/**
 * 可配置的套路模板系统
 * 运营人员可以自定义每张图的布局和内容
 */

// ============================================================
// 默认套路配置（基于真实交付成品分析）
// ============================================================

const DEFAULT_MAIN_TEMPLATES = {
  // Main_01: 场景首图 + 卖点文字
  Main_01: {
    type: 'lifestyle_with_features',
    name: '场景首图+卖点',
    aspectRatio: '1:1',
    layout: {
      scene: 'left-center',      // 场景图位置
      title: 'center-bottom',    // 标题位置
      features: 'bottom-row'     // 卖点位置
    },
    config: {
      title: 'DESIGNED FOR COMFORTABLE RECOVERY',
      titleStyle: 'curved-banner',  // curved-banner | simple | none
      features: [
        { icon: 'egg', text: 'LIGHTER THAN AN EGG' },
        { icon: 'water', text: 'WATERPROOF & EASY WIPE' },
        { icon: 'cloud', text: 'BREATHABLE COTTON LINING' }
      ],
      background: 'warm-home'
    }
  },

  // Main_02: 白底平铺 + 局部放大（关键改进！）
  Main_02: {
    type: 'product_with_callouts',
    name: '白底平铺+细节放大',
    aspectRatio: '1:1',
    layout: {
      product: 'center',
      callouts: 'corners'  // 放大镜效果在角落
    },
    config: {
      title: 'DURABLE WATERPROOF PU LAYER',
      titlePosition: 'top',
      callouts: [
        { 
          position: 'bottom-left', 
          target: 'material-edge',
          label: 'DURABLE WATERPROOF PU LAYER',
          hasArrow: true
        },
        { 
          position: 'bottom-right', 
          target: 'neck-binding',
          label: 'DOUBLE-LAYER COMFORT',
          hasArrow: true
        }
      ],
      background: 'white'
    }
  },

  // Main_03: 功能调节展示
  Main_03: {
    type: 'feature_showcase',
    name: '功能调节展示',
    aspectRatio: '1:1',
    layout: {
      mainScene: 'left',
      featureCircles: 'right-column'
    },
    config: {
      title: 'ADJUSTABLE STRAP FOR A SECURE FIT',
      titlePosition: 'top-left',
      mainScene: {
        type: 'cat-wearing',
        background: 'lifestyle'
      },
      featureCircles: [
        { label: 'SECURE THE ADJUSTABLE BELLY STRAP', showDetail: 'velcro-close-up' },
        { label: 'ADJUST FOR A SNUG FIT', showDetail: 'full-product-view' }
      ],
      background: 'matching-color'  // 使用产品主色作为背景
    }
  },

  // Main_04: 多场景使用（4宫格）
  Main_04: {
    type: 'multi_scenario_grid',
    name: '多场景使用',
    aspectRatio: '1:1',
    layout: {
      grid: '2x2',
      captionPosition: 'below-each'
    },
    config: {
      scenarios: [
        { scene: 'standing', caption: '• HYGIENIC & EASY TO CLEAN', subtext: 'WATERPROOF OUTER LAYER' },
        { scene: 'eating', caption: '• UNRESTRICTED EATING/DRINKING', subtext: 'SPECIALLY DESIGNED OPENING' },
        { scene: 'playing', caption: '• REVERSIBLE WEAR', subtext: 'FLIP-OVER DESIGN' },
        { scene: 'sleeping', caption: '• 360° COMFORT', subtext: 'FREE MOVEMENT' }
      ],
      background: 'warm-beige'
    }
  },

  // Main_05: 尺寸图
  Main_05: {
    type: 'size_chart',
    name: '尺寸图',
    aspectRatio: '1:1',
    layout: {
      product: 'top-center',
      table: 'bottom'
    },
    config: {
      title: 'PRODUCT SIZE',
      measurements: ['NECK', 'WIDTH'],
      sizeChart: {
        XS: { neck: '5.6-6.8IN', depth: '3.2IN' },
        S: { neck: '7.2-8.4IN', depth: '4IN' },
        M: { neck: '8.8-10.4IN', depth: '5IN' },
        L: { neck: '10.8-12.4IN', depth: '6IN' },
        XL: { neck: '12.8-14.4IN', depth: '7IN' }
      },
      footer: 'NOTE: ALWAYS MEASURE YOUR PET\'S NECK BEFORE SELECTING A SIZE'
    }
  },

