"""Tests for core/models.py — all functions, in-memory SQLite."""

import re
import pytest
from core.db import init_db
from core import models
from core.models import TASK_CATEGORIES


@pytest.fixture
def conn():
    """Fresh in-memory DB for each test."""
    c = init_db(db_path=":memory:")
    yield c
    c.close()


# -- Projects --

def test_create_and_get_project(conn):
    p = models.create_project(conn, "vdol", "В долю поперёк", "~/projects/vdolipoperek",
                              tech_stack=["vue3", "nuxt"])
    assert p["id"] == "vdol"
    assert p["tech_stack"] == ["vue3", "nuxt"]
    assert p["status"] == "active"

    fetched = models.get_project(conn, "vdol")
    assert fetched["name"] == "В долю поперёк"


def test_get_project_not_found(conn):
    assert models.get_project(conn, "nope") is None


def test_list_projects_filter(conn):
    models.create_project(conn, "a", "A", "/a", status="active")
    models.create_project(conn, "b", "B", "/b", status="paused")
    models.create_project(conn, "c", "C", "/c", status="active")

    assert len(models.list_projects(conn)) == 3
    assert len(models.list_projects(conn, status="active")) == 2
    assert len(models.list_projects(conn, status="paused")) == 1


def test_update_project(conn):
    models.create_project(conn, "x", "X", "/x", priority=5)
    updated = models.update_project(conn, "x", priority=1, status="maintenance")
    assert updated["priority"] == 1
    assert updated["status"] == "maintenance"


def test_update_project_tech_stack_json(conn):
    models.create_project(conn, "x", "X", "/x", tech_stack=["python"])
    updated = models.update_project(conn, "x", tech_stack=["python", "fastapi"])
    assert updated["tech_stack"] == ["python", "fastapi"]


# -- project_type and SSH fields (KIN-071) --

def test_create_operations_project(conn):
    """KIN-071: operations project stores SSH fields. KIN-ARCH-005: path не передаётся."""
    p = models.create_project(
        conn, "srv1", "My Server",
        project_type="operations",
        ssh_host="10.0.0.1",
        ssh_user="root",
        ssh_key_path="~/.ssh/id_rsa",
        ssh_proxy_jump="jumpt",
    )
    assert p["project_type"] == "operations"
    assert p["ssh_host"] == "10.0.0.1"
    assert p["ssh_user"] == "root"
    assert p["ssh_key_path"] == "~/.ssh/id_rsa"
    assert p["ssh_proxy_jump"] == "jumpt"
    assert p["path"] is None


def test_create_development_project_defaults(conn):
    """KIN-071: development is default project_type."""
    p = models.create_project(conn, "devp", "Dev Project", "/path")
    assert p["project_type"] == "development"
    assert p["ssh_host"] is None


def test_update_project_ssh_fields(conn):
    """KIN-071: update_project can set SSH fields."""
    models.create_project(conn, "srv2", "Server 2", project_type="operations")
    updated = models.update_project(conn, "srv2", ssh_host="192.168.1.1", ssh_user="pelmen")
    assert updated["ssh_host"] == "192.168.1.1"
    assert updated["ssh_user"] == "pelmen"
    assert updated["path"] is None


# ---------------------------------------------------------------------------
# KIN-ARCH-003 — path nullable для operations-проектов
# Исправляет баг: workaround с пустой строкой ("") для operations-проектов
# ---------------------------------------------------------------------------

def test_kin_arch_003_operations_project_without_path_stores_null(conn):
    """KIN-ARCH-003: operations-проект без path сохраняется с path=NULL, не пустой строкой.

    До фикса: workaround — передавать path='' чтобы обойти NOT NULL constraint.
    После фикса: path=None (NULL в БД) допустим для operations-проектов.
    """
    p = models.create_project(
        conn, "ops_null", "Ops Null Path",
        project_type="operations",
        ssh_host="10.0.0.1",
    )
    assert p["path"] is None, (
        "KIN-ARCH-003 регрессия: path должен быть NULL, а не пустой строкой"
    )


def test_kin_arch_003_check_constraint_rejects_null_path_for_development(conn):
    """KIN-ARCH-003: CHECK constraint (path IS NOT NULL OR project_type='operations')
    отклоняет path=NULL для development-проектов."""
    import sqlite3 as _sqlite3
    with pytest.raises(_sqlite3.IntegrityError):
        models.create_project(
            conn, "dev_no_path", "Dev No Path",
            path=None, project_type="development",
        )


