feat: add miband bot application

tests/test_fds.py

@@ -0,0 +1,33 @@
+import struct
+
+from miband_tracker.fds import parse_all_day_sleep_bytes
+
+
+def test_parse_all_day_sleep_bytes_reads_hr_and_spo2_records() -> None:
+    blob = bytearray()
+    blob += struct.pack("<I", 1_700_000_000)
+    blob += bytes([12, 2, 0])
+    blob += bytes([0b00000000, 0b11000000])
+    blob += bytes([1])
+    blob += struct.pack("<I", 1_700_000_100)
+    blob += struct.pack("<I", 1_700_000_500)
+    blob += bytes([80, 90])
+    blob += struct.pack("<I", 120)
+    blob += struct.pack("<I", 400)
+    blob += struct.pack("<I", 1_700_000_090)
+    blob += struct.pack("<I", 1_700_000_520)
+    blob += struct.pack("<hhI", 60, 2, 1_700_000_100)
+    blob += bytes([61, 62])
+    blob += struct.pack("<hhI", 60, 2, 1_700_000_100)
+    blob += bytes([97, 98])
+
+    parsed = parse_all_day_sleep_bytes(bytes(blob))
+
+    assert parsed is not None
+    assert parsed["records"]["heart_rate"] == [(1_700_000_100, 61), (1_700_000_160, 62)]
+    assert parsed["records"]["spo2"] == [(1_700_000_100, 97), (1_700_000_160, 98)]
+
+
+def test_parse_all_day_sleep_bytes_rejects_malformed_payloads() -> None:
+    for blob in (b"", bytes(9), bytes(10), bytes(20)):
+        assert parse_all_day_sleep_bytes(blob) is None