('on_release')

    def _remove_keyboard(self):
        tis = self.ids.text_input_seed
        if tis._keyboard:
            tis._keyboard.unbind(on_key_down=self.on_key_down)
            tis.focus = False


class ShowXpubDialog(WizardDialog):

    def __init__(self, **kwargs):
        WizardDialog.__init__(self, **kwargs)
        self.app = App.get_running_app()
        self.xpub = kwargs['xpub']
        self.ids.next.disabled = False

    def do_copy(self):
        self.app._clipboard.copy(self.xpub)

    def do_share(self):
        self.app.do_share(self.xpub, _("Master Public Key"))

    def do_qr(self):
        from qr_dialog import QRDialog
        popup = QRDialog(_("Master Public Key"), self.xpub, True)
        popup.open()


class AddXpubDialog(WizardDialog):

    def __init__(self, **kwargs):
        WizardDialog.__init__(self, **kwargs)
        self.app = App.get_running_app()
        self._test = kwargs['test']
        self.title = kwargs['title']
        self.message = kwargs['message']

    def check_text(self, dt):
        self.ids.next.disabled = not bool(self._test(self.get_text()))

    def get_text(self):
        ti = self.ids.text_input
        return unicode(ti.text).strip()

    def scan_xpub(self):
        def on_complete(text):
            self.ids.text_input.text = text
        self.app.scan_qr(on_complete)

    def do_paste(self):
        self.ids.text_input.text = test_xpub if is_test else unicode(self.app._clipboard.paste())

    def do_clear(self):
        self.ids.text_input.text = ''