  // Main_06: 多角度展示
  Main_06: {
    type: 'multiple_angles',
    name: '多角度展示',
    aspectRatio: '1:1',
    layout: {
      images: 'side-by-side',
      divider: 'curved-line'
    },
    config: {
      angles: [
        { view: 'front', petType: 'cat' },
        { view: 'side', petType: 'cat' }
      ],
      background: 'warm-interior'
    }
  }
};

const DEFAULT_APLUS_TEMPLATES = {
  // APlus_01: 品牌横幅
  APlus_01: {
    type: 'brand_banner',
    name: '品牌横幅',
    aspectRatio: '3:2',
    config: {
      brandName: 'TOUCHDOG',
      productName: 'CAT SOFT CONE COLLAR',
      brandStyle: 'playful-curved',  // 品牌字体风格
      brandColor: '#E8A87C',  // 珊瑚色
      scene: 'cat-on-furniture',
      background: 'warm-home'
    }
  },

  // APlus_02: 对比图（关键改进！）
  APlus_02: {
    type: 'comparison',
    name: '对比图',
    aspectRatio: '3:2',
    layout: {
      left: 'our-product',
      right: 'competitor',
      center: 'none'  // 不要中间的产品图！
    },
    config: {
      leftSide: {
        label: 'OUR',
        labelBg: '#E8876C',
        checkmark: true,
        colorful: true,
        sellingPoints: [
          'CLOUD-LIGHT COMFORT',
          'WIDER & CLEARER',
          'FOLDABLE & PORTABLE'
        ]
      },
      rightSide: {
        label: 'OTHER',
        labelBg: '#808080',
        xmark: true,
        grayscale: true,
        weaknesses: [
          'HEAVY & BULKY',
          'BLOCKS VISION & MOVEMENT',
          'HARD TO STORE'
        ]
      },
      background: 'warm-beige'
    }
  },

  // APlus_03: 功能细节
  APlus_03: {
    type: 'feature_details',
    name: '功能细节',
    aspectRatio: '3:2',
    config: {
      title: 'ENGINEERED FOR UNCOMPROMISED COMFORT',
      detailImages: [
        { focus: 'inner-lining', caption: 'STURDY AND BREATHABLE', subtext: 'DURABLE AND COMFORTABLE' },
        { focus: 'wearing-with-size', caption: 'EASY TO CLEAN, STYLISH', subtext: 'AND ATTRACTIVE' },
        { focus: 'stitching-detail', caption: 'REINFORCED STITCHING', subtext: 'AND DURABLE FABRIC' }
      ],
      background: 'warm-beige'
    }
  },

  // APlus_04: 多场景横版
  APlus_04: {
    type: 'multi_scenario_horizontal',
    name: '多场景横版',
    aspectRatio: '3:2',
    config: {
      scenarios: [
        { scene: 'standing', caption: '• HYGIENIC & EASY TO CLEAN' },
        { scene: 'eating', caption: '• UNRESTRICTED EATING/DRINKING' },
        { scene: 'playing', caption: '• REVERSIBLE WEAR' },
        { scene: 'sleeping', caption: '• 360° COMFORT' }
      ]
    }
  },

  // APlus_05: 多角度横版
  APlus_05: {
    type: 'multiple_angles_horizontal',
    name: '多角度横版',
    aspectRatio: '3:2',
    config: {
      angles: ['front', 'side'],
      dividerStyle: 'curved'
    }
  },

  // APlus_06: 尺寸表横版
  APlus_06: {
    type: 'size_chart_horizontal',
    name: '尺寸表横版',
    aspectRatio: '3:2',
    config: {
      title: 'PRODUCT SIZE',
      layout: 'product-left-table-right'
    }
  }
};

// ============================================================
// 从配置生成Prompt的函数
// ============================================================

function generatePromptFromConfig(templateConfig, product, skuInfo) {
  const { type, config, layout } = templateConfig;
  
