#!/usr/bin/env python3
"""Render held ingestion drafts and correction proposals as an owner decision sheet."""

from __future__ import annotations

import argparse
import json
from pathlib import Path
from typing import Any


def render(items: list[dict[str, Any]]) -> str:
    sections = [
        "# GEWU owner review sheet",
        "",
        (
            "Mark one decision for each item and add a short rationale. This sheet records review "
            "intent only; it does not alter GEWU state or grant acceptance authority."
        ),
        "",
        (
            "For held drafts: choose keep held, request revision, or initiate the authorized owner "
            "challenge workflow. For corrections: choose approve for fresh owner workflow, request "
            "revision, or reject. Proposal base commits may be stale; every later action must "
            "context and re-evaluate the proposal."
        ),
        "",
    ]
    for index, item in enumerate(items, start=1):
        proposal = item.get("proposal", {})
        operations = proposal.get("operations", [])
        nodes = [operation["node"] for operation in operations if operation.get("node")]
        edges = [operation["edge"] for operation in operations if operation.get("edge")]
        node = nodes[0] if nodes else {}
        is_correction = item.get("source_stage") == "supersession"
        kind = "Correction proposal" if is_correction else "Policy-held draft"
        proposal_id = proposal.get("proposal_id", "unknown")
        revision = proposal.get("revision", "?")
        node_id = node.get("node_id", "not available")
        node_type = node.get("node_type", "unknown")
        sections.extend(
            [
                f"## {index}. {kind}: {node.get('title', proposal.get('proposal_id', 'Untitled'))}",
                "",
                f"- Proposal: `{proposal_id}` revision {revision}",
                f"- Current state: {item.get('storage_state', 'evaluated; needs-review')}",
                f"- Proposal base commit: `{proposal.get('base_commit', 'unknown')}`",
                f"- Node: `{node_id}` ({node_type})",
                f"- Summary: {node.get('summary', 'No summary recorded.')}",
                "",
                "### Claims and attached evidence",
                "",
            ]
        )
        claim_groups = [
            ("Claim", node.get("claims", [])),
            ("Assumption", node.get("assumptions", [])),
            ("Limitation", node.get("limitations", [])),
        ]
        if not any(claims for _, claims in claim_groups):
            sections.append("No node claim payload was included in this review item.")
            sections.append("")
        for group_label, claims in claim_groups:
            for claim in claims:
                sections.extend(
                    [
                        f"- **{group_label} {claim.get('claim_id', 'claim')}:** "
                        f"{claim.get('text', '')}"
                    ]
                )
                for evidence in claim.get("evidence", []):
                    locator = evidence.get("locator", {})
                    location = ", ".join(
                        f"{key}={locator[key]}"
                        for key in ("page", "block_id", "start", "end")
                        if key in locator
                    )
                    quote = evidence.get("quote", "").splitlines()
                    sections.append(
                        f"  - Evidence `{evidence.get('source_revision_id', '?')}` ({location}):"
                    )
                    sections.extend(f"    > {line}" for line in quote)
        for edge in edges:
            sections.append(
                f"- Supersession edge: `{edge.get('source', {}).get('id', '?')}` → `"
                f"{edge.get('target', {}).get('id', '?')}` "
                f"({edge.get('edge_type', 'relationship')})"
            )
        sections.extend(["", "### Owner decision", ""])
        if is_correction:
            sections.extend(
                [
                    "- [ ] Approve this replacement for the owner workflow "
                    "(fresh evaluation still required)",
                    "- [ ] Request revision",
                    "- [ ] Reject this correction",
                ]
            )
        else:
            sections.extend(
                [
                    "- [ ] Keep held; do not create an exception",
                    "- [ ] Request revision",
                    "- [ ] Initiate the authorized owner challenge workflow",
                ]
            )
        sections.extend(["- Rationale: ", "", "---", ""])
    return "\n".join(sections)


def main() -> None:
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("--input", type=Path, required=True)
    parser.add_argument("--output", type=Path, required=True)
    args = parser.parse_args()
    items = json.loads(args.input.read_text(encoding="utf-8"))
    if not isinstance(items, list) or len(items) != 19:
        parser.error("Expected the frozen 19-item held-draft and correction review packet")
    output = render(items)
    with args.output.open("x", encoding="utf-8") as stream:
        stream.write(output)
    print(json.dumps({"status": "created", "items": len(items), "output": str(args.output)}))


if __name__ == "__main__":
    main()