import json
import pathlib
import sys

import bpy


FIXTURE = pathlib.Path(sys.argv[sys.argv.index("--") + 1]).resolve()
REPORT = pathlib.Path(sys.argv[sys.argv.index("--") + 2]).resolve()
OUTPUT = pathlib.Path(sys.argv[sys.argv.index("--") + 3]).resolve()


class DriverButtonPanel(bpy.types.Panel):
    bl_label = "Driver Button Experiment"
    bl_idname = "WEBGAP_PT_driver_button_experiment"
    bl_space_type = "PROPERTIES"
    bl_region_type = "WINDOW"
    bl_context = "object"
    bl_order = -1000

    def draw(self, context):
        self.layout.prop(context.object, '["drive_target"]', text="drive_target")


bpy.utils.register_class(DriverButtonPanel)


def driver_report(obj):
    if obj is None or obj.animation_data is None:
        return []
    return [
        {
            "path": curve.data_path,
            "index": curve.array_index,
            "expression": curve.driver.expression if curve.driver else "",
        }
        for curve in obj.animation_data.drivers
    ]


def poll_driver():
    current = driver_report(obj)
    if current:
        REPORT.write_text(json.dumps({"drivers": current}, indent=2) + "\n", encoding="utf-8")
        bpy.ops.wm.save_as_mainfile(filepath=str(OUTPUT), check_existing=False, compress=True)
        return None
    return 0.25


bpy.ops.wm.open_mainfile(filepath=str(FIXTURE), load_ui=False)
obj = bpy.data.objects.get("WebGapAnimDriverButtonAddObject")


def setup_ui():
    window = bpy.context.window
    if window is None:
        return 0.25
    screen = window.screen
    area = next(candidate for candidate in screen.areas if candidate.type == "PROPERTIES")
    area.spaces.active.context = "OBJECT"
    bpy.app.timers.register(poll_driver, first_interval=0.5)
    return None


bpy.app.timers.register(setup_ui, first_interval=0.5)