"""
profiles.py — Multi-Patient Care Profile Database
Stores individual care profiles (Self, Parent, Child, etc.)
Each profile holds legal/clinical baseline data for pre-visit paperwork.
"""
import json
import uuid
from copy import deepcopy
from pathlib import Path
from typing import Optional

import config as cfg

PROFILES_JSON = cfg.DATA_DIR / "profiles.json"

# 50 US states + DC — abbreviations are stored values; labels are "XX — Name" for dropdowns.
_US_STATE_NAMES: dict[str, str] = {
    "AL": "Alabama", "AK": "Alaska", "AZ": "Arizona", "AR": "Arkansas",
    "CA": "California", "CO": "Colorado", "CT": "Connecticut", "DE": "Delaware",
    "DC": "District of Columbia", "FL": "Florida", "GA": "Georgia", "HI": "Hawaii",
    "ID": "Idaho", "IL": "Illinois", "IN": "Indiana", "IA": "Iowa",
    "KS": "Kansas", "KY": "Kentucky", "LA": "Louisiana", "ME": "Maine",
    "MD": "Maryland", "MA": "Massachusetts", "MI": "Michigan", "MN": "Minnesota",
    "MS": "Mississippi", "MO": "Missouri", "MT": "Montana", "NE": "Nebraska",
    "NV": "Nevada", "NH": "New Hampshire", "NJ": "New Jersey", "NM": "New Mexico",
    "NY": "New York", "NC": "North Carolina", "ND": "North Dakota", "OH": "Ohio",
    "OK": "Oklahoma", "OR": "Oregon", "PA": "Pennsylvania", "RI": "Rhode Island",
    "SC": "South Carolina", "SD": "South Dakota", "TN": "Tennessee", "TX": "Texas",
    "UT": "Utah", "VT": "Vermont", "VA": "Virginia", "WA": "Washington",
    "WV": "West Virginia", "WI": "Wisconsin", "WY": "Wyoming",
}
_US_NAME_TO_ABBR = {name.lower(): abbr for abbr, name in _US_STATE_NAMES.items()}

US_STATE_CHOICES: list[tuple[str, str]] = [
    (f"{abbr} — {name}", abbr)
    for abbr, name in sorted(_US_STATE_NAMES.items(), key=lambda item: item[1])
]


def normalize_us_state(state: str) -> Optional[str]:
    """Return a 2-letter US state code, or None if empty/unrecognized."""
    s = (state or "").strip()
    if not s:
        return None
    if len(s) == 2:
        abbr = s.upper()
        return abbr if abbr in _US_STATE_NAMES else None
    return _US_NAME_TO_ABBR.get(s.lower())

PROFILE_TEMPLATE = {
    "id":               "",  # UUID, auto-generated
    "label":            "",  # User-friendly label (e.g. "Mom", "Self")
    "full_name":        "",  # Full Legal Name
    "dob":              "",  # Date of Birth (YYYY-MM-DD)
    "street_address":   "",  # Composed single-line (legacy + export)
    "address_line1":    "",
    "address_line2":    "",
    "address_city":     "",
    "address_state":    "",
    "address_zip":      "",
    "phone_number":     "",  # Patient primary phone number
    "email":            "",  # Patient email address
    "insurance_provider": "",
    "policy_id":        "",
    "group_id":         "",
    "pcp_name":         "",  # Primary Care Doctor name
    "pcp_clinic":       "",  # Clinic / office name
    "pcp_address":      "",  # Composed clinic address (legacy + export)
    "pcp_address_line1": "",
    "pcp_address_line2": "",
    "pcp_address_city": "",
    "pcp_address_state": "",
    "pcp_address_zip":   "",
    "pcp_phone":        "",  # PCP office phone
    # Care Mode lives on the profile, not the appointment.
    # "Managing someone else's care" → brief shows a Caregiver header line
    # "Managing my own care"         → brief suppresses the Caregiver line
    "care_mode": "Managing someone else's care",
    "caregiver_name": "",  # only used when care_mode == "Managing someone else's care"
    "caregiver_phone": "",  # caregiver contact phone (Side B, caregiver mode)
    "caregiver_email": "",  # caregiver contact email (Side B, caregiver mode)
    # Multiple emergency contacts: list of {"name", "phone", "relationship"} dicts.
    # The form saves this list; the brief generator renders all non-empty entries.
    "emergency_contacts": [],
    # Legacy single-contact fields — kept on disk for backward compat with
    # profiles saved before the multi-contact refactor. New saves write to
    # `emergency_contacts` instead. The brief generator falls back to these
    # if the list is empty.
    "emergency_contact_name":  "",
    "emergency_contact_phone": "",
    # Ongoing symptoms tracked on the profile; suggested on Doctor Visit tab.
    "tracked_symptoms": [],
}


def get_tracked_symptoms(profile_id: str) -> list[str]:
    """Return cleaned tracked symptom labels for a profile."""
    if not profile_id:
        return []
    p = get_profile(profile_id) or {}
    raw = p.get("tracked_symptoms") or []
    if not isinstance(raw, list):
        return []
    return [str(s).strip() for s in raw if str(s).strip()]


def _load_all() -> list[dict]:
    """Load all profiles from disk."""
    if PROFILES_JSON.exists():
        try:
            with open(PROFILES_JSON, "r", encoding="utf-8") as f:
                return json.load(f)
        except Exception:
            pass
    return []


def _save_all(profiles: list[dict]):
    """Persist all profiles to disk."""
    cfg.DATA_DIR.mkdir(parents=True, exist_ok=True)
    with open(PROFILES_JSON, "w", encoding="utf-8") as f:
        json.dump(profiles, f, indent=2)


