"""World map visualization tab using pyvis + iframe for reliable rendering."""

import html as html_module
import gradio as gr

from core.world import WorldGraph
from ui.i18n import t


def _generate_map_html() -> str:
    """Generate the interactive world map as an iframe with srcdoc."""
    world = WorldGraph()
    vis_data = world.to_vis_data()

    if not vis_data["nodes"]:
        return f"""
        <div style="text-align:center; padding:80px 20px; color:#888; font-family:Georgia,serif;">
            <div style="margin-bottom:16px;"></div>
            <h2 style="color:#b8a9ff; margin-bottom:8px;">{t('map_empty_title')}</h2>
            <p style="color:#666; font-size:14px;">{t('map_empty_desc')}</p>
        </div>
        """

    try:
        from pyvis.network import Network

        net = Network(
            height="600px",
            width="100%",
            bgcolor="#0f0f1a",
            font_color="#e0e0e0",
            directed=True,
        )

        net.barnes_hut(
            gravity=-5000,
            central_gravity=0.3,
            spring_length=200,
            spring_strength=0.05,
            damping=0.09,
        )

        NODE_STYLES = {
            "location": {"color": "#4a9eff", "shape": "dot", "size": 35, "border": "#2d7dd2"},
            "npc":      {"color": "#50c878", "shape": "diamond", "size": 25, "border": "#3da35d"},
            "quest":    {"color": "#ffd700", "shape": "star", "size": 25, "border": "#ccac00"},
            "item":     {"color": "#ff6b6b", "shape": "triangle", "size": 20, "border": "#cc5555"},
            "creature": {"color": "#ff9f43", "shape": "triangleDown", "size": 20, "border": "#cc7700"},
            "dream":    {"color": "#9b59b6", "shape": "square", "size": 15, "border": "#7d3c98"},
        }

        for node in vis_data["nodes"]:
            style = NODE_STYLES.get(node["type"], NODE_STYLES["location"])
            tooltip = f"<b>{node['label']}</b><br>{node.get('title', '')}"
            net.add_node(
                node["id"],
                label=node["label"],
                color={
                    "background": style["color"],
                    "border": style["border"],
                    "highlight": {"background": "#ffffff", "border": style["color"]},
                },
                shape=style["shape"],
                size=style["size"],
                title=tooltip,
                borderWidth=2,
                shadow=True,
            )

        EDGE_COLORS = {
            "resides_at": "#50c878",
            "located_at": "#4a9eff",
            "given_by": "#ffd700",
            "from_dream": "#9b59b6",
            "connects_to": "#666666",
            "related_to": "#888888",
        }

        for edge in vis_data["edges"]:
            relation = edge.get("label", "")
            color = EDGE_COLORS.get(relation, "#555555")
            net.add_edge(
                edge["from"],
                edge["to"],
                label=relation,
                color={"color": color, "highlight": "#ffffff"},
                width=1.5,
                arrows={"to": {"enabled": True, "scaleFactor": 0.5}},
                smooth={"type": "curvedCW", "roundness": 0.2},
            )

        # Generate full HTML page from pyvis
        map_html = net.generate_html()

        # Inject dark theme CSS
        dark_css = """
        <style>
            body { background-color: #0f0f1a !important; margin: 0; overflow: hidden; }
            #mynetwork { border: 1px solid #333366; border-radius: 12px; }
        </style>
        """
        map_html = map_html.replace("</head>", dark_css + "</head>")

        # Encode as srcdoc iframe (scripts execute in iframe context)
        escaped = html_module.escape(map_html)

        stats = world.stats()

        return f"""
        <div style="margin-bottom:8px;">
            <div style="display:flex; gap:16px; padding:10px; justify-content:center;
                        background:#16162a; border-radius:8px; font-size:13px; border:1px solid #2a2a4a;">
                <span style="color:#4a9eff;">{t('map_location')}</span>
                <span style="color:#50c878;">{t('map_npc')}</span>
                <span style="color:#ffd700;">{t('map_quest')}</span>
                <span style="color:#ff6b6b;">{t('map_item')}</span>
                <span style="color:#9b59b6;">{t('map_dream')}</span>
            </div>
        </div>
        <iframe
            srcdoc="{escaped}"
            style="width:100%; height:600px; border:1px solid #333366; border-radius:12px; background:#0f0f1a;"
            sandbox="allow-scripts allow-same-origin"
        ></iframe>
        <div style="text-align:center; padding:6px; color:#555; font-size:12px;">
            {stats['total_nodes']} {t('map_nodes')} · {stats['total_edges']} {t('map_connections')}
        </div>
        """

    except Exception as e:
        stats = world.stats()
        by_type = stats.get("by_type", {})
        return f"""
        <div style="text-align:center; padding:40px; color:#888;">
            <div style="margin-bottom:12px;"></div>
            <h2>{t('map_overview')}</h2>
            <p>{t('map_location')}: {by_type.get('location', 0)}
               | {t('map_npc')}: {by_type.get('npc', 0)}
               | {t('map_quest')}: {by_type.get('quest', 0)}</p>
            <p style="color:#ff6b6b;">{t('map_render_error')}: {e}</p>
        </div>
        """


def create_map_tab() -> gr.HTML:
    """Create the world map tab UI."""
    map_display = gr.HTML(value=_generate_map_html())
    refresh_btn = gr.Button(t("map_refresh"), variant="secondary")
    refresh_btn.click(fn=_generate_map_html, outputs=[map_display])
    return map_display