from datetime import datetime

import pytest
from fastapi.testclient import TestClient
from pydantic import ValidationError

from app.auth import require_admin
from app.database import get_db
from app.main import create_app
from app.models import (
    AdminUser,
    HomeTeamBuilding,
    HomeWanfaRecommendation,
    HomeWildArchive,
    WanfaCategory,
    WanfaRoute,
)
from app.schemas import HomeTeamBuildingCreate, HomeWanfaRecommendationCreate, HomeWildArchiveCreate


class FakeScalarResult:
    def __init__(self, items):
        self.items = items

    def all(self):
        return self.items


class FakeDb:
    def __init__(self, *, items=None, items_by_model=None, scalar_values=None):
        self.items = list(items or [])
        self.items_by_model = items_by_model or {}
        self.scalar_values = list(scalar_values or [])
        self.added = []
        self.deleted = []
        self.committed = False

    def scalars(self, statement):
        entity = statement.column_descriptions[0].get("entity")
        return FakeScalarResult(self.items_by_model.get(entity, self.items))

    def scalar(self, _statement):
        return self.scalar_values.pop(0) if self.scalar_values else None

    def get(self, model, item_id):
        candidates = self.items_by_model.get(model, self.items)
        return next((item for item in candidates if isinstance(item, model) and item.id == item_id), None)

    def add(self, item):
        self.added.append(item)
        self.items.append(item)

    def delete(self, item):
        self.deleted.append(item)
        if item in self.items:
            self.items.remove(item)

    def flush(self):
        for item in self.added:
            if not getattr(item, "id", None):
                item.id = "home-item-test-id"

    def commit(self):
        self.committed = True


def make_admin_user():
    return AdminUser(
        id="admin-test",
        email="admin@example.test",
        name="Admin",
        role="admin",
        passwordHash="not-used",
        isActive=True,
    )


def make_team(**overrides):
    return HomeTeamBuilding(
        id=overrides.get("id", "wild-challenge"),
        tag=overrides.get("tag", "户外挑战"),
        title=overrides.get("title", "山野挑战，共创极境"),
        description=overrides.get("description", "洞穴、瀑降与协作，适合 10-30 人。"),
        image=overrides.get("image", "https://example.test/team.jpg"),
        demandKeyword=overrides.get("demandKeyword", "户外团建"),
        detailSubtitle=overrides.get("detailSubtitle", "越过山丘，向来处去"),
        detailParagraphs=overrides.get("detailParagraphs", ["真正的贵州，从未被写进攻略里的山野故事。", "我们用一次次出发，把团队重新带回自然。"]),
        isActive=overrides.get("isActive", True),
        sortOrder=overrides.get("sortOrder", 0),
        createdAt=datetime(2026, 1, 1),
        updatedAt=datetime(2026, 1, 2),
    )


def make_archive(**overrides):
    return HomeWildArchive(
        id=overrides.get("id", "hundred-meter-descent"),
        title=overrides.get("title", "百米自降"),
        image=overrides.get("image", "https://example.test/archive.jpg"),
        images=overrides.get("images", ["https://example.test/archive.jpg", "https://example.test/archive-2.jpg"]),
        demandKeyword=overrides.get("demandKeyword", "悬崖瀑降"),
        isActive=overrides.get("isActive", True),
        sortOrder=overrides.get("sortOrder", 0),
        createdAt=datetime(2026, 1, 1),
        updatedAt=datetime(2026, 1, 2),
    )


def make_wanfa_category(**overrides):
    route = WanfaRoute(
        id="family-water",
        categoryId=overrides.get("id", "family-route"),
        title="亲子玩水",
        subtitle="贵州·轻松节奏与自然课堂",
        image="https://example.test/family-water.jpg",
        routeCount=4,
        demandKeyword="亲子玩水",
        sortOrder=0,
    )
    return WanfaCategory(
        id=overrides.get("id", "family-route"),
        label=overrides.get("label", "亲子路线"),
        sortOrder=0,
        routes=[route],
    )