# ── Public API ────────────────────────────────────────────────────────────────

def create_profile(label: str = "", template: Optional[dict] = None) -> dict:
    """Create a new profile. Returns the created profile dict."""
    profiles = _load_all()
    profile = deepcopy(PROFILE_TEMPLATE)
    profile["id"] = str(uuid.uuid4())
    profile["label"] = label
    if template:
        # Merge provided fields without replacing id
        tid = template.pop("id", None)
        profile.update(template)
        if tid:
            profile["id"] = tid
    profiles.append(profile)
    _save_all(profiles)
    return profile


def get_profiles() -> list[dict]:
    """Return all profiles."""
    return _load_all()


def get_profile(profile_id: str) -> Optional[dict]:
    """Return a single profile by id, or None."""
    for p in _load_all():
        if p["id"] == profile_id:
            return p
    return None


def update_profile(profile_id: str, updates: dict) -> Optional[dict]:
    """Update fields on an existing profile. Returns updated profile or None."""
    profiles = _load_all()
    for i, p in enumerate(profiles):
        if p["id"] == profile_id:
            # Don't let caller change the id
            updates.pop("id", None)
            profiles[i].update(updates)
            _save_all(profiles)
            return profiles[i]
    return None


def delete_profile(profile_id: str) -> bool:
    """Delete a profile by id. Returns True if deleted."""
    profiles = _load_all()
    before = len(profiles)
    profiles = [p for p in profiles if p["id"] != profile_id]
    if len(profiles) < before:
        _save_all(profiles)
        return True
    return False


def delete_profile_data(profile_id: str):
    """Remove all tracker data scoped to profile_id."""
    import med_tracker
    import appointment_tracker
    import food_tracker

    med_tracker.delete_for_profile(profile_id)
    appointment_tracker.delete_for_profile(profile_id)
    food_tracker.delete_for_profile(profile_id)

    try:
        import rag_engine
        rag_engine.delete_for_profile(profile_id)
    except Exception:
        pass


def profile_display_name(profile: dict) -> str:
    """Human-readable name for dropdowns and session banner."""
    full = (profile.get("full_name") or "").strip()
    if full:
        return full
    return (profile.get("label") or "").strip() or "Unnamed"


def get_profile_choices() -> list[tuple[str, str]]:
    """Return (display name, id) pairs for dropdown population."""
    return [(profile_display_name(p), p["id"]) for p in _load_all()]


def compose_address(
    line1: str = "",
    line2: str = "",
    city: str = "",
    state: str = "",
    zip_code: str = "",
    legacy: str = "",
) -> str:
    """Build a multi-line mailing address from structured parts."""
    line1 = (line1 or "").strip()
    line2 = (line2 or "").strip()
    city = (city or "").strip()
    state = (state or "").strip()
    zip_code = (zip_code or "").strip()
    if not any((line1, line2, city, state, zip_code)) and legacy:
        return legacy.strip()
    lines = []
    if line1:
        lines.append(line1)
    if line2:
        lines.append(line2)
    tail = []
    if state:
        tail.append(state.upper() if len(state) == 2 else state)
    if zip_code:
        tail.append(zip_code)
    if city and tail:
        lines.append(f"{city}, {' '.join(tail)}")
    elif city:
        lines.append(city)
    elif tail:
        lines.append(" ".join(tail))
    return "\n".join(lines)


def address_parts(profile: dict, *, pcp: bool = False) -> tuple[str, str, str, str, str]:
    """Return (line1, line2, city, state, zip) with legacy single-field fallback."""
    if pcp:
        line1 = profile.get("pcp_address_line1", "")
        line2 = profile.get("pcp_address_line2", "")
        city = profile.get("pcp_address_city", "")
        state = profile.get("pcp_address_state", "")
        zip_code = profile.get("pcp_address_zip", "")
        legacy = profile.get("pcp_address", "")
    else:
        line1 = profile.get("address_line1", "")
        line2 = profile.get("address_line2", "")
        city = profile.get("address_city", "")
        state = profile.get("address_state", "")
        zip_code = profile.get("address_zip", "")
        legacy = profile.get("street_address", "")
    line1, line2, city, state, zip_code = map(
        lambda v: (v or "").strip(), (line1, line2, city, state, zip_code)
    )
    if not any((line1, line2, city, state, zip_code)) and legacy:
        return legacy.strip(), "", "", "", ""
    return line1, line2, city, state, zip_code