# -- validate_completion_mode (KIN-063) --

def test_validate_completion_mode_valid_auto_complete():
    """validate_completion_mode принимает 'auto_complete'."""
    assert models.validate_completion_mode("auto_complete") == "auto_complete"


def test_validate_completion_mode_valid_review():
    """validate_completion_mode принимает 'review'."""
    assert models.validate_completion_mode("review") == "review"


def test_validate_completion_mode_invalid_fallback():
    """validate_completion_mode возвращает 'review' для невалидных значений (фоллбэк)."""
    assert models.validate_completion_mode("auto") == "review"
    assert models.validate_completion_mode("") == "review"
    assert models.validate_completion_mode("unknown") == "review"


# -- get_effective_mode (KIN-063) --

def test_get_effective_mode_task_overrides_project(conn):
    """Task execution_mode имеет приоритет над project execution_mode."""
    models.create_project(conn, "p1", "P1", "/p1", execution_mode="review")
    models.create_task(conn, "P1-001", "p1", "Task", execution_mode="auto_complete")
    mode = models.get_effective_mode(conn, "p1", "P1-001")
    assert mode == "auto_complete"


def test_get_effective_mode_falls_back_to_project(conn):
    """Если задача без execution_mode — применяется project execution_mode."""
    models.create_project(conn, "p1", "P1", "/p1", execution_mode="auto_complete")
    models.create_task(conn, "P1-001", "p1", "Task")  # execution_mode=None
    mode = models.get_effective_mode(conn, "p1", "P1-001")
    assert mode == "auto_complete"


def test_get_effective_mode_project_review_overrides_default(conn):
    """Project execution_mode='review' + task без override → возвращает 'review'.

    Сценарий: PM хотел auto_complete, но проект настроен на review человеком.
    get_effective_mode должен вернуть project-level 'review'.
    """
    models.create_project(conn, "p1", "P1", "/p1", execution_mode="review")
    models.create_task(conn, "P1-001", "p1", "Task")  # нет task-level override
    mode = models.get_effective_mode(conn, "p1", "P1-001")
    assert mode == "review"


# -- Tasks --

def test_create_and_get_task(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    t = models.create_task(conn, "P1-001", "p1", "Fix bug",
                           brief={"summary": "broken login"})
    assert t["id"] == "P1-001"
    assert t["brief"] == {"summary": "broken login"}
    assert t["status"] == "pending"


def test_list_tasks_filters(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.create_project(conn, "p2", "P2", "/p2")
    models.create_task(conn, "P1-001", "p1", "Task A", status="pending")
    models.create_task(conn, "P1-002", "p1", "Task B", status="done")
    models.create_task(conn, "P2-001", "p2", "Task C", status="pending")

    assert len(models.list_tasks(conn)) == 3
    assert len(models.list_tasks(conn, project_id="p1")) == 2
    assert len(models.list_tasks(conn, status="pending")) == 2
    assert len(models.list_tasks(conn, project_id="p1", status="done")) == 1


def test_update_task(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.create_task(conn, "P1-001", "p1", "Task")
    updated = models.update_task(conn, "P1-001", status="in_progress",
                                 spec={"steps": [1, 2, 3]})
    assert updated["status"] == "in_progress"
    assert updated["spec"] == {"steps": [1, 2, 3]}
    assert updated["updated_at"] is not None


def test_subtask(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.create_task(conn, "P1-001", "p1", "Parent")
    child = models.create_task(conn, "P1-001a", "p1", "Child",
                               parent_task_id="P1-001")
    assert child["parent_task_id"] == "P1-001"


# -- Decisions --

def test_add_and_get_decisions(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    d = models.add_decision(conn, "p1", "gotcha", "iOS Safari bottom sheet",
                            "position:fixed breaks on iOS Safari",
                            category="ui", tags=["ios-safari", "css"])
    assert d["type"] == "gotcha"
    assert d["tags"] == ["ios-safari", "css"]

    results = models.get_decisions(conn, "p1")
    assert len(results) == 1


def test_decisions_filter_by_category(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.add_decision(conn, "p1", "decision", "Use WAL", "perf",
                        category="architecture")
    models.add_decision(conn, "p1", "gotcha", "Safari bug", "css",
                        category="ui")
    assert len(models.get_decisions(conn, "p1", category="ui")) == 1


