"""
커스텀 모달 컴포넌트 (Gradio 6 호환)
순수 gr.HTML 기반 구현

사용법:
    from frontend.components.custom_modal import Modal

    with gr.Blocks() as demo:
        modal = Modal(elem_id="my-modal")
        modal.render()

        # 모달 열기
        show_btn.click(
            fn=lambda content: Modal.show(content),
            outputs=[modal.component]
        )

        # 모달 닫기 (자동 - X 버튼, ESC, 배경 클릭)
"""

import gradio as gr


class Modal:
    """
    Gradio 6 호환 커스텀 모달 컴포넌트

    gr.HTML의 html_template, css_template, js_on_load를 활용하여 모달 기능 구현
    """

    backup_button = """
        <button class="modal-close" data-modal-close="true">
            <svg width="12" height="12" viewBox="0 0 10 10" fill="none" xmlns="http://www.w3.org/2000/svg">
                <path d="M1 1L9 9" stroke="currentColor" stroke-width="2" stroke-linecap="round"/>
                <path d="M9 1L1 9" stroke="currentColor" stroke-width="2" stroke-linecap="round"/>
            </svg>
        </button>"""

    # 모달 HTML 템플릿 - visible이 true일 때만 렌더링
    # 다크모드 감지: document.body나 .gradio-container에 .dark 클래스가 있는지 확인
    HTML_TEMPLATE = """
    ${value && value.visible ? `
    <div class="modal-overlay ${document.body.classList.contains('dark') || document.querySelector('.dark') ? 'modal-dark' : ''}" data-modal-overlay="true">
        <div class="modal-container">

            <div class="modal-content">
                ${value.content || ''}
            </div>
        </div>
    </div>
    ` : ''}
    """

    # 모달 CSS 스타일
    CSS_TEMPLATE = """
    .modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.15);
        backdrop-filter: blur(2px);
        z-index: 1000;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    /* 다크모드: 블러 제거, 반투명 배경만 */
    .modal-overlay.modal-dark {
        background-color: rgba(0, 0, 0, 0.3) !important;
    }

    .modal-container {
        background: var(--background-fill-primary, #ffffff);
        border-radius: 20px;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
        width: 92%;
        min-width: 350px;
        max-width: 600px;
        max-height: 95vh;
        overflow-y: auto;
        position: relative;
        animation: modalFadeIn 0.2s ease-out;
    }

    /* 다크모드 모달 컨테이너 */
    .modal-dark .modal-container {
        background: #1a1a1b;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    }

    .modal-dark .modal-close {
        background: #3a3a3c;
        border-color: #4a4a4c;
        color: #ffffff;
    }

    .modal-dark .modal-close:hover {
        background: #4a4a4c;
    }

    @keyframes modalFadeIn {
        from {
            opacity: 0;
            transform: scale(0.95) translateY(-10px);
        }
        to {
            opacity: 1;
            transform: scale(1) translateY(0);
        }
    }

    .modal-close {
        position: absolute;
        top: 12px;
        right: 12px;
        background: var(--background-fill-secondary, #f0f0f0);
        border: 1px solid var(--border-color-primary, #ddd);
        border-radius: 50%;
        width: 40px;
        height: 40px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--body-text-color, #333);
        transition: all 0.2s ease;
        z-index: 10;
        padding: 0;
    }

    .modal-close:hover {
        background: var(--background-fill-secondary-hover, #e0e0e0);
        transition: colors 0.2s ease;
    }

    .modal-content {
        padding: 20px;
    }
    """

    # 모달 JavaScript (이벤트 핸들링)
    JS_ON_LOAD = """
    // ESC 키로 닫기
    const handleKeydown = (e) => {
        if (e.key === 'Escape' && props.value && props.value.visible) {
            props.value = { visible: false, content: '' };
        }
    };
    document.addEventListener('keydown', handleKeydown);

    // 클릭 이벤트 (배경 클릭, X 버튼)
    element.addEventListener('click', (e) => {
        // 배경 클릭
        if (e.target.dataset.modalOverlay === 'true') {
            props.value = { visible: false, content: '' };
        }

        // X 버튼 클릭
        if (e.target.closest('[data-modal-close="true"]')) {
            props.value = { visible: false, content: '' };
        }
    });
    """

    def __init__(
        self,
        visible: bool = False,
        content: str = "",
        elem_id: str | None = None,
        elem_classes: list[str] | str | None = None,
    ):
        """
        모달 초기화

        Args:
            visible: 모달 표시 여부
            content: 모달 내부 HTML 콘텐츠
            elem_id: HTML element ID
            elem_classes: HTML element classes
        """
        self.visible = visible
        self.content = content
        self.elem_id = elem_id
        self.elem_classes = elem_classes
        self.component = None

    def render(self) -> gr.HTML:
        """
        모달 컴포넌트 렌더링

        Returns:
            gr.HTML: 렌더링된 모달 컴포넌트
        """
        self.component = gr.HTML(
            value={"visible": self.visible, "content": self.content},
            html_template=self.HTML_TEMPLATE,
            css_template=self.CSS_TEMPLATE,
            js_on_load=self.JS_ON_LOAD,
            elem_id=self.elem_id,
            elem_classes=self.elem_classes,
        )
        return self.component

    @staticmethod
    def show(content: str = "") -> dict:
        """모달 열기"""
        return {"visible": True, "content": content}

    @staticmethod
    def hide() -> dict:
        """모달 닫기"""
        return {"visible": False, "content": ""}