"""Slide XML and slide relationship XML generation."""

from __future__ import annotations

# Import animation module (optional)
try:
    from pptx_animations import create_transition_xml, TRANSITIONS
    ANIMATIONS_AVAILABLE = True
except ImportError:
    ANIMATIONS_AVAILABLE = False
    TRANSITIONS = {}


def create_slide_xml_with_svg(
    slide_num: int,
    png_rid: str,
    svg_rid: str,
    width_emu: int,
    height_emu: int,
    transition: str | None = 'fade',
    transition_duration: float = 0.5,
    auto_advance: float | None = None,
    use_compat_mode: bool = True,
) -> str:
    """Create slide XML containing an SVG image.

    Args:
        slide_num: Slide number.
        png_rid: PNG fallback image relationship ID.
        svg_rid: SVG relationship ID.
        width_emu: Width in EMU.
        height_emu: Height in EMU.
        transition: Transition effect name.
        transition_duration: Transition duration in seconds.
        auto_advance: Auto-advance interval in seconds.
        use_compat_mode: Whether to use compatibility mode (PNG + SVG dual format).
    """
    transition_xml = ''
    if transition and ANIMATIONS_AVAILABLE:
        transition_xml = '\n' + create_transition_xml(
            effect=transition,
            duration=transition_duration,
            advance_after=auto_advance,
        )

    if use_compat_mode:
        blip_xml = f'''<a:blip r:embed="{png_rid}">
            <a:extLst>
              <a:ext uri="{{96DAC541-7B7A-43D3-8B79-37D633B846F1}}">
                <asvg:svgBlip xmlns:asvg="http://schemas.microsoft.com/office/drawing/2016/SVG/main" r:embed="{svg_rid}"/>
              </a:ext>
            </a:extLst>
          </a:blip>'''
    else:
        blip_xml = f'<a:blip r:embed="{svg_rid}"/>'

    return f'''<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<p:sld xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main"
       xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"
       xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main">
  <p:cSld>
    <p:spTree>
      <p:nvGrpSpPr>
        <p:cNvPr id="1" name=""/>
        <p:cNvGrpSpPr/>
        <p:nvPr/>
      </p:nvGrpSpPr>
      <p:grpSpPr>
        <a:xfrm>
          <a:off x="0" y="0"/>
          <a:ext cx="0" cy="0"/>
          <a:chOff x="0" y="0"/>
          <a:chExt cx="0" cy="0"/>
        </a:xfrm>
      </p:grpSpPr>
      <p:pic>
        <p:nvPicPr>
          <p:cNvPr id="2" name="SVG Image {slide_num}"/>
          <p:cNvPicPr>
            <a:picLocks noChangeAspect="1"/>
          </p:cNvPicPr>
          <p:nvPr/>
        </p:nvPicPr>
        <p:blipFill>
          {blip_xml}
          <a:stretch>
            <a:fillRect/>
          </a:stretch>
        </p:blipFill>
        <p:spPr>
          <a:xfrm>
            <a:off x="0" y="0"/>
            <a:ext cx="{width_emu}" cy="{height_emu}"/>
          </a:xfrm>
          <a:prstGeom prst="rect">
            <a:avLst/>
          </a:prstGeom>
        </p:spPr>
      </p:pic>
    </p:spTree>
  </p:cSld>
  <p:clrMapOvr>
    <a:masterClrMapping/>
  </p:clrMapOvr>{transition_xml}
</p:sld>'''


def create_slide_rels_xml(
    png_rid: str,
    png_filename: str,
    svg_rid: str,
    svg_filename: str,
    use_compat_mode: bool = True,
) -> str:
    """Create slide relationship file XML.

    Args:
        png_rid: PNG image relationship ID.
        png_filename: PNG filename.
        svg_rid: SVG relationship ID.
        svg_filename: SVG filename.
        use_compat_mode: Whether to use compatibility mode.
    """
    if use_compat_mode:
        return f'''<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
  <Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideLayout" Target="../slideLayouts/slideLayout1.xml"/>
  <Relationship Id="{png_rid}" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="../media/{png_filename}"/>
  <Relationship Id="{svg_rid}" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="../media/{svg_filename}"/>
</Relationships>'''
    else:
        return f'''<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
  <Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideLayout" Target="../slideLayouts/slideLayout1.xml"/>
  <Relationship Id="{svg_rid}" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="../media/{svg_filename}"/>
</Relationships>'''