def test_decisions_filter_by_tags(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.add_decision(conn, "p1", "gotcha", "Bug A", "desc",
                        tags=["safari", "css"])
    models.add_decision(conn, "p1", "gotcha", "Bug B", "desc",
                        tags=["chrome", "js"])
    models.add_decision(conn, "p1", "gotcha", "Bug C", "desc",
                        tags=["safari", "js"])

    assert len(models.get_decisions(conn, "p1", tags=["safari"])) == 2
    assert len(models.get_decisions(conn, "p1", tags=["js"])) == 2
    assert len(models.get_decisions(conn, "p1", tags=["css"])) == 1


def test_decisions_filter_by_types(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.add_decision(conn, "p1", "decision", "A", "a")
    models.add_decision(conn, "p1", "gotcha", "B", "b")
    models.add_decision(conn, "p1", "workaround", "C", "c")

    assert len(models.get_decisions(conn, "p1", types=["gotcha", "workaround"])) == 2


def test_decisions_limit(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    for i in range(10):
        models.add_decision(conn, "p1", "decision", f"D{i}", f"desc{i}")
    assert len(models.get_decisions(conn, "p1", limit=3)) == 3


# -- Modules --

def test_add_and_get_modules(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    m = models.add_module(conn, "p1", "search", "frontend", "src/search/",
                          description="Search UI", dependencies=["auth"])
    assert m["name"] == "search"
    assert m["dependencies"] == ["auth"]

    mods = models.get_modules(conn, "p1")
    assert len(mods) == 1


# -- Agent Logs --

def test_log_agent_run(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    log = models.log_agent_run(conn, "p1", "developer", "implement",
                               tokens_used=5000, model="sonnet",
                               cost_usd=0.015, duration_seconds=45)
    assert log["agent_role"] == "developer"
    assert log["cost_usd"] == 0.015
    assert log["success"] == 1  # SQLite boolean


# -- Pipelines --

def test_create_and_update_pipeline(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.create_task(conn, "P1-001", "p1", "Task")
    pipe = models.create_pipeline(conn, "P1-001", "p1", "feature",
                                  [{"step": "architect"}, {"step": "dev"}])
    assert pipe["status"] == "running"
    assert pipe["steps"] == [{"step": "architect"}, {"step": "dev"}]

    updated = models.update_pipeline(conn, pipe["id"], status="completed",
                                     total_cost_usd=0.05, total_tokens=10000)
    assert updated["status"] == "completed"
    assert updated["completed_at"] is not None


# -- Support --

def test_create_and_list_tickets(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    t = models.create_ticket(conn, "p1", "telegram_bot", "Не работает поиск",
                             client_id="tg:12345", classification="bug")
    assert t["source"] == "telegram_bot"
    assert t["status"] == "new"

    tickets = models.list_tickets(conn, project_id="p1")
    assert len(tickets) == 1

    assert len(models.list_tickets(conn, status="resolved")) == 0


# -- Statistics --

def test_project_summary(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.create_task(conn, "P1-001", "p1", "A", status="done")
    models.create_task(conn, "P1-002", "p1", "B", status="in_progress")
    models.create_task(conn, "P1-003", "p1", "C", status="blocked")

    summary = models.get_project_summary(conn)
    assert len(summary) == 1
    s = summary[0]
    assert s["total_tasks"] == 3
    assert s["done_tasks"] == 1
    assert s["active_tasks"] == 1
    assert s["blocked_tasks"] == 1


def test_cost_summary(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.log_agent_run(conn, "p1", "dev", "implement",
                         cost_usd=0.10, tokens_used=5000)
    models.log_agent_run(conn, "p1", "reviewer", "review",
                         cost_usd=0.05, tokens_used=2000)

    costs = models.get_cost_summary(conn, days=1)
    assert len(costs) == 1
    assert costs[0]["total_cost_usd"] == pytest.approx(0.15)
    assert costs[0]["total_tokens"] == 7000
    assert costs[0]["runs"] == 2


def test_cost_summary_empty(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    assert models.get_cost_summary(conn, days=7) == []


