# OpenShot Video Editor is a program that creates, modifies, and edits video files.
#   Copyright (C) 2009  Jonathan Thomas
#
# This file is part of OpenShot Video Editor (http://launchpad.net/openshot/).
#
# OpenShot Video Editor 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 3 of the License, or
# (at your option) any later version.
#
# OpenShot Video Editor 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 OpenShot Video Editor.  If not, see <http://www.gnu.org/licenses/>.


# Import Blender's python API.  This only works when the script is being
# run from the context of Blender.  Blender contains it's own version of Python
# with this library pre-installed.
import bpy

# Debug Info:
# ./blender -b test.blend -P demo.py
# -b = background mode
# -P = run a Python script within the context of the project file

# Init all of the variables needed by this script.  Because Blender executes
# this script, OpenShot will inject a dictionary of the required parameters
# before this script is executed.
params = {
    'title': 'Oh Yeah! OpenShot!',
    'extrude': 0.1,
    'bevel_depth': 0.02,
    'spacemode': 'CENTER',
    'text_size': 1.5,
    'width': 1.0,
    'fontname': 'Bfont',

    'color': [0.8, 0.8, 0.8],
    'alpha': 1.0,

    'output_path': '/tmp/',
    'fps': 24,
    'quality': 90,
    'file_format': 'PNG',
    'color_mode': 'RGBA',
    'horizon_color': [0.57, 0.57, 0.57],
    'resolution_x': 1920,
    'resolution_y': 1080,
    'resolution_percentage': 100,
    'start_frame': 20,
    'end_frame': 25,
    'animation': True,
}


def get_scale_values(height, width):
    """ Calculate the correct scale parameters to display an image with the
    correct height / width ratio in Blender. """

    height_ratio = 1.0
    width_ratio = float(width) / float(height)

    return (height_ratio, width_ratio)


# INJECT_PARAMS_HERE

# The remainder of this script will modify the current Blender .blend project
# file, and adjust the settings.  The .blend file is specified in the XML file
# that defines this template in OpenShot.
# ----------------------------------------------------------------------------

# Split the picture information
picture1 = params["project_files1"].split("|")
if len(picture1) > 1:
    picture1_scale = get_scale_values(picture1[1], picture1[2])

picture2 = params["project_files2"].split("|")
if len(picture2) > 1:
    picture2_scale = get_scale_values(picture2[1], picture2[2])

picture3 = params["project_files3"].split("|")
if len(picture3) > 1:
    picture3_scale = get_scale_values(picture3[1], picture3[2])

picture4 = params["project_files4"].split("|")
if len(picture4) > 1:
    picture4_scale = get_scale_values(picture4[1], picture4[2])

# Modify picture paths
if len(picture1) > 1:
    bpy.data.objects["Plane.001"].scale.y = -picture1_scale[0]
    bpy.data.objects["Plane.001"].scale.x = -picture1_scale[1]

    if picture1[3] == "image":
        bpy.data.materials["Material.001"].node_tree.nodes[2].image.source = 'FILE'
        bpy.data.materials["Material.001"].node_tree.nodes[2].image.filepath = picture1[0]
    else:
        bpy.data.materials["Material.001"].node_tree.nodes[2].image.source = 'MOVIE'
        bpy.data.materials["Material.001"].node_tree.nodes[2].image.filepath = picture1[0]
        bpy.data.materials["Material.001"].node_tree.nodes[2].image_user.use_cyclic = True
        bpy.data.materials["Material.001"].node_tree.nodes[2].image_user.frame_duration = 230.0

if len(picture2) > 1:
    bpy.data.objects["Plane.002"].scale.y = -picture2_scale[0]
    bpy.data.objects["Plane.002"].scale.x = -picture2_scale[1]

    if picture2[3] == "image":
        bpy.data.materials["Material.002"].node_tree.nodes[2].image.source = 'FILE'
        bpy.data.materials["Material.002"].node_tree.nodes[2].image.filepath = picture2[0]
    else:
        bpy.data.materials["Material.002"].node_tree.nodes[2].image.source = 'MOVIE'
        bpy.data.materials["Material.002"].node_tree.nodes[2].image.filepath = picture2[0]
        bpy.data.materials["Material.002"].node_tree.nodes[2].image_user.use_cyclic = True
        bpy.data.materials["Material.002"].node_tree.nodes[2].image_user.frame_duration = 230.0

if len(picture3) > 1:
    bpy.data.objects["Plane.003"].scale.y = -picture3_scale[0]
    bpy.data.objects["Plane.003"].scale.x = -picture3_scale[1]

    if picture3[3] == "image":
        bpy.data.materials["Material.003"].node_tree.nodes[2].image.source = 'FILE'
        bpy.data.materials["Material.003"].node_tree.nodes[2].image.filepath = picture3[0]
    else:
        bpy.data.materials["Material.003"].node_tree.nodes[2].image.source = 'MOVIE'
        bpy.data.materials["Material.003"].node_tree.nodes[2].image.filepath = picture3[0]
        bpy.data.materials["Material.003"].node_tree.nodes[2].image_user.use_cyclic = True
        bpy.data.materials["Material.003"].node_tree.nodes[2].image_user.frame_duration = 230.0

if len(picture4) > 1:
    bpy.data.objects["Plane.004"].scale.y = -picture4_scale[0]
    bpy.data.objects["Plane.004"].scale.x = -picture4_scale[1]

    if picture3[4] == "image":
        bpy.data.materials["Material.004"].node_tree.nodes[2].image.source = 'FILE'
        bpy.data.materials["Material.004"].node_tree.nodes[2].image.filepath = picture4[0]
    else:
        bpy.data.materials["Material.004"].node_tree.nodes[2].image.source = 'MOVIE'
        bpy.data.materials["Material.004"].node_tree.nodes[2].image.filepath = picture4[0]
        bpy.data.materials["Material.004"].node_tree.nodes[2].image_user.use_cyclic = True
        bpy.data.materials["Material.004"].node_tree.nodes[2].image_user.frame_duration = 230.0

# Set the render options.  It is important that these are set
# to the same values as the current OpenShot project.  These
# params are automatically set by OpenShot
bpy.context.scene.render.filepath = params["output_path"]
bpy.context.scene.render.fps = params["fps"]
bpy.context.scene.render.image_settings.file_format = params["file_format"]
bpy.context.scene.render.image_settings.color_mode = params["color_mode"]
bpy.context.scene.render.film_transparent = params["alpha_mode"]
bpy.data.worlds[0].color = params["horizon_color"]
bpy.context.scene.render.resolution_x = params["resolution_x"]
bpy.context.scene.render.resolution_y = params["resolution_y"]
bpy.context.scene.render.resolution_percentage = params["resolution_percentage"]
bpy.context.scene.frame_start = params["start_frame"]
bpy.context.scene.frame_end = params["end_frame"]

# Animation Speed (use Blender's time remapping to slow or speed up animation)
animation_speed = int(params["animation_speed"])  # time remapping multiplier
new_length = int(params["end_frame"]) * animation_speed  # new length (in frames)
bpy.context.scene.frame_end = new_length
bpy.context.scene.render.frame_map_old = 1
bpy.context.scene.render.frame_map_new = animation_speed
if params["start_frame"] == params["end_frame"]:
    bpy.context.scene.frame_start = params["end_frame"]
    bpy.context.scene.frame_end = params["end_frame"]

# Render the current animation to the params["output_path"] folder
bpy.ops.render.render(animation=params["animation"])
