"""Contextual first-touch onboarding hints.

Each hint is shown once per install the *first* time a user hits a behavior
fork (message-while-running, first long tool, ...), tracked in ``config.yaml``
under ``onboarding.seen.<flag>``. Kept tiny and dependency-free so both the CLI
and gateway can import it.
"""

from __future__ import annotations

import logging
from pathlib import Path
from typing import Any, Mapping, Optional

logger = logging.getLogger(__name__)


# Flag names (stable — used as config.yaml keys under onboarding.seen)
BUSY_INPUT_FLAG = "busy_input_prompt"
TOOL_PROGRESS_FLAG = "tool_progress_prompt"
OPENCLAW_RESIDUE_FLAG = "openclaw_residue_cleanup"
PROFILE_BUILD_FLAG = "profile_build_offered"


# ── Hint content ──────────────────────────────────────────────────────────
# Busy-input hints are keyed by the effective busy_input_mode that was just
# applied so the message matches reality; "interrupt" is the default branch.

_BUSY_INPUT_HINTS_GATEWAY = {
    "queue": (
        "💡 First-time tip — I queued your message instead of interrupting. "
        "Send `/busy interrupt` to make new messages stop the current task "
        "immediately, or `/busy status` to check. This notice won't appear again."
    ),
    "steer": (
        "💡 First-time tip — I steered your message into the current run; "
        "it will arrive after the next tool call instead of interrupting. "
        "Send `/busy interrupt` or `/busy queue` to change this, or "
        "`/busy status` to check. This notice won't appear again."
    ),
    "redirect": (
        "💡 First-time tip — I redirected the current run using your message. "
        "Completed work stays in context, and `/stop` still cancels the task. "
        "Send `/busy queue` to wait for a separate turn, or `/busy status` "
        "to check. This notice won't appear again."
    ),
}
_BUSY_INPUT_HINT_GATEWAY_DEFAULT = (
    "💡 First-time tip — I just interrupted my current task to answer you. "
    "Send `/busy queue` to queue follow-ups for after the current task instead, "
    "`/busy steer` to inject them mid-run without interrupting, or "
    "`/busy status` to check. This notice won't appear again."
)

_BUSY_INPUT_HINTS_CLI = {
    "queue": (
        "(tip) Your message was queued for the next turn. "
        "Use /busy interrupt to make Enter stop the current run instead, "
        "or /busy steer to inject mid-run. This tip only shows once."
    ),
    "steer": (
        "(tip) Your message was steered into the current run; it arrives "
        "after the next tool call. Use /busy interrupt or /busy queue to "
        "change this. This tip only shows once."
    ),
    "redirect": (
        "(tip) Your correction redirected the current run without discarding "
        "completed work. Use /stop to cancel or /busy queue to wait for a "
        "separate turn. This tip only shows once."
    ),
}
_BUSY_INPUT_HINT_CLI_DEFAULT = (
    "(tip) Your message interrupted the current run. "
    "Use /busy queue to queue messages for the next turn instead, "
    "or /busy steer to inject mid-run. This tip only shows once."
)


def busy_input_hint_gateway(mode: str) -> str:
    """Hint shown the first time a user messages while the agent is busy (markdown)."""
    return _BUSY_INPUT_HINTS_GATEWAY.get(mode, _BUSY_INPUT_HINT_GATEWAY_DEFAULT)


def busy_input_hint_cli(mode: str) -> str:
    """CLI version of the busy-input hint (plain text, no markdown)."""
    return _BUSY_INPUT_HINTS_CLI.get(mode, _BUSY_INPUT_HINT_CLI_DEFAULT)


def tool_progress_hint_gateway() -> str:
    return (
        "💡 First-time tip — that tool took a while and I'm streaming every step. "
        "If the progress messages feel noisy, send `/verbose` to cycle modes "
        "(all → new → off). This notice won't appear again."
    )


def tool_progress_hint_cli() -> str:
    return (
        "(tip) That tool ran for a while. Use /verbose to cycle tool-progress "
        "display modes (all -> new -> off -> verbose). This tip only shows once."
    )


def openclaw_residue_hint_cli() -> str:
    """Banner shown the first time Hermes finds ``~/.openclaw/``: migrate first, cleanup (which breaks OpenClaw) after."""
    return (
        "A legacy OpenClaw directory was detected at ~/.openclaw/.\n"
        "To port your config, memory, and skills over to Hermes, run "
        "`hermes claw migrate`.\n"
        "If you've already migrated and want to archive the old directory, "
        "run `hermes claw cleanup` (renames it to ~/.openclaw.pre-migration — "
        "OpenClaw will stop working after this).\n"
        "This tip only shows once."
    )


def detect_openclaw_residue(home: Optional[Path] = None) -> bool:
    """True if ``$HOME/.openclaw`` is a directory (pure check; ``home`` override for tests)."""
    base = home or Path.home()
    try:
        return (base / ".openclaw").is_dir()
    except OSError:
        return False