  // 基础产品描述
  const productDesc = product.goldenDescription || 'Pet recovery cone collar';
  
  switch (type) {
    case 'lifestyle_with_features':
      return generateLifestyleWithFeatures(productDesc, config, skuInfo);
    
    case 'product_with_callouts':
      return generateProductWithCallouts(productDesc, config, skuInfo);
    
    case 'feature_showcase':
      return generateFeatureShowcase(productDesc, config, skuInfo);
    
    case 'multi_scenario_grid':
      return generateMultiScenarioGrid(productDesc, config, skuInfo);
    
    case 'size_chart':
      return generateSizeChart(productDesc, config, skuInfo);
    
    case 'multiple_angles':
      return generateMultipleAngles(productDesc, config, skuInfo);
    
    case 'brand_banner':
      return generateBrandBanner(productDesc, config, skuInfo);
    
    case 'comparison':
      return generateComparison(productDesc, config, skuInfo);
    
    case 'feature_details':
      return generateFeatureDetails(productDesc, config, skuInfo);
    
    default:
      return generateGenericPrompt(productDesc, config, skuInfo);
  }
}

// ============================================================
// 各类型Prompt生成函数
// ============================================================

function generateLifestyleWithFeatures(productDesc, config, skuInfo) {
  return `
[AMAZON MAIN IMAGE - LIFESTYLE WITH FEATURE TEXT]

PRODUCT (MUST MATCH REFERENCE IMAGE EXACTLY):
${productDesc}

SCENE:
- Beautiful ${skuInfo.petType || 'cat'} wearing the product comfortably
- Warm, cozy home interior background (soft focus)
- Product clearly visible, occupies 50-60% of frame
- Pet looks comfortable and relaxed

TEXT OVERLAY REQUIREMENTS:
- ${config.titleStyle === 'curved-banner' ? 'CURVED BANNER in muted blue (#8BB8C4) across center' : 'SIMPLE TITLE at center-bottom'}
- TITLE TEXT: "${config.title}" in white, clean sans-serif font
- BOTTOM ROW: 3 feature boxes in rounded rectangles
${config.features.map((f, i) => `  - Box ${i+1}: "${f.text}" with ${f.icon} icon`).join('\n')}

STYLE:
- Professional Amazon product photography
- Warm color palette
- Clean, readable text
- Subtle paw print watermarks
- 8K quality, 1:1 aspect ratio

CRITICAL: Product must match reference image EXACTLY in shape, color, and material.
`.trim();
}

function generateProductWithCallouts(productDesc, config, skuInfo) {
  return `
[AMAZON MAIN IMAGE - PRODUCT WITH DETAIL CALLOUTS]

PRODUCT (MUST MATCH REFERENCE IMAGE EXACTLY):
${productDesc}

LAYOUT:
- TOP: Title "${config.title}" in dark green banner with white text
- CENTER: Product C-shape flat lay view on white/light background
- CALLOUT CIRCLES: Magnifying glass style detail views with arrows pointing to product

CALLOUT DETAILS:
${config.callouts.map(c => `- ${c.position.toUpperCase()}: Circular magnified view of ${c.target}
  Label: "${c.label}"
  Arrow pointing from circle to corresponding area on product`).join('\n')}

STYLE:
- Clean product photography with infographic elements
- Dark green (#2D4A3E) for title banner
- Thin lines/arrows connecting callouts to product
- Professional Amazon listing style
- 8K quality, 1:1 aspect ratio

CRITICAL: Product must show C-shaped opening clearly. Match reference image EXACTLY.
`.trim();
}

function generateFeatureShowcase(productDesc, config, skuInfo) {
  return `
[AMAZON MAIN IMAGE - FEATURE SHOWCASE]

PRODUCT (MUST MATCH REFERENCE IMAGE EXACTLY):
${productDesc}

LAYOUT:
- BACKGROUND: Solid color matching product main color (use product's primary color)
- TOP-LEFT: Large title "${config.title}" in dark text
- LEFT SIDE (60%): Main lifestyle scene - ${skuInfo.petType || 'cat'} wearing product, walking through doorway/arch
- RIGHT SIDE (40%): 2 feature detail circles stacked vertically

FEATURE CIRCLES:
${config.featureCircles.map((f, i) => `${i+1}. Circle showing: ${f.showDetail}
   Button/label below: "${f.label}"`).join('\n')}

