"""Tests for the deterministic board builder."""

from __future__ import annotations

from datetime import datetime, time

import pytest

import sys
import pathlib
sys.path.insert(0, str(pathlib.Path(__file__).resolve().parents[2] / "skills" / "_lib"))

from lumina_skills.domain import (
    Appointment,
    AppointmentStatus,
    DayBoard,
    Gap,
)
from lumina_skills.board_builder import (
    build_board,
    format_board_text,
)


def _apt(
    apt_id: str,
    start_h: int,
    start_m: int,
    end_h: int,
    end_m: int,
    client: str = "Client",
    service: str = "Service",
    staff: str = "Staff",
    status: AppointmentStatus = AppointmentStatus.CONFIRMED,
    needs_confirmation: bool = False,
    notes: str = "",
) -> Appointment:
    """Helper to create an Appointment quickly."""
    return Appointment(
        appointment_id=apt_id,
        start_time=datetime(2026, 7, 28, start_h, start_m),
        end_time=datetime(2026, 7, 28, end_h, end_m),
        client_name=client,
        service_name=service,
        staff_name=staff,
        status=status,
        notes=notes,
        needs_confirmation=needs_confirmation,
    )


# ── build_board ────────────────────────────────────────────────────────────

def test_build_board_basic():
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire"),
        _apt("A2", 10, 0, 11, 0, "Bob", "Color", "Claire"),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon", source="fixtures")
    assert len(board.appointments) == 2
    assert board.total_booked_minutes == 120
    assert board.is_offline is True


def test_build_board_excludes_cancelled():
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire"),
        _apt("A2", 10, 0, 11, 0, "Bob", "Color", "Claire", status=AppointmentStatus.CANCELLED),
        _apt("A3", 11, 0, 12, 0, "Carol", "Style", "Claire"),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    assert len(board.appointments) == 2  # Cancelled excluded
    assert board.appointments[0].appointment_id == "A1"
    assert board.appointments[1].appointment_id == "A3"


def test_build_board_sorts_by_time():
    apts = [
        _apt("A2", 10, 0, 11, 0, "Bob", "Color", "Claire"),
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire"),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    assert board.appointments[0].appointment_id == "A1"
    assert board.appointments[1].appointment_id == "A2"


def test_build_board_confirmation_flags():
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire", needs_confirmation=False),
        _apt("A2", 10, 0, 11, 0, "Bob", "Color", "Claire", needs_confirmation=True),
        _apt("A3", 11, 0, 12, 0, "Carol", "Style", "Claire", needs_confirmation=True),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    assert len(board.needs_confirmation) == 2
    assert board.needs_confirmation[0].appointment_id == "A2"
    assert board.needs_confirmation[1].appointment_id == "A3"


def test_build_board_gaps_between_apts():
    """Gap between two appointments on the same staff."""
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire"),
        _apt("A2", 11, 0, 12, 0, "Bob", "Color", "Claire"),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    assert len(board.gaps) == 1
    gap = board.gaps[0]
    assert gap.start_time == time(10, 0)
    assert gap.end_time == time(11, 0)
    assert gap.duration_minutes == 60
    assert gap.staff_name == "Claire"


def test_build_board_no_small_gaps():
    """Gaps under 30 minutes are not included."""
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire"),
        _apt("A2", 10, 15, 11, 15, "Bob", "Color", "Claire"),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    # 15-minute gap should be excluded.
    assert len(board.gaps) == 0


def test_build_board_overlapping_appointments_warns():
    """Overlapping appointments emit a warning and skip the negative gap."""
    apts = [
        _apt("A1", 9, 0, 10, 30, "Alice", "Cut", "Claire"),
        _apt("A2", 10, 0, 11, 0, "Bob", "Color", "Claire"),  # starts 30 min before A1 ends
    ]
    with pytest.warns(UserWarning, match="Overlapping appointments"):
        board = build_board(apts, "2026-07-28", "Test Salon")
    # The negative gap should not appear in the board.
    assert all(g.duration_minutes >= 0 for g in board.gaps)
    # Both appointments still appear (overlap is a data issue, not a filter).
    assert len(board.appointments) == 2


def test_build_board_boundary_gaps():
    """Gaps from open→first and last→close when business_hours provided."""
    apts = [
        _apt("A1", 10, 0, 11, 0, "Alice", "Cut", "Claire"),
        _apt("A2", 15, 0, 16, 0, "Bob", "Color", "Claire"),
    ]
    board = build_board(
        apts, "2026-07-28", "Test Salon",
        business_hours={"open": "09:00", "close": "18:00"},
    )
    # Should have: 09:00-10:00 (60 min), 11:00-15:00 (240 min), 16:00-18:00 (120 min)
    assert len(board.gaps) == 3
    assert board.gaps[0].start_time == time(9, 0)
    assert board.gaps[0].end_time == time(10, 0)
    assert board.gaps[2].start_time == time(16, 0)
    assert board.gaps[2].end_time == time(18, 0)


