"""
字幕管理
Blenderのシーケンサーに字幕を追加
"""

import bpy


class SubtitleManager:
    """字幕の追加と管理を担当"""

    def add_subtitle(
        self,
        context,
        text: str,
        frame_start: int,
        duration_frames: int,
        font_size: int = 48,
        position_y: float = 0.1,
        channel: int = 2,
        **extra_settings,
    ):
        """
        シーケンサーに字幕を追加

        Args:
            context: Blenderコンテキスト
            text: 字幕テキスト
            frame_start: 開始フレーム
            duration_frames: 表示期間（フレーム数）
            font_size: フォントサイズ
            position_y: 垂直位置 (0.0-1.0)
            channel: チャンネル番号
        """
        scene = context.scene

        if not scene.sequence_editor:
            scene.sequence_editor_create()

        seq_editor = scene.sequence_editor

        text_strip = seq_editor.strips.new_effect(
            name="Subtitle",
            type='TEXT',
            channel=channel,
            frame_start=frame_start,
            length=duration_frames,
        )

        text_strip.text = text

        default_settings = {
            'use_shadow': True,
            'shadow_color': (0.0, 0.0, 0.0, 0.8),
            'color': (1.0, 1.0, 1.0, 1.0),
            'blend_type': 'ALPHA_OVER',
            'align_x': 'CENTER',
            'align_y': 'BOTTOM',
        }

        all_settings = default_settings.copy()
        if extra_settings:
            all_settings.update(extra_settings)

        all_settings['font_size'] = font_size

        position_x = all_settings.pop('position_x', 0.5)
        position_y_val = all_settings.pop('position_y', position_y)

        transform_settings = {}
        other_settings = {}

        for prop, value in all_settings.items():
            if prop.startswith('transform_'):
                transform_prop_name = prop[len('transform_'):]
                transform_settings[transform_prop_name] = value
            else:
                other_settings[prop] = value

        for prop, value in other_settings.items():
            try:
                setattr(text_strip, prop, value)
            except AttributeError:
                print(f"[Subtitle] {prop} プロパティは利用できません（スキップ）")
            except Exception as e:
                print(f"[Subtitle] {prop} の設定に失敗: {e}")

        try:
            text_strip.location[0] = position_x
            text_strip.location[1] = position_y_val
        except (AttributeError, TypeError) as e:
            print(f"[Subtitle] location プロパティは利用できません: {e}")

        if transform_settings and hasattr(text_strip, 'transform'):
            for prop, value in transform_settings.items():
                try:
                    setattr(text_strip.transform, prop, value)
                except AttributeError:
                    print(f"[Subtitle] transform.{prop} プロパティは利用できません（スキップ）")
                except Exception as e:
                    print(f"[Subtitle] transform.{prop} の設定に失敗: {e}")

        return text_strip

    def update_subtitle(self, text_strip, **kwargs):
        """既存の字幕を更新"""
        for key, value in kwargs.items():
            if hasattr(text_strip, key):
                setattr(text_strip, key, value)

    def remove_subtitle(self, seq_editor, text_strip):
        """字幕を削除"""
        seq_editor.strips.remove(text_strip)