"""
server-26#102 — a scene is correlated on its OWN transcript, not the whole call.

_scene_transcript_text slices the segments a scene owns. It must never return
"" (an empty slice would let incident_correlator._build_context fall back to
the call doc's whole-call transcript, re-opening the leak in exactly the case
— bad indices — where it matters).
"""
from app.internal.intelligence import _scene_transcript_text

SEGS = [
    {"text": "structure fire, 12 Main"},
    {"text": "engine 4 responding"},
    {"text": "traffic stop, plate ABC"},
    {"text": "one occupant"},
]
WHOLE = "structure fire, 12 Main engine 4 responding traffic stop, plate ABC one occupant"


def test_scene_owns_a_subset_of_segments():
    assert _scene_transcript_text(WHOLE, SEGS, [0, 1], None) == "structure fire, 12 Main engine 4 responding"
    assert _scene_transcript_text(WHOLE, SEGS, [2, 3], None) == "traffic stop, plate ABC one occupant"


def test_corrected_text_wins_when_present():
    assert _scene_transcript_text(WHOLE, SEGS, [0], "cleaned up text") == "cleaned up text"


def test_no_segment_indices_falls_back_to_whole_call():
    # single-segment calls are never numbered by _build_transcript_block → null indices
    assert _scene_transcript_text(WHOLE, SEGS, None, None) == WHOLE
    assert _scene_transcript_text(WHOLE, None, [0, 1], None) == WHOLE


def test_out_of_range_or_nonint_indices_fall_back_never_empty():
    assert _scene_transcript_text(WHOLE, SEGS, [9, 10], None) == WHOLE          # all out of range
    assert _scene_transcript_text(WHOLE, SEGS, ["1", "2"], None) == WHOLE       # 1-based strings, rejected
    assert _scene_transcript_text(WHOLE, SEGS, [-1], None) == WHOLE            # negative
    # partial validity: keep what's in range
    assert _scene_transcript_text(WHOLE, SEGS, [3, 99], None) == "one occupant"