"""
Knowledge Universe — HTML Format Adapter
Rich HTML cards for UI rendering.
Each format gets its own card layout:
  video → thumbnail + play button
  jupyter → code preview + Colab link
  dataset → stats + download button
  podcast → artwork + episode count
  pdf → page count + download button
  github → stars + clone button
"""

from typing import Any
from src.api.models import Source, SourceFormat
from src.format_adapters.base_adapter import BaseFormatAdapter


class HTMLFormatAdapter(BaseFormatAdapter):
    """
    Produces rich HTML cards per source type.
    Used by the Streamlit demo and any HTML-consuming client.
    """

    FORMAT_ICONS = {
        "pdf":        "📄",
        "video":      "▶️",
        "jupyter":    "📓",
        "github":     "🐙",
        "dataset":    "📊",
        "podcast":    "🎧",
        "audio":      "🔊",
        "html":       "🌐",
        "epub":       "📚",
        "markdown":   "📝",
        "sandbox":    "🎮",
        "simulation": "🔬",
        "knowledge_graph": "🕸️",
        "problem_set":"📐",
        "flashcards": "🃏",
        "3d_model":   "🧊",
        "map":        "🗺️",
        "timeseries": "📈",
        "stackoverflow": "💬",
        "colab":      "⚡",
    }

    def transform(self, source: Source) -> str:
        fmt = source.formats[0].value if source.formats else "html"
        icon = self.FORMAT_ICONS.get(fmt, "🔗")
        stars = "⭐" * source.difficulty

        access_links = "".join([
            f'<a href="{link.url}" target="_blank" '
            f'style="background:#0066cc;color:white;padding:6px 12px;'
            f'border-radius:4px;text-decoration:none;margin-right:8px;font-size:12px;">'
            f'{link.type.upper()}</a>'
            for link in source.links[:2]
        ])

        format_badges = "".join([
            f'<span style="background:#e8f0fe;color:#1a73e8;padding:2px 8px;'
            f'border-radius:12px;font-size:11px;margin-right:4px;">{f.value}</span>'
            for f in source.formats[:4]
        ])

        # Platform-specific extras
        extras = self._platform_extras(source)

        quality_color = (
            "#22c55e" if source.quality_score >= 7.5 else
            "#f59e0b" if source.quality_score >= 5.0 else
            "#ef4444"
        )

        thumbnail_html = (
            f'<img src="{source.thumbnail_url}" style="width:100%;height:140px;'
            f'object-fit:cover;border-radius:6px 6px 0 0;" />'
            if source.thumbnail_url else ""
        )

        html = f"""
<div style="border:1px solid #e5e7eb;border-radius:8px;margin:8px 0;
            font-family:Arial,sans-serif;overflow:hidden;max-width:480px;">
  {thumbnail_html}
  <div style="padding:12px;">
    <div style="display:flex;justify-content:space-between;align-items:flex-start;">
      <span style="font-size:11px;color:#6b7280;text-transform:uppercase;
                   letter-spacing:0.5px;">{icon} {source.source_platform}</span>
      <span style="background:{quality_color};color:white;padding:2px 8px;
                   border-radius:12px;font-size:12px;font-weight:bold;">
        {source.quality_score:.1f}/10
      </span>
    </div>
    <h3 style="margin:6px 0;font-size:14px;line-height:1.4;color:#111827;">
      {source.title[:80]}{'…' if len(source.title) > 80 else ''}
    </h3>
    <p style="margin:4px 0;font-size:12px;color:#374151;line-height:1.5;">
      {source.summary[:200]}{'…' if len(source.summary) > 200 else ''}
    </p>
    <div style="margin:8px 0;">{format_badges}</div>
    <div style="display:flex;justify-content:space-between;
                font-size:11px;color:#6b7280;margin:4px 0;">
      <span>Difficulty: {stars}</span>
      <span>{'🔓 Open' if source.open_access else '🔒 Restricted'}</span>
    </div>
    {extras}
    <div style="margin-top:10px;">{access_links}</div>
  </div>
</div>"""
        return html

    def _platform_extras(self, source: Source) -> str:
        """Platform-specific metadata rows."""
        extras = []

        if source.stars is not None:
            extras.append(f"⭐ {source.stars:,} stars")
        if source.views is not None:
            extras.append(f"👁 {source.views:,} views")
        if source.downloads is not None:
            extras.append(f"⬇ {source.downloads:,} downloads")
        if source.duration_seconds:
            mins = source.duration_seconds // 60
            extras.append(f"⏱ {mins} min")
        if source.page_count:
            extras.append(f"📃 {source.page_count} pages")
        if source.citation_count:
            extras.append(f"📚 {source.citation_count} citations")

        if not extras:
            return ""

        items = " · ".join(extras)
        return f'<div style="font-size:11px;color:#6b7280;margin:4px 0;">{items}</div>'