#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""将青柳隷書字体中的文字转换为 SVG 路径并生成 logo"""

from fontTools.ttLib import TTFont
from fontTools.ttLib.tables import _h_m_t_x, _g_a_s_p
import os

# 修补表解析
original_hmtx = _h_m_t_x.table__h_m_t_x.decompile
def patched_hmtx(self, data, ttFont):
    try: return original_hmtx(self, data, ttFont)
    except: self.metrics = {}
_h_m_t_x.table__h_m_t_x.decompile = patched_hmtx

original_gasp = _g_a_s_p.table__g_a_s_p.decompile
def patched_gasp(self, data, ttFont):
    try: return original_gasp(self, data, ttFont)
    except: self.gaspRanges = {}
_g_a_s_p.table__g_a_s_p.decompile = patched_gasp

def get_glyph_path(font, char):
    """获取字符的 SVG 路径"""
    cmap = font.getBestCmap()
    codepoint = ord(char)
    
    if codepoint not in cmap:
        return None, None
    
    glyph_name = cmap[codepoint]
    glyf_table = font['glyf']
    glyph = glyf_table[glyph_name]
    hmtx = font['hmtx']
    advance_width, lsb = hmtx[glyph_name]
    
    try:
        coords, endPts, flags = glyph.getCoordinates(glyf_table)
    except:
        return None, None
    
    path_parts = []
    start_idx = 0
    
    for end_pt in endPts:
        contour_coords = coords[start_idx:end_pt + 1]
        if len(contour_coords) > 0:
            path_parts.append(f"M {contour_coords[0][0]:.2f} {-contour_coords[0][1]:.2f}")
            for i in range(1, len(contour_coords)):
                x, y = contour_coords[i]
                path_parts.append(f"L {x:.2f} {-y:.2f}")
            path_parts.append("Z")
        start_idx = end_pt + 1
    
    return " ".join(path_parts), {'advance': advance_width, 'lsb': lsb}

# 加载字体
font = TTFont('public/fonts/AoyagiReisho.ttf')

chars = ['睿', '新', '致', '遠']
glyphs_data = []

for char in chars:
    path, metrics = get_glyph_path(font, char)
    if path and metrics:
        glyphs_data.append({'char': char, 'path': path, 'metrics': metrics})

font.close()

# 生成主标题 SVG 路径
scale = 48 / 1000
total_width = sum(g['metrics']['advance'] for g in glyphs_data) * scale

svg_title_paths = []
x_offset = 0
for g in glyphs_data:
    svg_title_paths.append(f'''    <g transform="translate({x_offset:.2f}, 0) scale({scale})">
      <path d="{g['path']}" fill="currentColor"/>
    </g>''')
    x_offset += g['metrics']['advance'] * scale

# 生成印章内文字 (较小尺寸)
scale_seal = 26 / 1000

# 睿新
svg_seal_line1 = []
x_offset = 0
for char in ['睿', '新']:
    g = next((x for x in glyphs_data if x['char'] == char), None)
    if g:
        svg_seal_line1.append(f'''      <g transform="translate({x_offset:.2f}, 0) scale({scale_seal})">
        <path d="{g['path']}" fill="white"/>
      </g>''')
        x_offset += g['metrics']['advance'] * scale_seal

# 致遠
svg_seal_line2 = []
x_offset = 0
for char in ['致', '遠']:
    g = next((x for x in glyphs_data if x['char'] == char), None)
    if g:
        svg_seal_line2.append(f'''      <g transform="translate({x_offset:.2f}, 0) scale({scale_seal})">
        <path d="{g['path']}" fill="white"/>
      </g>''')
        x_offset += g['metrics']['advance'] * scale_seal

# 计算印章文字居中偏移
line1_width = sum(g['metrics']['advance'] for g in glyphs_data if g['char'] in ['睿', '新']) * scale_seal
line2_width = sum(g['metrics']['advance'] for g in glyphs_data if g['char'] in ['致', '遠']) * scale_seal
seal_center = 43  # 印章中心 x 坐标
line1_x = seal_center - line1_width / 2
line2_x = seal_center - line2_width / 2

# 生成完整 SVG
svg_content = f'''<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 480 120" width="480" height="120">
  <defs>
    <!-- 印章纹理滤镜 -->
    <filter id="sealTexture" x="0%" y="0%" width="100%" height="100%">
      <feTurbulence type="fractalNoise" baseFrequency="0.1" numOctaves="3" result="noise"/>
      <feDisplacementMap in="SourceGraphic" in2="noise" scale="2" xChannelSelector="R" yChannelSelector="G"/>
    </filter>
  </defs>

  <!-- 红色印章 - 手绘不规则风格 -->
  <g transform="translate(12, 12)">
    <!-- 印章外框 - 不规则手绘路径 -->
    <path d="M8,2 
             C25,-2 45,-2 72,3 
             C82,5 85,12 84,25 
             C83,40 85,55 84,70 
             C83,82 78,88 65,89 
             C45,91 25,90 10,88 
             C2,86 -2,78 1,65 
             C3,50 2,35 1,20 
             C0,10 3,4 8,2 Z" 
          fill="#C41E3A"/>
    <!-- 印章内框 - 手绘风格 -->
    <path d="M14,10 
             C28,8 55,8 72,12 
             C78,14 79,20 78,30 
             C77,45 78,60 77,72 
             C76,80 72,84 62,85 
             C45,86 28,85 16,83 
             C10,82 8,76 9,65 
             C10,50 9,35 8,22 
             C7,15 10,11 14,10 Z" 
          fill="none" stroke="#fff" stroke-width="1.5" opacity="0.5"/>
    <!-- 睿新 - 书法字体路径 -->
    <g transform="translate({line1_x:.2f}, 38)">
{chr(10).join(svg_seal_line1)}
    </g>
    <!-- 致遠 - 书法字体路径 -->
    <g transform="translate({line2_x:.2f}, 70)">
{chr(10).join(svg_seal_line2)}
    </g>
  </g>

  <!-- 公司名称 -->
  <g transform="translate(110, 60)">
    <!-- 睿新致遠 - 书法字体路径 -->
    <g transform="translate(0, 0)">
{chr(10).join(svg_title_paths)}
    </g>
    <!-- NOVALON - 英文字体 -->
    <text x="24" y="42" font-family="Arial, sans-serif" font-size="14.5" font-weight="500" fill="currentColor" letter-spacing="10.5">NOVALON</text>
  </g>
</svg>'''

# 写入文件
with open('public/logo.svg', 'w', encoding='utf-8') as f:
    f.write(svg_content)

print("✅ 已生成 public/logo.svg")

# 生成白色版本 (logo-white.svg)
svg_white = svg_content.replace('fill="#C41E3A"', 'fill="currentColor"')
with open('public/logo-white.svg', 'w', encoding='utf-8') as f:
    f.write(svg_white)

print("✅ 已生成 public/logo-white.svg")
print(f"\n标题总宽度: {total_width:.2f}px")