from .lineage_model import CodexEntry, SegmentLineage


def summarize_lineage(entry: CodexEntry) -> str:
    lines = []

    lines.append("=" * 70)
    lines.append("CODEX LINEAGE REPORT")
    lines.append("=" * 70)
    lines.append("")

    lines.append("[Source Information]")
    lines.append(f"  File: {entry.source_file}")
    lines.append(f"  Type: {entry.source_type}")
    lines.append(f"  Version: {entry.version}")
    lines.append("")

    lines.append("[Epoch]")
    lines.append(f"  Major: v{entry.epoch.major}")
    if entry.epoch.minor > 0:
        lines.append(f"  Minor: {entry.epoch.minor}")
    lines.append(f"  Stability: {entry.epoch.stability}")
    lines.append("")

    lines.append("[Contributor]")
    lines.append(f"  Name: {entry.contributor.name}")
    lines.append(f"  Contributions: {entry.contributor.contribution_count}")
    lines.append("")

    lines.append("[Segments]")
    lines.append(f"  Total: {len(entry.segments)}")
    for seg in entry.segments:
        lines.append(f"    - {describe_segment(seg)}")
    lines.append("")

    if entry.timestamp:
        lines.append("[Metadata]")
        lines.append(f"  Timestamp: {entry.timestamp}")
        lines.append("")

    lines.append(f"Origin: {entry.origin}")
    lines.append("=" * 70)

    return "\n".join(lines)


def describe_segment(segment: SegmentLineage) -> str:
    return f"{segment.segment_id}: lines {segment.start_line}-{segment.end_line} ({segment.start_byte}-{segment.end_byte} bytes)"