STYLE:
- Lifestyle photography meets infographic
- Rounded rectangle buttons for labels
- Paw print decorations scattered on background
- Modern, clean design
- 8K quality, 1:1 aspect ratio

CRITICAL: Product color and shape must match reference image EXACTLY.
`.trim();
}

function generateMultiScenarioGrid(productDesc, config, skuInfo) {
  return `
[AMAZON MAIN IMAGE - MULTI-SCENARIO 2x2 GRID]

PRODUCT (MUST MATCH REFERENCE IMAGE EXACTLY):
${productDesc}

LAYOUT: 2x2 grid of scenes, each in rounded rectangle frame

${config.scenarios.map((s, i) => `SCENE ${i+1} (${['TOP-LEFT', 'TOP-RIGHT', 'BOTTOM-LEFT', 'BOTTOM-RIGHT'][i]}):
- ${skuInfo.petType || 'Cat'} ${s.scene} while wearing product
- Caption below: "${s.caption}"
- Subtext: "${s.subtext}"`).join('\n\n')}

BACKGROUND: Warm beige (#F5EDE4) with subtle paw print watermarks

STYLE:
- Each scene in rounded rectangle with slight shadow
- Captions in dark text, clean sans-serif
- Professional lifestyle photography
- 8K quality, 1:1 aspect ratio

CRITICAL: Product in ALL 4 scenes must be identical and match reference image.
`.trim();
}

function generateSizeChart(productDesc, config, skuInfo) {
  return `
[AMAZON MAIN IMAGE - SIZE CHART INFOGRAPHIC]

PRODUCT (MUST MATCH REFERENCE IMAGE EXACTLY):
${productDesc}

LAYOUT:
- TOP: Title "${config.title}" in bold dark text
- CENTER: Product flat lay with measurement arrows and labels
  - Arrow across neck opening: "NECK"
  - Arrow across width: "WIDTH"
- BOTTOM: Size chart table

SIZE CHART TABLE (clean, rounded corners):
| SIZE | NECK CIRCUMFERENCE | DEPTH |
${Object.entries(config.sizeChart).map(([size, dims]) => 
  `| ${size} | ${dims.neck} | ${dims.depth} |`).join('\n')}

FOOTER TEXT: "${config.footer}"

BACKGROUND: Warm beige with subtle paw prints

STYLE:
- Clean infographic design
- Table with alternating row colors
- Professional product photography
- 8K quality, 1:1 aspect ratio
`.trim();
}

function generateMultipleAngles(productDesc, config, skuInfo) {
  return `
[AMAZON MAIN IMAGE - MULTIPLE ANGLES]

PRODUCT (MUST MATCH REFERENCE IMAGE EXACTLY):
${productDesc}

LAYOUT:
- Split view with decorative curved divider in center
- LEFT: ${skuInfo.petType || 'Cat'} wearing product, ${config.angles[0].view} view
- RIGHT: Same ${skuInfo.petType || 'cat'} or similar, ${config.angles[1].view} view

SCENE:
- Warm home interior background
- Both pets look comfortable
- Product clearly visible from different angles

STYLE:
- Lifestyle photography
- Soft warm lighting
- Decorative curved line or wave between images
- NO text overlay
- 8K quality, 1:1 aspect ratio

CRITICAL: Product must be IDENTICAL in both views, matching reference image exactly.
`.trim();
}

function generateBrandBanner(productDesc, config, skuInfo) {
  return `
[AMAZON A+ BRAND BANNER - HORIZONTAL]

PRODUCT (MUST MATCH REFERENCE IMAGE EXACTLY):
${productDesc}

LAYOUT (970x600px aspect ratio):
- LEFT 40%: Brand text area with decorative elements
- RIGHT 60%: Lifestyle scene

LEFT SIDE:
- Brand name "${config.brandName}" in playful, slightly curved font
- Color: ${config.brandColor} (coral/salmon)
- Decorative paw prints around text
- Product name "${config.productName}" below in smaller gray text

RIGHT SIDE:
- ${skuInfo.petType || 'Cat'} wearing product on modern furniture
- Warm cozy interior background

