from pathlib import Path
from datetime import date

BASE = Path(__file__).resolve().parent.parent
SESSION = BASE / 'session'
LOG_DIR = SESSION / 'log'
CHAR_PATH = SESSION / 'character.md'
WORLD_PATH = SESSION / 'world.md'
JOURNAL_PATH = SESSION / 'journal.md'
AMBIENCE_PATH = SESSION / 'ambience.md'
AMBIENCE_OPTIONS_PATH = SESSION / 'ambience_options.md'
BOOK_PATH = SESSION / 'book.md'
LAST_PROMPT_PATH = SESSION / 'last_prompt.md'
CHANGES_PATH = SESSION / 'changes.md'
SETTINGS_PATH = SESSION / 'settings.json'
AUDIO_DIR = SESSION / 'audio'
TODAY = date.today().isoformat()
LOG_PATH = LOG_DIR / f'{TODAY}.md'

REFRESH_SECS = 2


def ensure_log():
    LOG_DIR.mkdir(parents=True, exist_ok=True)
    if not LOG_PATH.exists():
        LOG_PATH.write_text(f"# Session Log — {TODAY}\n\n")
    _populate_if_empty()


def _populate_if_empty():
    content = LOG_PATH.read_text().strip()
    if content and len(content.splitlines()) > 2:
        return


def clear_llm_log():
    from engine_lib.paths import LLM_LOG_PATH
    LLM_LOG_PATH.parent.mkdir(parents=True, exist_ok=True)
    LLM_LOG_PATH.write_text("")


def read_todo():
    if not JOURNAL_PATH.exists():
        return ["—— No journal yet ——"]
    lines = JOURNAL_PATH.read_text().splitlines()
    in_todo = False
    todo = []
    for l in lines:
        if l.strip().lstrip("#").strip().startswith("TODO"):
            in_todo = True
            continue
        if l.strip().startswith("#") and in_todo:
            break
        if in_todo and l.strip():
            todo.append(l.strip().lstrip("- "))
    return todo or ["—— All done! ——"]


def read_log_tail(n=200):
    if not LOG_PATH.exists():
        return []
    lines = LOG_PATH.read_text().splitlines()
    return [l for l in lines if l.strip() and not l.startswith("#")][-n:]


def status_summary():
    if not CHAR_PATH.exists():
        return "no character"
    lines = CHAR_PATH.read_text().splitlines()
    name = "?"
    health = "?"
    for l in lines:
        if l.startswith('**Name:**'):
            name = l.split(':', 1)[1].strip().strip('_').strip('*')
        if l.startswith('**Current Health:**'):
            h = l.split(':', 1)[1].strip().strip('_').strip('*')
            if h:
                health = h
        if l.startswith('**Max Health:**'):
            m = l.split(':', 1)[1].strip().strip('_').strip('*')
            if m and health == '?':
                health = m
    return f"{name}  ❤ {health}"


def log_count():
    return len(read_log_tail())


def load_book_pages():
    if not BOOK_PATH.exists() or not BOOK_PATH.read_text().strip():
        return ["*The story has not begun.*"]
    text = BOOK_PATH.read_text().strip()
    turns = text.split('\n## ')
    pages = []
    for i, t in enumerate(turns):
        pages.append(t if i == 0 else '## ' + t)
    return pages or ["*The story has not begun.*"]


def parse_ambience_options():
    if not AMBIENCE_OPTIONS_PATH.exists():
        return {}
    options = {}
    lines = AMBIENCE_OPTIONS_PATH.read_text().splitlines()
    in_table = False
    for line in lines:
        s = line.strip()
        if not s.startswith('|') or not s.endswith('|'):
            in_table = False
            continue
        parts = [p.strip() for p in s.split('|')]
        parts = [p for p in parts if p]
        if len(parts) < 2:
            continue
        if not in_table:
            in_table = True
            continue
        if all(c in '-:| ' for c in s):
            continue
        name = parts[0].lower()
        files = [f.strip() for f in parts[1].split(',') if f.strip()]
        paths = [AUDIO_DIR / f for f in files]
        options[name] = paths
    return options