# ##### BEGIN GPL LICENSE BLOCK #####
#
#  This program is free software; you can redistribute it and/or
#  modify it under the terms of the GNU General Public License
#  as published by the Free Software Foundation; either version 2
#  of the License, or (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software Foundation,
#  Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#
# ##### END GPL LICENSE BLOCK #####

# <pep8 compliant>
import sys
import bpy

language_id = 'shell'

def add_scrollback(text, text_type):
    for l in text.split('\n'):
        bpy.ops.console.scrollback_append(text=l.replace('\t', '    '),
            type=text_type)


def shell_run(text):
    import os
    add_scrollback(os.popen(text).read(), 'OUTPUT')

class ShellConsoleExec(bpy.types.Operator):
    '''Execute the current console line as a python expression.'''
    bl_idname = "console.execute_" + language_id
    bl_label = "Console Execute"
    bl_register = False

    # Both prompts must be the same length
    PROMPT = '$ '

    # is this working???
    '''
    def poll(self, context):
        return (context.space_data.type == 'PYTHON')
    '''
    # its not :|

    def execute(self, context):
        sc = context.space_data

        try:
            line = sc.history[-1].line
        except:
            return ('CANCELLED',)
            
        bpy.ops.console.scrollback_append(text=sc.prompt + line, type='INPUT')
        
        shell_run(line)
        
        # insert a new blank line
        bpy.ops.console.history_append(text="", current_character=0,
            remove_duplicates=True)

        return ('FINISHED',)


class ShellConsoleAutocomplete(bpy.types.Operator):
    '''Evaluate the namespace up until the cursor and give a list of
    options or complete the name if there is only one.'''
    bl_idname = "console.autocomplete_" + language_id
    bl_label = "Python Console Autocomplete"
    bl_register = False

    def poll(self, context):
        return context.space_data.console_type == 'PYTHON'

    def execute(self, context):
        from console import intellisense

        sc = context.space_data
        
        # TODO
        return ('CANCELLED',)


class ShellConsoleBanner(bpy.types.Operator):
    bl_idname = "console.banner_" + language_id

    def execute(self, context):
        sc = context.space_data
        
        shell_run("bash --version")
        sc.prompt = ShellConsoleExec.PROMPT

        return ('FINISHED',)

bpy.ops.add(ShellConsoleExec)
bpy.ops.add(ShellConsoleAutocomplete)
bpy.ops.add(ShellConsoleBanner)