"""Extract todos from the latest inspiration digest + sync to todo API.
Supports multiple formats:
  - [ ] checkbox style
  - 1. **bold**: description (numbered list with bold prefix)
  - - **bold**: description (dash list with bold prefix)
"""
import json
import os
import re
import requests

DIGEST_DIR = os.path.expanduser("~/inspiration-collector/ai-insights/daily")
TODO_API = "http://127.0.0.1:9001/api/todos"


def get_latest_digest():
    """Find the most recent digest file (checks date subdirectories)."""
    if not os.path.isdir(DIGEST_DIR):
        return None
    files = []
    for root, dirs, filenames in os.walk(DIGEST_DIR):
        for f in filenames:
            if "_digest" in f and f.endswith(".md"):
                files.append(os.path.join(root, f))
    if not files:
        return None
    files.sort(key=lambda x: os.path.getmtime(x), reverse=True)
    return files[0]


def extract_todos(filepath):
    """Extract todo items from the digest markdown.
    Matches:
      1. [ ] checkbox items
      2. Numbered items like "1. **bold title**：description"
      3. Dash items like "- **bold title**：description"
    Only extracts from the "待办事项" section onwards.
    """
    with open(filepath) as f:
        content = f.read()

    todos = []
    in_todo_section = False

    for line in content.split("\n"):
        stripped = line.strip()

        # Detect start of todo section
        if re.search(r"待办事项|待办|TODO|Todo", stripped) and not in_todo_section:
            in_todo_section = True
            continue

        # End of todo section: next major heading or empty line after content
        if in_todo_section and stripped.startswith("## ") and "待办" not in stripped:
            break
        if in_todo_section and stripped == "" and todos:
            # Allow one blank line, but stop at second
            if todos and todos[-1] == "__blank__":
                todos.pop()  # remove previous blank marker
                break
            todos.append("__blank__")
            continue

        if not in_todo_section:
            continue

        # Pattern 1: [ ] checkbox
        m = re.match(r"\s*[-*]\s*\[\s*[ ]\s*\]\s*(.+)", line)
        if m:
            text = re.sub(r"\*\*", "", m.group(1).strip())  # strip bold markers
            if text:
                todos.append(text)
            continue

        # Pattern 2: numbered list "1. **bold**：description" or "1. description"
        m = re.match(r"\s*\d+\.\s+(.+)", line)
        if m:
            text = re.sub(r"\*\*", "", m.group(1).strip())  # strip bold markers
            if text:
                todos.append(text)
            continue

        # Pattern 3: dash list "- **bold**：description"
        m = re.match(r"\s*[-*]\s+(.+)", line)
        if m:
            text = re.sub(r"\*\*", "", m.group(1).strip())
            # Skip template headers like 【今日输入】
            if text and len(text) > 8 and not re.match(r"^【.+】$", text):
                todos.append(text)
            continue

    # Clean up blank markers
    todos = [t for t in todos if t != "__blank__"]
    return todos


def push_todos(todos):
    """Send extracted todos to the API (skip if already exists)."""
    try:
        resp = requests.get(TODO_API, timeout=5)
        existing = [t["text"] for t in resp.json().get("todos", [])]
    except:
        existing = []

    count = 0
    for text in todos:
        if text not in existing:
            requests.post(TODO_API, json={"text": text, "source": "inspiration"}, timeout=5)
            count += 1
    return count


if __name__ == "__main__":
    filepath = get_latest_digest()
    if not filepath:
        print("No digest found")
        exit(0)

    todos = extract_todos(filepath)
    print(f"Found {len(todos)} todos in {os.path.basename(filepath)}")
    if todos:
        for t in todos:
            print(f"  - {t[:60]}")
        pushed = push_todos(todos)
        print(f"Pushed {pushed} new todos to API")