#!/usr/bin/env python3
"""Validate core romance data files."""

from __future__ import annotations

import json
import sys
from pathlib import Path


ROOT = Path(__file__).resolve().parents[1]
DATA = ROOT / "data"


def load_json(path: Path) -> dict:
    with path.open("r", encoding="utf-8") as handle:
        return json.load(handle)


def fail(message: str) -> None:
    print(f"ERROR: {message}", file=sys.stderr)
    raise SystemExit(1)


def main() -> None:
    characters_doc = load_json(DATA / "characters.json")
    locations_doc = load_json(DATA / "locations.json")
    progression_doc = load_json(DATA / "progression.json")

    minimum_age = characters_doc["content_rules"]["minimum_age"]
    locations = {location["id"] for location in locations_doc["locations"]}
    character_ids: set[str] = set()

    for character in characters_doc["characters"]:
        character_id = character["id"]
        if character_id in character_ids:
            fail(f"duplicate character id: {character_id}")
        character_ids.add(character_id)

        if character["age"] < minimum_age:
            fail(
                f"{character['display_name']} is {character['age']}; "
                f"minimum age is {minimum_age}"
            )

        for location_id in character["preferred_locations"]:
            if location_id not in locations:
                fail(f"{character_id} references missing preferred location {location_id}")

        first_location = character["first_encounter"]["location"]
        if first_location not in locations:
            fail(f"{character_id} references missing first encounter location {first_location}")

        event_stages = []
        for event in character["date_events"]:
            event_stages.append(event["stage"])
            event_location = event["location"]
            if event_location not in locations:
                fail(f"{character_id} references missing date location {event_location}")

        if event_stages != [1, 2, 3]:
            fail(f"{character_id} date event stages must be [1, 2, 3]")

        for hook in character["adult_event_hooks"]:
            flags = set(hook["required_flags"])
            if "consent_confirmed" not in flags:
                fail(f"{character_id} adult event hook lacks consent_confirmed")
            if "lovers" not in flags:
                fail(f"{character_id} adult event hook lacks lovers flag")

    adult_requirements = progression_doc["adult_event_requirements"]
    if adult_requirements["minimum_character_age"] != minimum_age:
        fail("progression minimum age does not match character content rules")

    print(
        "Validated "
        f"{len(character_ids)} characters, "
        f"{len(locations)} locations, "
        f"{len(progression_doc['relationship_stages'])} relationship stages."
    )


if __name__ == "__main__":
    main()