Test Excel endpoint

Code/Tools/Service/Dockerfile

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+FROM python:3.12-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY main.py .
+
+EXPOSE 8000
+
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]

Code/Tools/Service/main.py

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+"""
+Generic Excel API Service
+
+A FastAPI service for reading Excel files (.xlsx).
+All file paths are relative to /data/ mount.
+
+Endpoints:
+- GET /health - Health check
+- GET /excel/sheets - List all sheet names
+- GET /excel/schema - Get column headers
+- GET /excel/read - Read all rows
+- GET /excel/row/{row_num} - Get specific row (1-indexed)
+"""
+
+from fastapi import FastAPI, HTTPException, Query
+from pydantic import BaseModel
+from pathlib import Path
+from typing import Optional
+from openpyxl import load_workbook
+import os
+
+app = FastAPI(
+    title="JingTian Tools Service",
+    description="Generic Excel API for reading xlsx files",
+    version="0.2.0",
+)
+
+DATA_ROOT = Path(os.getenv("DATA_ROOT", "/data"))
+
+
+def get_workbook(file_path: str):
+    """Load workbook from file path relative to DATA_ROOT."""
+    full_path = DATA_ROOT / file_path
+    if not full_path.exists():
+        raise HTTPException(status_code=404, detail=f"File not found: {file_path}")
+    if not full_path.suffix.lower() == ".xlsx":
+        raise HTTPException(status_code=400, detail="Only .xlsx files supported")
+    try:
+        return load_workbook(full_path, read_only=True, data_only=True)
+    except Exception as e:
+        raise HTTPException(
+            status_code=500, detail=f"Failed to open workbook: {str(e)}"
+        )
+
+
+def get_sheet(wb, sheet_name: str):
+    """Get sheet by name."""
+    if sheet_name not in wb.sheetnames:
+        raise HTTPException(
+            status_code=404,
+            detail=f"Sheet '{sheet_name}' not found. Available: {wb.sheetnames}",
+        )
+    return wb[sheet_name]
+
+
+def cell_to_str(cell_value) -> str:
+    """Convert cell value to string, empty string for None."""
+    if cell_value is None:
+        return ""
+    return str(cell_value)
+
+
+@app.get("/health")
+async def health():
+    return {"status": "healthy", "service": "tools", "version": "0.2.0"}
+
+
+@app.get("/excel/sheets")
+async def list_sheets(
+    file_path: str = Query(..., description="Path to xlsx file relative to /data/"),
+):
+    """List all sheet names in the workbook."""
+    wb = get_workbook(file_path)
+    sheets = wb.sheetnames
+    wb.close()
+    return {"file_path": file_path, "sheets": sheets, "count": len(sheets)}
+
+
+@app.get("/excel/schema")
+async def get_schema(
+    file_path: str = Query(..., description="Path to xlsx file relative to /data/"),
+    sheet_name: str = Query(..., description="Sheet name to read"),
+    header_row: int = Query(1, description="Row number containing headers (1-indexed)"),
+):
+    """Get column headers from the specified sheet."""
+    wb = get_workbook(file_path)
+    ws = get_sheet(wb, sheet_name)
+
+    headers = []
+    for cell in ws[header_row]:
+        headers.append(cell_to_str(cell.value))
+
+    wb.close()
+    return {
+        "file_path": file_path,
+        "sheet_name": sheet_name,
+        "header_row": header_row,
+        "columns": headers,
+        "column_count": len(headers),
+    }
+
+
+@app.get("/excel/read")
+async def read_all(
+    file_path: str = Query(..., description="Path to xlsx file relative to /data/"),
+    sheet_name: str = Query(..., description="Sheet name to read"),
+    header_row: int = Query(1, description="Row number containing headers (1-indexed)"),
+    start_row: Optional[int] = Query(
+        None,
+        description="Start reading from this row (1-indexed, defaults to header_row + 1)",
+    ),
+    limit: Optional[int] = Query(None, description="Max rows to return"),
+):
+    """Read all rows from the specified sheet."""
+    wb = get_workbook(file_path)
+    ws = get_sheet(wb, sheet_name)
+
+    # Get headers
+    headers = [cell_to_str(cell.value) for cell in ws[header_row]]
+
+    # Determine data start row
+    data_start = start_row if start_row else header_row + 1
+
+    # Read rows
+    rows = []
+    row_count = 0
+    for row_num, row in enumerate(ws.iter_rows(min_row=data_start), start=data_start):
+        # Stop if limit reached
+        if limit and row_count >= limit:
+            break
+
+        # Skip completely empty rows
+        values = [cell_to_str(cell.value) for cell in row]
+        if all(v == "" for v in values):
+            continue
+
+        # Build row dict with headers as keys
+        row_data = {"_row_num": row_num}
+        for i, header in enumerate(headers):
+            if i < len(values):
+                key = header if header else f"_col_{i + 1}"
+                row_data[key] = values[i]
+
+        rows.append(row_data)
+        row_count += 1
+
+    wb.close()
+    return {
+        "file_path": file_path,
+        "sheet_name": sheet_name,
+        "columns": headers,
+        "rows": rows,
+        "row_count": len(rows),
+    }
+
+
+@app.get("/excel/row/{row_num}")
+async def get_row(
+    row_num: int,
+    file_path: str = Query(..., description="Path to xlsx file relative to /data/"),
+    sheet_name: str = Query(..., description="Sheet name to read"),
+    header_row: int = Query(1, description="Row number containing headers (1-indexed)"),
+):
+    """Get a specific row by row number (1-indexed)."""
+    if row_num < 1:
+        raise HTTPException(status_code=400, detail="Row number must be >= 1")
+
+    wb = get_workbook(file_path)
+    ws = get_sheet(wb, sheet_name)
+
+    # Get headers
+    headers = [cell_to_str(cell.value) for cell in ws[header_row]]
+
+    # Get the specific row
+    try:
+        row = ws[row_num]
+    except Exception:
+        wb.close()
+        raise HTTPException(status_code=404, detail=f"Row {row_num} not found")
+
+    values = [cell_to_str(cell.value) for cell in row]
+
+    # Build row dict
+    row_data = {"_row_num": row_num}
+    for i, header in enumerate(headers):
+        if i < len(values):
+            key = header if header else f"_col_{i + 1}"
+            row_data[key] = values[i]
+
+    wb.close()
+    return {"file_path": file_path, "sheet_name": sheet_name, "row": row_data}
+
+
+# Future endpoints (Phase 2 & 3)
+# POST /excel/row - Add new row
+# PUT /excel/row/{row_num} - Update row
+# DELETE /excel/row/{row_num} - Delete row
+# POST /excel/column - Add column
+# POST /excel/format - Apply formatting
+# POST /excel/create - Create new workbook

Code/Tools/Service/requirements.txt

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+fastapi==0.115.0
+uvicorn==0.30.6
+openpyxl==3.1.5
+pydantic==2.9.0