# ── Onboarding profile-build path (opt-in, consent-gated) ─────────────────

def profile_build_mode(config: Mapping[str, Any]) -> str:
    """``config.onboarding.profile_build``: ``"off"`` never offers; anything else -> ``"ask"`` (offer on first contact).

    This only governs whether the offer is made; lookups inside the flow are
    consented to separately in conversation.
    """
    onboarding = config.get("onboarding") if isinstance(config, Mapping) else None
    if not isinstance(onboarding, Mapping):
        return "ask"
    mode = onboarding.get("profile_build")
    if isinstance(mode, str) and mode.strip().lower() == "off":
        return "off"
    return "ask"


def profile_build_directive() -> str:
    """System-note directive appended to the very first message ever.

    Runs a short opt-in profile-build flow persisting to the user-profile memory
    store; phrased so the agent ASKS before any lookup and never silently reads
    connected accounts.
    """
    return (
        "\n\n[System note: This is the user's very first message ever. "
        "After a one-sentence introduction (mention /help shows commands), "
        "OFFER — do not assume — to build a short profile of them so you can "
        "be more useful, and explain they can decline or do it later. If and "
        "ONLY IF they accept:\n"
        "  1. Ask for whatever they're comfortable sharing (name, what they "
        "do, how they like you to work). Volunteered facts come first.\n"
        "  2. Before ANY external lookup, say what you intend to look up and "
        "get explicit consent for that step. Never read their connected "
        "accounts (email, calendar, etc.) silently — ask each time.\n"
        "  3. With consent, you may use web_search to confirm public details "
        "(e.g. employer, public profiles) from the data points they gave.\n"
        "  4. Save each confirmed, durable fact with the memory tool using "
        "target=\"user\" — keep entries compact and high-signal.\n"
        "If they decline at any point, stop immediately and continue normally. "
        "Keep the whole exchange light and conversational, not an interrogation.]"
    )


# ── State read / write ────────────────────────────────────────────────────

def _get_seen_dict(config: Mapping[str, Any]) -> Mapping[str, Any]:
    onboarding = config.get("onboarding") if isinstance(config, Mapping) else None
    if not isinstance(onboarding, Mapping):
        return {}
    seen = onboarding.get("seen")
    return seen if isinstance(seen, Mapping) else {}


def is_seen(config: Mapping[str, Any], flag: str) -> bool:
    """Return True if the user has already been shown this first-touch hint."""
    return bool(_get_seen_dict(config).get(flag))


def mark_seen(config_path: Path, flag: str) -> bool:
    """Persist ``onboarding.seen.<flag> = True`` atomically; False on any error (best-effort)."""
    try:
        import yaml
        from hermes_cli.config import atomic_config_write
    except Exception as e:  # pragma: no cover — dependency issue
        logger.debug("onboarding: failed to import yaml/utils: %s", e)
        return False

    try:
        cfg: dict = {}
        if config_path.exists():
            with open(config_path, encoding="utf-8") as f:
                cfg = yaml.safe_load(f) or {}
        if not isinstance(cfg.get("onboarding"), dict):
            cfg["onboarding"] = {}
        seen = cfg["onboarding"].get("seen")
        if not isinstance(seen, dict):
            seen = {}
            cfg["onboarding"]["seen"] = seen
        if seen.get(flag) is True:
            return True
        seen[flag] = True
        atomic_config_write(config_path, cfg)
        return True
    except Exception as e:
        logger.debug("onboarding: failed to mark flag %s: %s", flag, e)
        return False


__all__ = [
    "BUSY_INPUT_FLAG",
    "TOOL_PROGRESS_FLAG",
    "OPENCLAW_RESIDUE_FLAG",
    "PROFILE_BUILD_FLAG",
    "busy_input_hint_gateway",
    "busy_input_hint_cli",
    "tool_progress_hint_gateway",
    "tool_progress_hint_cli",
    "openclaw_residue_hint_cli",
    "detect_openclaw_residue",
    "profile_build_mode",
    "profile_build_directive",
    "is_seen",
    "mark_seen",
]