def test_build_board_multi_staff_gaps():
    """Gaps are computed per staff member."""
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire"),
        _apt("A2", 9, 0, 10, 0, "Bob", "Color", "Maya"),
        _apt("A3", 11, 0, 12, 0, "Carol", "Style", "Claire"),
        _apt("A4", 11, 0, 12, 0, "Dave", "Trim", "Maya"),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    # Each staff has a 60-min gap.
    assert len(board.gaps) == 2
    staff_gaps = {g.staff_name: g.duration_minutes for g in board.gaps}
    assert staff_gaps["Claire"] == 60
    assert staff_gaps["Maya"] == 60


def test_build_board_invalid_business_hours_warns():
    """Malformed business_hours values warn and skip boundary gaps."""
    apts = [
        _apt("A1", 10, 0, 11, 0, "Alice", "Cut", "Claire"),
    ]
    with pytest.warns(UserWarning, match="Invalid business_hours"):
        board = build_board(
            apts, "2026-07-28", "Test Salon",
            business_hours={"open": "nine", "close": "18:00"},
        )
    # Only the close boundary gap should appear (open was invalid).
    assert len(board.gaps) == 1
    assert board.gaps[0].start_time == time(11, 0)
    assert board.gaps[0].end_time == time(18, 0)


def test_build_board_empty():
    board = build_board([], "2026-07-28", "Empty Salon")
    assert len(board.appointments) == 0
    assert len(board.gaps) == 0
    assert board.total_booked_minutes == 0
    assert board.total_gap_minutes == 0


def test_build_board_source_labeling():
    """Source is correctly set and is_offline derived."""
    board = build_board([], "2026-07-28", "Test", source="fixtures")
    assert board.source == "fixtures"
    assert board.is_offline is True

    board2 = build_board([], "2026-07-28", "Test", source="offline")
    assert board2.is_offline is True

    board3 = build_board([], "2026-07-28", "Test", source="vagaro")
    assert board3.is_offline is False


def test_build_board_totals():
    apts = [
        _apt("A1", 9, 0, 10, 30, "Alice", "Cut", "Claire"),  # 90 min
        _apt("A2", 11, 0, 12, 0, "Bob", "Color", "Claire"),   # 60 min
    ]
    board = build_board(
        apts, "2026-07-28", "Test Salon",
        business_hours={"open": "09:00", "close": "18:00"},
    )
    assert board.total_booked_minutes == 150
    # Gaps: 10:30-11:00 (30 min), 12:00-18:00 (360 min)
    assert board.total_gap_minutes == 390


# ── format_board_text ──────────────────────────────────────────────────────

def test_format_text_includes_offline_label():
    board = DayBoard(
        date="2026-07-28",
        salon_name="Test Salon",
        source="fixtures",
        is_offline=True,
    )
    text = format_board_text(board)
    assert "FIXTURE DATA" in text


def test_format_text_includes_appointments():
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire"),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    text = format_board_text(board)
    assert "Alice" in text
    assert "Cut" in text
    assert "Claire" in text
    assert "09:00" in text


def test_format_text_includes_gaps():
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire"),
        _apt("A2", 11, 0, 12, 0, "Bob", "Color", "Claire"),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    text = format_board_text(board)
    assert "Gaps" in text
    assert "60 min" in text


def test_format_text_includes_confirmation_flags():
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire", needs_confirmation=True),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    text = format_board_text(board)
    assert "CONFIRM" in text
    assert "Needs Confirmation" in text


def test_format_text_includes_summary():
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire"),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    text = format_board_text(board)
    assert "Summary" in text
    assert "60 min" in text


def test_format_text_no_appointments():
    board = DayBoard(
        date="2026-07-28",
        salon_name="Empty Salon",
        source="fixtures",
        is_offline=True,
    )
    text = format_board_text(board)
    assert "No appointments" in text


def test_format_text_no_gaps():
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire"),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    text = format_board_text(board)
    assert "No significant gaps" in text


def test_format_text_notes():
    apts = [
        _apt("A1", 9, 0, 10, 0, "Alice", "Cut", "Claire", notes="Allergic to ammonia"),
    ]
    board = build_board(apts, "2026-07-28", "Test Salon")
    text = format_board_text(board)
    assert "Allergic to ammonia" in text