from typing import Dict, Any

from .lineage_model import CodexEntry, SegmentLineage, EpochInfo, ContributorInfo
from .epoch_mapper import parse_epoch
from .contributor_index import register_contributor


def resolve_lineage(manifest: Dict[str, Any]) -> CodexEntry:
    source_file = manifest.get("source_file", "unknown")
    source_type = manifest.get("source_type", ".py")
    version = manifest.get("version", "1.0.0")
    origin = manifest.get("origin", "unknown")
    timestamp = manifest.get("timestamp")

    epoch_str = manifest.get("epoch", "v1")
    epoch = parse_epoch(str(epoch_str))

    contributor_name = manifest.get("contributor", "unknown")
    contributor = register_contributor(contributor_name)

    segments = []
    codex_lineage = manifest.get("codex_lineage", {})
    segment_list = codex_lineage.get("segments", [])

    for seg in segment_list:
        segment = SegmentLineage(
            segment_id=seg.get("id", "unknown"),
            start_line=seg.get("start", 0),
            end_line=seg.get("end", 0),
            start_byte=seg.get("start_byte", 0),
            end_byte=seg.get("end_byte", 0)
        )
        segments.append(segment)

    return CodexEntry(
        source_file=source_file,
        source_type=source_type,
        version=version,
        origin=origin,
        epoch=epoch,
        contributor=contributor,
        segments=segments,
        timestamp=timestamp
    )