def make_wanfa_recommendation(category=None, **overrides):
    category = category or make_wanfa_category()
    return HomeWanfaRecommendation(
        id=overrides.get("id", "recommendation-1"),
        categoryId=category.id,
        category=category,
        isActive=overrides.get("isActive", True),
        sortOrder=overrides.get("sortOrder", 0),
        createdAt=datetime(2026, 1, 1),
        updatedAt=datetime(2026, 1, 2),
    )


def admin_app(fake_db):
    app = create_app()
    app.dependency_overrides[get_db] = lambda: fake_db
    app.dependency_overrides[require_admin] = make_admin_user
    return app


def test_home_wild_archive_schema_normalizes_detail_image_urls():
    item = HomeWildArchiveCreate(
        title=" 石龙洞 ",
        image=" https://example.test/cover.jpg ",
        images=[" https://example.test/one.jpg ", "https://example.test/two.jpg"],
        demandKeyword=" 地心探险 ",
    )

    assert item.title == "石龙洞"
    assert item.image == "https://example.test/cover.jpg"
    assert item.images == ["https://example.test/one.jpg", "https://example.test/two.jpg"]


def test_home_team_building_schema_normalizes_detail_content():
    item = HomeTeamBuildingCreate(
        tag=" 户外挑战 ",
        title=" 山野挑战，共创极境 ",
        description=" 洞穴、瀑降与协作。 ",
        image=" https://example.test/team.jpg ",
        demandKeyword=" 户外团建 ",
        detailSubtitle=" 越过山丘，向来处去 ",
        detailParagraphs=[" 第一段 ", "", " 第二段 "],
    )

    assert item.detailSubtitle == "越过山丘，向来处去"
    assert item.detailParagraphs == ["第一段", "第二段"]


def test_admin_home_team_create_appends_to_end():
    fake_db = FakeDb(scalar_values=[2])
    app = admin_app(fake_db)
    try:
        response = TestClient(app).post(
            "/api/admin/home/team-buildings",
            json={
                "tag": " 团队协作 ",
                "title": "峡谷溯溪，默契同行",
                "description": "溯溪与分组协作，兼顾参与感与安全。",
                "image": "https://example.test/team.jpg",
                "demandKeyword": "峡谷团建",
                "detailSubtitle": "并肩探索，共创默契",
                "detailParagraphs": ["第一段正文", "第二段正文"],
            },
        )
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 201
    assert fake_db.added[0].tag == "团队协作"
    assert fake_db.added[0].detailSubtitle == "并肩探索，共创默契"
    assert fake_db.added[0].detailParagraphs == ["第一段正文", "第二段正文"]
    assert fake_db.added[0].sortOrder == 3
    assert fake_db.committed


def test_admin_home_wild_patch_updates_record():
    archive = make_archive()
    fake_db = FakeDb(items=[archive])
    app = admin_app(fake_db)
    try:
        response = TestClient(app).patch(
            "/api/admin/home/wild-archives/hundred-meter-descent",
            json={"title": "百米自降体验", "isActive": False},
        )
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 200
    assert response.json()["data"]["title"] == "百米自降体验"
    assert response.json()["data"]["isActive"] is False
    assert fake_db.committed


def test_admin_home_team_patch_updates_detail_content():
    team = make_team()
    fake_db = FakeDb(items=[team])
    app = admin_app(fake_db)
    try:
        response = TestClient(app).patch(
            "/api/admin/home/team-buildings/wild-challenge",
            json={
                "detailSubtitle": " 并肩探索，共创默契 ",
                "detailParagraphs": [" 第一段正文 ", "", " 第二段正文 "],
            },
        )
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 200
    assert team.detailSubtitle == "并肩探索，共创默契"
    assert team.detailParagraphs == ["第一段正文", "第二段正文"]
    assert fake_db.committed


