import os
from pathlib import Path
import json

areas = {'ATA_MV', 'BRA_SP', 'CHN_WS', 'ESP_EH', 'FIN_LM', 'GER_BN', 'IDN_SV', 
         'KAZ_AC', 'KSA_WA', 'NAM_HF', 'NZL_KP', 'PHL_TA', 'USA_GC'}

data_path = Path("/home/sabrina/Documents/Tese/05_Dataset/MatchGeo-DEM-v1/data/")

print("=" * 80)
print("MatchGeo-DEM Directory Size Report")
print("=" * 80)
print(f"{'City':<12} {'Tiles':>8} {'Merged (MB)':>12} {'Tiles (MB)':>12} {'Total (MB)':>12} {'Total (GB)':>10}")
print("-" * 80)

total_size = 0
total_tiles = 0
results = {}

for location in sorted(areas):
    loc_path = data_path / location

    if not loc_path.exists():
        print(f"{location:<12} {'N/A':>8} {'N/A':>12} {'N/A':>12} {'N/A':>12} {'N/A':>10}")
        continue

    # Count tiles
    tiles_dir = loc_path / "tiles"
    n_tiles = 0
    tiles_size = 0
    if tiles_dir.exists():
        for f in tiles_dir.iterdir():
            if f.suffix == '.tif':
                n_tiles += 1
                tiles_size += f.stat().st_size

    # Merged file size
    merged_file = loc_path / f"{location}.tif"
    merged_size = merged_file.stat().st_size if merged_file.exists() else 0

    # Also check fixed file
    fixed_file = loc_path / f"{location}.fixed.tif"
    if fixed_file.exists():
        merged_size = max(merged_size, fixed_file.stat().st_size)

    # Total size
    city_total = merged_size + tiles_size

    # Convert to MB/GB
    merged_mb = merged_size / (1024 * 1024)
    tiles_mb = tiles_size / (1024 * 1024)
    total_mb = city_total / (1024 * 1024)
    total_gb = city_total / (1024 * 1024 * 1024)

    print(f"{location:<12} {n_tiles:>8} {merged_mb:>12.1f} {tiles_mb:>12.1f} {total_mb:>12.1f} {total_gb:>10.2f}")

    total_size += city_total
    total_tiles += n_tiles

    results[location] = {
        "n_tiles": n_tiles,
        "merged_mb": round(merged_mb, 2),
        "tiles_mb": round(tiles_mb, 2),
        "total_mb": round(total_mb, 2),
        "total_gb": round(total_gb, 2)
    }

print("-" * 80)
total_mb = total_size / (1024 * 1024)
total_gb = total_size / (1024 * 1024 * 1024)
print(f"{'TOTAL':<12} {total_tiles:>8} {'---':>12} {'---':>12} {total_mb:>12.1f} {total_gb:>10.2f}")
print("=" * 80)

# Save to JSON
output_path = data_path.parent / "size_report.json"
with open(output_path, 'w') as f:
    json.dump({
        "per_city": results,
        "total_tiles": total_tiles,
        "total_mb": round(total_mb, 2),
        "total_gb": round(total_gb, 2)
    }, f, indent=2)

print(f"\n✅ Size report saved to: {output_path}")