STYLE:
- Professional Amazon A+ content
- Warm, inviting color palette
- 8K quality, ~1.6:1 aspect ratio
`.trim();
}

function generateComparison(productDesc, config, skuInfo) {
  const { leftSide, rightSide } = config;
  
  return `
[AMAZON A+ COMPARISON IMAGE - SPLIT SCREEN]

PRODUCT (MUST MATCH REFERENCE IMAGE EXACTLY):
${productDesc}

LAYOUT: Two-column comparison, NO center product image

LEFT SIDE (OUR PRODUCT):
- GREEN CHECKMARK icon at top
- "${leftSide.label}" label on ${leftSide.labelBg} background
- ${skuInfo.petType || 'Cat'} wearing OUR PRODUCT (must match reference exactly!)
- Cat looks HAPPY and comfortable
- FULL COLOR, warm tones
- Selling points in white text on colored background:
${leftSide.sellingPoints.map(p => `  • ${p}`).join('\n')}

RIGHT SIDE (COMPETITOR):
- RED X-MARK icon at top
- "${rightSide.label}" label on ${rightSide.labelBg} background
- ${skuInfo.petType || 'Cat'} wearing HARD PLASTIC transparent cone
- Cat looks SAD/uncomfortable
- GRAYSCALE/desaturated
- Weaknesses in gray text:
${rightSide.weaknesses.map(p => `  • ${p}`).join('\n')}

BACKGROUND: Warm beige (#F5EDE4) with paw print watermarks

STYLE:
- Clear visual contrast between sides
- Professional comparison layout
- Clean readable text
- 8K quality, ~1.6:1 aspect ratio

CRITICAL: 
- LEFT product must match reference image EXACTLY (our soft cone)
- RIGHT shows generic hard plastic cone (NOT our product)
- NO product image in the center
`.trim();
}

function generateFeatureDetails(productDesc, config, skuInfo) {
  return `
[AMAZON A+ FEATURE DETAILS - HORIZONTAL]

PRODUCT (MUST MATCH REFERENCE IMAGE EXACTLY):
${productDesc}

LAYOUT:
- TOP: Large title "${config.title}" in bold dark font
- MIDDLE: 3 detail images in rounded rectangles, evenly spaced

${config.detailImages.map((d, i) => `DETAIL ${i+1}:
- Focus: ${d.focus}
- Caption: "${d.caption}"
- Subtext: "${d.subtext}"`).join('\n\n')}

BACKGROUND: Warm beige (#F5EDE4) with subtle paw print watermarks

STYLE:
- Professional product detail photography
- Clean modern typography
- Rounded rectangle frames for each detail
- 8K quality, ~1.6:1 aspect ratio
`.trim();
}

function generateGenericPrompt(productDesc, config, skuInfo) {
  return `
[AMAZON PRODUCT IMAGE]

PRODUCT:
${productDesc}

REQUIREMENTS:
- Professional product photography
- Match reference image exactly
- High quality, clear details
- 8K resolution
`.trim();
}

// ============================================================
// 导出
// ============================================================

module.exports = {
  DEFAULT_MAIN_TEMPLATES,
  DEFAULT_APLUS_TEMPLATES,
  generatePromptFromConfig,
  
  // 生成所有12张图的Prompts
  generateAllPrompts: (product, skuInfo, customConfig = {}) => {
    const mainTemplates = { ...DEFAULT_MAIN_TEMPLATES, ...customConfig.main };
    const aplusTemplates = { ...DEFAULT_APLUS_TEMPLATES, ...customConfig.aplus };
    
    const prompts = [];
    
    // 主图6张
    for (const [id, template] of Object.entries(mainTemplates)) {
      prompts.push({
        id,
        name: template.name,
        aspectRatio: template.aspectRatio || '1:1',
        type: template.type,
        prompt: generatePromptFromConfig(template, product, skuInfo)
      });
    }
    
    // A+图6张
    for (const [id, template] of Object.entries(aplusTemplates)) {
      prompts.push({
        id,
        name: template.name,
        aspectRatio: template.aspectRatio || '3:2',
        type: template.type,
        prompt: generatePromptFromConfig(template, product, skuInfo)
      });
    }
    
    return prompts;
  }
};