# -- add_decision_if_new --

def test_add_decision_if_new_adds_new_decision(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    d = models.add_decision_if_new(conn, "p1", "gotcha", "Use WAL mode", "description")
    assert d is not None
    assert d["title"] == "Use WAL mode"
    assert d["type"] == "gotcha"


def test_add_decision_if_new_skips_exact_duplicate(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.add_decision(conn, "p1", "gotcha", "Use WAL mode", "desc1")
    result = models.add_decision_if_new(conn, "p1", "gotcha", "Use WAL mode", "desc2")
    assert result is None
    # Existing decision not duplicated
    assert len(models.get_decisions(conn, "p1")) == 1


def test_add_decision_if_new_skips_case_insensitive_duplicate(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.add_decision(conn, "p1", "decision", "Use UUID for task IDs", "desc")
    result = models.add_decision_if_new(conn, "p1", "decision", "use uuid for task ids", "other desc")
    assert result is None
    assert len(models.get_decisions(conn, "p1")) == 1


def test_add_decision_if_new_allows_same_title_different_type(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.add_decision(conn, "p1", "gotcha", "SQLite WAL", "desc")
    result = models.add_decision_if_new(conn, "p1", "convention", "SQLite WAL", "other desc")
    assert result is not None
    assert len(models.get_decisions(conn, "p1")) == 2


def test_add_decision_if_new_skips_whitespace_duplicate(conn):
    models.create_project(conn, "p1", "P1", "/p1")
    models.add_decision(conn, "p1", "convention", "Run tests after each change", "desc")
    result = models.add_decision_if_new(conn, "p1", "convention", "  Run tests after each change  ", "desc2")
    assert result is None
    assert len(models.get_decisions(conn, "p1")) == 1


# -- next_task_id (KIN-OBS-009) --

def test_next_task_id_with_category_first(conn):
    """Первая задача с category='SEC' → 'VDOL-SEC-001'."""
    models.create_project(conn, "vdol", "VDOL", "/vdol")
    task_id = models.next_task_id(conn, "vdol", category="SEC")
    assert task_id == "VDOL-SEC-001"


def test_next_task_id_with_category_increments(conn):
    """Вторая задача с category='SEC' → 'VDOL-SEC-002'."""
    models.create_project(conn, "vdol", "VDOL", "/vdol")
    models.create_task(conn, "VDOL-SEC-001", "vdol", "Task 1", category="SEC")
    task_id = models.next_task_id(conn, "vdol", category="SEC")
    assert task_id == "VDOL-SEC-002"


def test_next_task_id_category_counters_independent(conn):
    """Счётчики категорий независимы: SEC-002 не влияет на UI-001."""
    models.create_project(conn, "vdol", "VDOL", "/vdol")
    models.create_task(conn, "VDOL-SEC-001", "vdol", "Sec Task 1", category="SEC")
    models.create_task(conn, "VDOL-SEC-002", "vdol", "Sec Task 2", category="SEC")
    task_id = models.next_task_id(conn, "vdol", category="UI")
    assert task_id == "VDOL-UI-001"


def test_next_task_id_without_category_backward_compat(conn):
    """Задача без category → 'VDOL-001' (backward compat)."""
    models.create_project(conn, "vdol", "VDOL", "/vdol")
    task_id = models.next_task_id(conn, "vdol")
    assert task_id == "VDOL-001"


def test_next_task_id_mixed_formats_no_collision(conn):
    """Смешанный проект: счётчики старого и нового форматов не пересекаются."""
    models.create_project(conn, "kin", "KIN", "/kin")
    models.create_task(conn, "KIN-001", "kin", "Old style task")
    models.create_task(conn, "KIN-002", "kin", "Old style task 2")
    # Новый формат с категорией не мешает старому
    cat_id = models.next_task_id(conn, "kin", category="OBS")
    assert cat_id == "KIN-OBS-001"
    # Старый формат не мешает новому
    old_id = models.next_task_id(conn, "kin")
    assert old_id == "KIN-003"


# -- Obsidian sync regex (KIN-OBS-009, решение #75) --

_OBSIDIAN_TASK_PATTERN = re.compile(
    r"^[-*]\s+\[([xX ])\]\s+([A-Z][A-Z0-9]*-(?:[A-Z][A-Z0-9]*-)?\d+)\s+(.+)$"
)


def test_obsidian_regex_matches_old_format():
    """Старый формат KIN-001 матчится."""
    m = _OBSIDIAN_TASK_PATTERN.match("- [x] KIN-001 Fix login bug")
    assert m is not None
    assert m.group(2) == "KIN-001"


def test_obsidian_regex_matches_new_format():
    """Новый формат VDOL-SEC-001 матчится."""
    m = _OBSIDIAN_TASK_PATTERN.match("- [ ] VDOL-SEC-001 Security audit")
    assert m is not None
    assert m.group(2) == "VDOL-SEC-001"


