"""PinMAP → PinList converter

Usage:
  python main.py              # Interactive file selection
  python main.py input.xls    # Specify file via command line
"""

import sys
import os


def build_output_path(input_path: str) -> str:
    """Generate output path: {original_filename}_PinList.xlsx"""
    base, _ = os.path.splitext(input_path)
    return f"{base}_PinList.xlsx"


def main():
    # ── imports (local to avoid circular issues) ────────────────
    from file_selector import select_file
    from xls_reader import read_excel_cells  # auto-detects .xls
    from xlsx_reader import read_excel_cells as read_xlsx_cells
    from pinmap_parser import parse_pinmap
    from validator import validate_pinmap
    from pinlist_generator import generate_pinlist
    from xlsx_writer import write_xlsx
    from models import FileFormatError, StructureError

    # ── 1. File selection ───────────────────────────────────────
    if len(sys.argv) > 1:
        filepath = sys.argv[1]
    else:
        filepath = select_file()

    if not filepath:
        print("未选择文件，退出。")
        return

    # ── 2. Read Excel ───────────────────────────────────────────
    try:
        if filepath.lower().endswith('.xlsx'):
            cells = read_xlsx_cells(filepath)
        else:
            cells = read_excel_cells(filepath)
    except Exception as e:
        print(f"[FATAL] 文件读取失败: {e}")
        return

    # ── 3. Parse PinMAP ─────────────────────────────────────────
    try:
        pinmap = parse_pinmap(cells)
        print(f"[INFO] 解析完成: {pinmap.width}x{pinmap.height} 方形，共 {len(pinmap.pins)} 个Pin")
        print(f"[INFO] 封装信息: {pinmap.package_info}")
    except (FileFormatError, StructureError) as e:
        print(f"[FATAL] 结构错误: {e}")
        return

    # ── 4. Validate ─────────────────────────────────────────────
    validation = validate_pinmap(pinmap)

    # Print errors
    if validation.errors:
        print(f"\n[ERROR] 发现 {len(validation.errors)} 个错误:")
        for err in validation.errors:
            print(f"  - {err.message}: {err.details}")
        print("\n转换终止，请修正PinMAP文件后重试。")
        return

    # Print warnings (non-fatal — continue processing)
    if validation.warnings:
        print(f"\n[WARN] 发现 {len(validation.warnings)} 个警告:")
        for warn in validation.warnings:
            print(f"  - {warn.message}: {warn.details}")

    # ── 5. Generate PinList ─────────────────────────────────────
    pinlist = generate_pinlist(pinmap, validation)

    # ── 6. Write XLSX ───────────────────────────────────────────
    output_path = build_output_path(filepath)
    try:
        data = {}
        data['A1'] = pinlist.package_info
        for i, (pin_name, pin_num) in enumerate(pinlist.rows):
            row = i + 2  # data rows start at row 2
            data[f'A{row}'] = pin_name
            data[f'B{row}'] = str(pin_num)

        write_xlsx(data, output_path)
        print(f"\n[SUCCESS] 转换完成！输出文件: {output_path}")
        print(f"  - 封装信息: {pinlist.package_info}")
        print(f"  - Pin数量: {len(pinlist.rows)}")
    except Exception as e:
        print(f"[FATAL] 输出失败: {e}")
        return


if __name__ == '__main__':
    main()