#!/bin/bash

# Poster PDF Quality Check Script
# Usage: ./review_poster.sh poster.pdf

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Check if file argument provided
if [ $# -eq 0 ]; then
    echo -e "${RED}Error: No file specified${NC}"
    echo "Usage: $0 <poster.pdf>"
    exit 1
fi

POSTER_FILE="$1"

# Check if file exists
if [ ! -f "$POSTER_FILE" ]; then
    echo -e "${RED}Error: File '$POSTER_FILE' not found${NC}"
    exit 1
fi

echo -e "${BLUE}═══════════════════════════════════════════════${NC}"
echo -e "${BLUE}   Poster PDF Quality Check${NC}"
echo -e "${BLUE}═══════════════════════════════════════════════${NC}"
echo ""
echo -e "${GREEN}File:${NC} $POSTER_FILE"
echo ""

# Function to check if command exists
command_exists() {
    command -v "$1" >/dev/null 2>&1
}

# 1. Page Size Check
echo -e "${YELLOW}[1] Page Dimensions:${NC}"
if command_exists pdfinfo; then
    PAGE_SIZE=$(pdfinfo "$POSTER_FILE" 2>/dev/null | grep "Page size")
    if [ -n "$PAGE_SIZE" ]; then
        echo "    $PAGE_SIZE"
        
        # Extract dimensions and check common sizes
        WIDTH=$(echo "$PAGE_SIZE" | awk '{print $3}')
        HEIGHT=$(echo "$PAGE_SIZE" | awk '{print $5}')
        
        # Check against common poster sizes (approximate)
        if [ "$WIDTH" = "2384" ] && [ "$HEIGHT" = "3370" ]; then
            echo -e "    ${GREEN}✓ Detected: A0 Portrait${NC}"
        elif [ "$WIDTH" = "3370" ] && [ "$HEIGHT" = "2384" ]; then
            echo -e "    ${GREEN}✓ Detected: A0 Landscape${NC}"
        elif [ "$WIDTH" = "1684" ] && [ "$HEIGHT" = "2384" ]; then
            echo -e "    ${GREEN}✓ Detected: A1 Portrait${NC}"
        elif [ "$WIDTH" = "2592" ] && [ "$HEIGHT" = "3456" ]; then
            echo -e "    ${GREEN}✓ Detected: 36×48 inches Portrait${NC}"
        else
            echo -e "    ${YELLOW}⚠ Non-standard size detected${NC}"
        fi
    else
        echo -e "    ${RED}✗ Could not extract page size${NC}"
    fi
else
    echo -e "    ${YELLOW}⚠ pdfinfo not installed (install: brew install poppler or apt-get install poppler-utils)${NC}"
fi
echo ""

# 2. Page Count
echo -e "${YELLOW}[2] Page Count:${NC}"
if command_exists pdfinfo; then
    PAGE_COUNT=$(pdfinfo "$POSTER_FILE" 2>/dev/null | grep "Pages" | awk '{print $2}')
    if [ "$PAGE_COUNT" = "1" ]; then
        echo -e "    ${GREEN}✓ Single page (correct for poster)${NC}"
    else
        echo -e "    ${RED}✗ Multiple pages detected: $PAGE_COUNT${NC}"
        echo -e "    ${YELLOW}  Posters should be single page${NC}"
    fi
else
    echo -e "    ${YELLOW}⚠ pdfinfo not installed${NC}"
fi
echo ""

# 3. File Size
echo -e "${YELLOW}[3] File Size:${NC}"
if command_exists ls; then
    FILE_SIZE=$(ls -lh "$POSTER_FILE" | awk '{print $5}')
    FILE_SIZE_BYTES=$(ls -l "$POSTER_FILE" | awk '{print $5}')
    echo "    Size: $FILE_SIZE"
    
    # Check if file is too large for email
    if [ "$FILE_SIZE_BYTES" -gt 52428800 ]; then  # 50MB
        echo -e "    ${YELLOW}⚠ Large file (>50MB) - may need compression for email${NC}"
        echo -e "    ${BLUE}  Compress with: gs -sDEVICE=pdfwrite -dPDFSETTINGS=/printer -dNOPAUSE -dQUIET -dBATCH -sOutputFile=compressed.pdf $POSTER_FILE${NC}"
    elif [ "$FILE_SIZE_BYTES" -lt 1048576 ]; then  # 1MB
        echo -e "    ${YELLOW}⚠ Small file - check image quality${NC}"
    else
        echo -e "    ${GREEN}✓ Reasonable file size${NC}"
    fi
fi
echo ""

