v1 of data fetching

Code/python/main.py

@@ -0,0 +1,42 @@
+import typer
+
+app = typer.Typer()
+
+
+@app.command()
+def fetch(file: str, delete_ignore: bool = False):
+    from pathlib import Path
+    from adsbpy.fetch import fetch_lines
+
+    IGNORE_FILE = Path("adsbpy/.ignore")
+    if delete_ignore and IGNORE_FILE.exists():
+        print(f"Deleting ignore file at {IGNORE_FILE}")
+        IGNORE_FILE.unlink()
+    ignore_list = []
+    if IGNORE_FILE.exists():
+        print(f"Found ignore file at {IGNORE_FILE}")
+        with open(IGNORE_FILE) as f:
+            ignore_list = [line.strip() for line in f.readlines() if line.strip()]
+    else:
+        print("No ignore file found, starting fresh.")
+        IGNORE_FILE.parent.mkdir(parents=True, exist_ok=True)
+        IGNORE_FILE.touch()
+    
+    with open(file) as f:
+        lines = f.readlines()
+    lines = [line for line in lines if not line.strip() in ignore_list]
+    for line in lines:
+        try:
+            fetch_lines([line])
+        except KeyboardInterrupt:
+            print("Interrupted by user.")
+            break
+        else:
+            ignore_list.append(line.strip())
+            with open(IGNORE_FILE, "a") as f:
+                f.write(line)
+    print("Done.")
+
+
+if __name__ == "__main__":
+    app()