# -*- coding: utf-8 -*-
'''
Recursively display nested data
===============================

This is the default outputter for most execution functions.

Example output::

    myminion:
        ----------
        foo:
            ----------
            bar:
                baz
            dictionary:
                ----------
                abc:
                    123
                def:
                    456
            list:
                - Hello
                - World
'''
from __future__ import absolute_import, print_function, unicode_literals
# Import python libs
from numbers import Number

# Import salt libs
import salt.output
import salt.utils.color
import salt.utils.odict
import salt.utils.stringutils
from salt.ext import six

try:
    from collections.abc import Mapping
except ImportError:
    from collections import Mapping


class NestDisplay(object):
    '''
    Manage the nested display contents
    '''
    def __init__(self, retcode=0):
        self.__dict__.update(
            salt.utils.color.get_colors(
                __opts__.get('color'),
                __opts__.get('color_theme')
            )
        )
        self.strip_colors = __opts__.get('strip_colors', True)
        self.retcode = retcode

    def ustring(self,
                indent,
                color,
                msg,
                prefix='',
                suffix='',
                endc=None):
        if endc is None:
            endc = self.ENDC

        indent *= ' '
        fmt = '{0}{1}{2}{3}{4}{5}'

        try:
            return fmt.format(
                indent,
                color,
                prefix,
                msg,
                endc,
                suffix)
        except UnicodeDecodeError:
            try:
                return fmt.format(
                    indent,
                    color,
                    prefix,
                    salt.utils.stringutils.to_unicode(msg),
                    endc,
                    suffix)
            except UnicodeDecodeError:
                # msg contains binary data that can't be decoded
                return str(fmt).format(  # future lint: disable=blacklisted-function
                    indent,
                    color,
                    prefix,
                    msg,
                    endc,
                    suffix)

    def display(self, ret, indent, prefix, out):
        '''
        Recursively iterate down through data structures to determine output
        '''
        if isinstance(ret, bytes):
            try:
                ret = salt.utils.stringutils.to_unicode(ret)
            except UnicodeDecodeError:
                # ret contains binary data that can't be decoded
                pass

        if ret is None or ret is True or ret is False:
            out.append(
                self.ustring(
                    indent,
                    self.LIGHT_YELLOW,
                    ret,
                    prefix=prefix
                )
            )
        # Number includes all python numbers types
        #  (float, int, long, complex, ...)
        # use repr() to get the full precision also for older python versions
        # as until about python32 it was limited to 12 digits only by default
        elif isinstance(ret, Number):
            out.append(
                self.ustring(
                    indent,
                    self.LIGHT_YELLOW,
                    repr(ret),
                    prefix=prefix
                )
            )
        elif isinstance(ret, six.string_types):
            first_line = True
            for line in ret.splitlines():
                line_prefix = ' ' * len(prefix) if not first_line else prefix
                if isinstance(line, bytes):
                    out.append(
                        self.ustring(
                            indent,
                            self.YELLOW,
                            'Not string data',
                            prefix=line_prefix
                        )
                    )
                    break
                if self.strip_colors:
                    line = salt.output.strip_esc_sequence(line)
                out.append(
                    self.ustring(
                        indent,
                        self.GREEN,
                        line,
                        prefix=line_prefix
                    )
                )
                first_line = False
        elif isinstance(ret, (list, tuple)):
            color = self.GREEN
            if self.retcode != 0:
                color = self.RED
            for ind in ret:
                if isinstance(ind, (list, tuple, Mapping)):
                    out.append(
                        self.ustring(
                            indent,
                            color,
                            '|_'
                        )
                    )
                    prefix = '' if isinstance(ind, Mapping) else '- '
                    self.display(ind, indent + 2, prefix, out)
                else:
                    self.display(ind, indent, '- ', out)
        elif isinstance(ret, Mapping):
            if indent:
                color = self.CYAN
                if self.retcode != 0:
                    color = self.RED
                out.append(
                    self.ustring(
                        indent,
                        color,
                        '----------'
                    )
                )

            # respect key ordering of ordered dicts
            if isinstance(ret, salt.utils.odict.OrderedDict):
                keys = ret.keys()
            else:
                keys = sorted(ret)
            color = self.CYAN
            if self.retcode != 0:
                color = self.RED
            for key in keys:
                val = ret[key]
                out.append(
                    self.ustring(
                        indent,
                        color,
                        key,
                        suffix=':',
                        prefix=prefix
                    )
                )
                self.display(val, indent + 4, '', out)
        return out


def output(ret, **kwargs):
    '''
    Display ret data
    '''
    # Prefer kwargs before opts
    retcode = kwargs.get('_retcode', 0)
    base_indent = kwargs.get('nested_indent', 0) \
        or __opts__.get('nested_indent', 0)
    nest = NestDisplay(retcode=retcode)
    lines = nest.display(ret, base_indent, '', [])
    try:
        return '\n'.join(lines)
    except UnicodeDecodeError:
        # output contains binary data that can't be decoded
        return str('\n').join(  # future lint: disable=blacklisted-function
            [salt.utils.stringutils.to_str(x) for x in lines]
        )