def test_obsidian_regex_matches_obs_format():
    """Формат KIN-OBS-009 матчится (проверяем задачу этой фичи)."""
    m = _OBSIDIAN_TASK_PATTERN.match("* [X] KIN-OBS-009 Task ID по категориям")
    assert m is not None
    assert m.group(2) == "KIN-OBS-009"


def test_obsidian_regex_no_match_lowercase():
    """Нижний регистр не матчится."""
    assert _OBSIDIAN_TASK_PATTERN.match("- [x] proj-001 lowercase id") is None


def test_obsidian_regex_no_match_numeric_prefix():
    """Числовой префикс не матчится."""
    assert _OBSIDIAN_TASK_PATTERN.match("- [x] 123-abc invalid format") is None


def test_obsidian_regex_done_state(conn):
    """Статус done/pending корректно извлекается."""
    m_done = _OBSIDIAN_TASK_PATTERN.match("- [x] KIN-UI-003 Done task")
    m_pending = _OBSIDIAN_TASK_PATTERN.match("- [ ] KIN-UI-004 Pending task")
    assert m_done.group(1) == "x"
    assert m_pending.group(1) == " "


# -- next_task_id для всех 12 категорий (KIN-OBS-009) --

@pytest.mark.parametrize("cat", TASK_CATEGORIES)
def test_next_task_id_all_categories_generate_correct_format(conn, cat):
    """next_task_id генерирует ID формата PROJ-CAT-001 для каждой из 12 категорий."""
    models.create_project(conn, "vdol", "VDOL", "/vdol")
    task_id = models.next_task_id(conn, "vdol", category=cat)
    assert task_id == f"VDOL-{cat}-001"


# -- update_task category не ломает brief (KIN-OBS-009, решение #74) --

def test_update_task_category_preserves_brief(conn):
    """update_task(category=...) не перетирает существующее поле brief."""
    models.create_project(conn, "p1", "P1", "/p1")
    models.create_task(conn, "P1-001", "p1", "Task", brief={"summary": "important context"})
    updated = models.update_task(conn, "P1-001", category="SEC")
    assert updated["category"] == "SEC"
    assert updated["brief"] == {"summary": "important context"}


def test_update_task_category_preserves_status_and_priority(conn):
    """update_task(category=...) не меняет остальные поля задачи."""
    models.create_project(conn, "p1", "P1", "/p1")
    models.create_task(conn, "P1-001", "p1", "Task", status="in_progress", priority=3)
    updated = models.update_task(conn, "P1-001", category="UI")
    assert updated["category"] == "UI"
    assert updated["status"] == "in_progress"
    assert updated["priority"] == 3


# -- KIN-ARCH-006: autocommit_enabled и obsidian_vault_path в SCHEMA --

def test_schema_project_has_autocommit_enabled_column(conn):
    """KIN-ARCH-006: таблица projects содержит колонку autocommit_enabled."""
    cols = {r[1] for r in conn.execute("PRAGMA table_info(projects)").fetchall()}
    assert "autocommit_enabled" in cols


def test_schema_project_has_obsidian_vault_path_column(conn):
    """KIN-ARCH-006: таблица projects содержит колонку obsidian_vault_path."""
    cols = {r[1] for r in conn.execute("PRAGMA table_info(projects)").fetchall()}
    assert "obsidian_vault_path" in cols


def test_autocommit_enabled_default_is_zero(conn):
    """KIN-ARCH-006: autocommit_enabled по умолчанию равен 0."""
    models.create_project(conn, "p1", "P1", "/p1")
    p = models.get_project(conn, "p1")
    assert p["autocommit_enabled"] == 0


def test_obsidian_vault_path_default_is_none(conn):
    """KIN-ARCH-006: obsidian_vault_path по умолчанию равен NULL."""
    models.create_project(conn, "p1", "P1", "/p1")
    p = models.get_project(conn, "p1")
    assert p["obsidian_vault_path"] is None


def test_autocommit_enabled_can_be_set_to_one(conn):
    """KIN-ARCH-006: autocommit_enabled можно установить в 1 через update_project."""
    models.create_project(conn, "p1", "P1", "/p1")
    updated = models.update_project(conn, "p1", autocommit_enabled=1)
    assert updated["autocommit_enabled"] == 1


def test_obsidian_vault_path_can_be_set(conn):
    """KIN-ARCH-006: obsidian_vault_path можно установить через update_project."""
    models.create_project(conn, "p1", "P1", "/p1")
    updated = models.update_project(conn, "p1", obsidian_vault_path="/vault/my-notes")
    assert updated["obsidian_vault_path"] == "/vault/my-notes"