import re
from typing import Any

PLACEHOLDER_RE = re.compile(
    r"\{\{\{\{IMAGE:(.*?)\}\}\}\}|\{\{IMAGE:(.*?)\}\}",
    re.DOTALL,
)


def parse_image_placeholders(content: str, max_images: int) -> list[dict[str, Any]]:
    items: list[dict[str, Any]] = []
    for match in PLACEHOLDER_RE.finditer(content or ""):
        description = (match.group(1) or match.group(2) or "").strip()
        if not description:
            continue
        items.append(
            {
                "index": len(items),
                "description": description,
                "placeholder": match.group(0),
                "start_offset": match.start(),
            }
        )
        if len(items) >= max_images:
            break
    return items


def build_initial_image_assets(
    placeholders: list[dict[str, Any]],
    provider: str,
    style: str,
    size: str,
    now_iso: str,
) -> list[dict[str, Any]]:
    return [
        {
            "index": item["index"],
            "placeholder": item["placeholder"],
            "description": item["description"],
            "prompt": None,
            "url": None,
            "status": "pending",
            "provider": provider,
            "style": style,
            "size": size,
            "error": None,
            "created_at": now_iso,
            "updated_at": now_iso,
        }
        for item in placeholders
    ]