import bpy


class SCENERENDERER_PT_panel(bpy.types.Panel):
    bl_label = "Scene Renderer"
    bl_idname = "SCENERENDERER_PT_panel"
    bl_space_type = 'VIEW_3D'
    bl_region_type = 'UI'
    bl_category = "Scene Renderer"

    def draw(self, context):
        layout = self.layout
        settings = context.scene.scene_renderer

        # --- General toggles ---
        row = layout.row(align=True)
        row.prop(settings, "test_mode", toggle=True)
        row.prop(settings, "skip_existing", toggle=True)

        layout.prop(settings, "use_cpu")

        # --- Resolution ---
        box = layout.box()
        row = box.row()
        row.prop(settings, "override_resolution")
        if settings.override_resolution:
            col = box.column(align=True)
            col.prop(settings, "resolution_x")
            col.prop(settings, "resolution_y")
            col.prop(settings, "resolution_percentage", slider=True)

        # --- Sampling ---
        box = layout.box()
        box.label(text="Sampling", icon='OUTLINER_OB_LIGHT')
        box.prop(settings, "samples")
        box.prop(settings, "min_samples")

        row = box.row()
        row.prop(settings, "use_noise_threshold", text="Noise Threshold")
        sub = row.row()
        sub.active = settings.use_noise_threshold
        sub.prop(settings, "noise_threshold", text="")

        box.prop(settings, "time_limit")

        # --- Denoising ---
        box = layout.box()
        box.label(text="Denoising", icon='MOD_SMOOTH')
        box.prop(settings, "use_denoising")
        if settings.use_denoising:
            box.prop(settings, "denoiser")
            box.prop(settings, "denoising_input_passes")

        # --- Light Bounces ---
        box = layout.box()
        box.label(text="Light Bounces", icon='LIGHT_SUN')
        box.prop(settings, "max_bounces")
        col = box.column(align=True)
        col.prop(settings, "diffuse_bounces")
        col.prop(settings, "glossy_bounces")
        col.prop(settings, "transmission_bounces")
        col.prop(settings, "transparent_max_bounces")
        col.prop(settings, "volume_bounces")

        # --- Clamping ---
        box = layout.box()
        row = box.row()
        row.prop(settings, "use_clamping")
        if settings.use_clamping:
            col = box.column(align=True)
            col.prop(settings, "clamp_direct")
            col.prop(settings, "clamp_indirect")

        # --- Film ---
        box = layout.box()
        box.label(text="Film", icon='CAMERA_DATA')
        box.prop(settings, "film_transparent")
        box.prop(settings, "film_filter_width")

        # --- Output ---
        box = layout.box()
        box.label(text="Output", icon='OUTPUT')
        box.prop(settings, "output_format")
        # Color depth only for formats that support it
        if settings.output_format in ('PNG', 'TIFF', 'OPEN_EXR'):
            box.prop(settings, "color_depth")

        # --- Color Management ---
        box = layout.box()
        box.label(text="Color", icon='SHADING_RENDERED')
        box.prop(settings, "exposure", slider=True)
        box.prop(settings, "look")

        # --- Render button ---
        layout.separator()

        from . import operators
        if operators.g_is_rendering:
            scene_name = ""
            if len(operators.g_scenes_to_render) > 0 and operators.g_render_index > 0:
                scene_name = operators.g_scenes_to_render[operators.g_render_index - 1]
            
            layout.label(text=f"Rendering: {scene_name} ({operators.g_render_index}/{len(operators.g_scenes_to_render)})", icon='SCENE_DATA')
            
            if operators.g_progress_text:
                layout.label(text=operators.g_progress_text, icon='TIME')
            else:
                layout.label(text="Initializing...", icon='TIME')

            row = layout.row(align=True)
            row.scale_y = 2.0
            row.operator(
                "scenerenderer.cancel_batch",
                text="Cancel Render",
                icon='CANCEL',
            )
        else:
            row = layout.row(align=True)
            row.scale_y = 2.0
            op1 = row.operator("scenerenderer.render_all", text="Current Scene", icon='RENDER_STILL')
            op1.render_only_current = True
            op2 = row.operator("scenerenderer.render_all", text="All Scenes", icon='RENDER_ANIMATION')
            op2.render_only_current = False
            
            layout.separator()
            row = layout.row(align=True)
            row.scale_y = 2.0
            row.operator("scenerenderer.launch_swarm", text="Start Render Swarm (Network)", icon='NODETREE')