# 4. Font Embedding Check
echo -e "${YELLOW}[4] Font Embedding:${NC}"
if command_exists pdffonts; then
    echo "    Checking first 20 fonts..."
    FONT_OUTPUT=$(pdffonts "$POSTER_FILE" 2>/dev/null | head -21)
    echo "$FONT_OUTPUT" | tail -20 | while IFS= read -r line; do
        echo "    $line"
    done
    
    # Check for non-embedded fonts
    NON_EMBEDDED=$(echo "$FONT_OUTPUT" | tail -n +3 | awk '{if ($4 == "no") print $0}')
    if [ -n "$NON_EMBEDDED" ]; then
        echo -e "    ${RED}✗ Some fonts are NOT embedded (printing may fail)${NC}"
        echo -e "    ${BLUE}  Fix: Recompile with 'pdflatex -dEmbedAllFonts=true poster.tex'${NC}"
    else
        echo -e "    ${GREEN}✓ All fonts appear to be embedded${NC}"
    fi
else
    echo -e "    ${YELLOW}⚠ pdffonts not installed (install: brew install poppler or apt-get install poppler-utils)${NC}"
fi
echo ""

# 5. Image Quality Check
echo -e "${YELLOW}[5] Image Quality:${NC}"
if command_exists pdfimages; then
    IMAGE_COUNT=$(pdfimages -list "$POSTER_FILE" 2>/dev/null | tail -n +3 | wc -l | tr -d ' ')
    if [ "$IMAGE_COUNT" -gt 0 ]; then
        echo "    Found $IMAGE_COUNT image(s)"
        echo "    Image details:"
        pdfimages -list "$POSTER_FILE" 2>/dev/null | head -20
        
        # Note: DPI calculation would require page size knowledge
        echo -e "    ${BLUE}  Verify images are at least 300 DPI for printing${NC}"
        echo -e "    ${BLUE}  Formula: DPI = pixels / (inches in poster)${NC}"
    else
        echo -e "    ${YELLOW}⚠ No images found${NC}"
    fi
else
    echo -e "    ${YELLOW}⚠ pdfimages not installed (install: brew install poppler or apt-get install poppler-utils)${NC}"
fi
echo ""

# 6. Manual Checks Required
echo -e "${YELLOW}[6] Manual Visual Inspection Required:${NC}"
echo ""
echo -e "${BLUE}Layout and Spacing:${NC}"
echo "    [ ] Content fills entire page (no large white margins)"
echo "    [ ] Consistent spacing between columns"
echo "    [ ] Consistent spacing between blocks/sections"
echo "    [ ] All elements aligned properly"
echo "    [ ] No overlapping text or figures"
echo ""

echo -e "${BLUE}Typography:${NC}"
echo "    [ ] Title visible and large (72pt+)"
echo "    [ ] Section headers readable (48-72pt)"
echo "    [ ] Body text readable (24-36pt minimum)"
echo "    [ ] No text cutoff or running off edges"
echo "    [ ] Consistent font usage"
echo ""

echo -e "${BLUE}Visual Elements:${NC}"
echo "    [ ] All figures display correctly"
echo "    [ ] No pixelated or blurry images"
echo "    [ ] Figure captions present and readable"
echo "    [ ] Colors render as expected"
echo "    [ ] Logos display clearly"
echo "    [ ] QR codes visible and scannable"
echo ""

echo -e "${BLUE}Content:${NC}"
echo "    [ ] All sections present (Intro, Methods, Results, Conclusions)"
echo "    [ ] References included"
echo "    [ ] Contact information visible"
echo "    [ ] No placeholder text (Lorem ipsum, TODO, etc.)"
echo ""

# 7. Recommended Tests
echo -e "${YELLOW}[7] Recommended Next Steps:${NC}"
echo ""
echo -e "${BLUE}Test Print:${NC}"
echo "    • Print at 25% scale (A0→A4, 36×48→Letter)"
echo "    • Check readability from 2-3 feet"
echo "    • Verify colors printed accurately"
echo ""

echo -e "${BLUE}Digital Checks:${NC}"
echo "    • View at 100% zoom in PDF viewer"
echo "    • Test on different screens/devices"
echo "    • Verify QR codes work with scanner app"
echo ""

echo -e "${BLUE}Proofreading:${NC}"
echo "    • Spell-check all text"
echo "    • Verify author names and affiliations"
echo "    • Confirm all statistics and numbers"
echo "    • Ask colleague to review"
echo ""

# 8. Summary
echo -e "${BLUE}═══════════════════════════════════════════════${NC}"
echo -e "${BLUE}   Quality Check Complete${NC}"
echo -e "${BLUE}═══════════════════════════════════════════════${NC}"
echo ""
echo -e "Review the checks above and complete manual verification."
echo -e "For full checklist, see: ${BLUE}assets/poster_quality_checklist.md${NC}"
echo ""

exit 0