def test_admin_home_wild_create_persists_detail_images():
    fake_db = FakeDb(scalar_values=[0])
    app = admin_app(fake_db)
    try:
        response = TestClient(app).post(
            "/api/admin/home/wild-archives",
            json={
                "title": "石龙洞——客片案例",
                "image": "https://example.test/cover.jpg",
                "images": ["https://example.test/cover.jpg", "https://example.test/inside.jpg"],
                "demandKeyword": "地心探险",
            },
        )
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 201
    assert fake_db.added[0].images == [
        "https://example.test/cover.jpg",
        "https://example.test/inside.jpg",
    ]


def test_home_wanfa_recommendation_schema_requires_category_id():
    item = HomeWanfaRecommendationCreate(categoryId=" family-route ")

    assert item.categoryId == "family-route"


def test_admin_home_wanfa_recommendation_create_links_existing_category():
    category = make_wanfa_category()
    fake_db = FakeDb(items=[category], scalar_values=[0])
    app = admin_app(fake_db)
    try:
        response = TestClient(app).post(
            "/api/admin/home/play-recommendations",
            json={"categoryId": " family-route "},
        )
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 201
    assert response.json()["data"]["categoryId"] == "family-route"
    assert response.json()["data"]["categoryLabel"] == "亲子路线"
    assert fake_db.added[0].categoryId == "family-route"


def test_public_home_places_active_wanfa_category_recommendations_in_experiences():
    recommendation = make_wanfa_recommendation()
    app = create_app()
    fake_db = FakeDb(
        items_by_model={
            HomeTeamBuilding: [],
            HomeWildArchive: [],
            HomeWanfaRecommendation: [recommendation],
        }
    )
    app.dependency_overrides[get_db] = lambda: fake_db
    try:
        response = TestClient(app).get("/api/public/home")
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 200
    payload = response.json()["data"]
    assert payload["experiences"] == [
        {
            "id": "recommendation-1",
            "categoryId": "family-route",
            "label": "亲子路线",
            "routes": [
                {
                    "id": "family-water",
                    "title": "亲子玩水",
                    "subtitle": "贵州·轻松节奏与自然课堂",
                    "image": "https://example.test/family-water.jpg",
                    "routeCount": 4,
                    "demandKeyword": "亲子玩水",
                }
            ],
        }
    ]
    assert "playRecommendations" not in payload


def test_public_home_returns_rendering_fields_for_all_sections():
    app = create_app()
    fake_db = FakeDb(
        items_by_model={
            HomeTeamBuilding: [make_team()],
            HomeWildArchive: [make_archive()],
        }
    )
    app.dependency_overrides[get_db] = lambda: fake_db
    try:
        response = TestClient(app).get("/api/public/home")
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 200
    assert response.json() == {
        "code": 200,
        "msg": "success",
        "data": {
            "experiences": [],
            "teamBuildings": [
                {
                    "id": "wild-challenge",
                    "tag": "户外挑战",
                    "title": "山野挑战，共创极境",
                    "description": "洞穴、瀑降与协作，适合 10-30 人。",
                    "image": "https://example.test/team.jpg",
                    "demandKeyword": "户外团建",
                }
            ],
            "wildArchives": [
                {
                    "id": "hundred-meter-descent",
                    "title": "百米自降",
                    "image": "https://example.test/archive.jpg",
                    "demandKeyword": "悬崖瀑降",
                    "photoCount": 2,
                }
            ],
        },
    }


def test_public_wild_archive_list_returns_photo_count():
    archive = make_archive()
    app = create_app()
    fake_db = FakeDb(items_by_model={HomeWildArchive: [archive]})
    app.dependency_overrides[get_db] = lambda: fake_db
    try:
        response = TestClient(app).get("/api/public/home/wild-archives")
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 200
    assert response.json()["data"]["items"][0] == {
        "id": "hundred-meter-descent",
        "title": "百米自降",
        "image": "https://example.test/archive.jpg",
        "demandKeyword": "悬崖瀑降",
        "photoCount": 2,
    }


def test_public_wild_archive_detail_returns_all_images():
    archive = make_archive()
    app = create_app()
    fake_db = FakeDb(scalar_values=[archive])
    app.dependency_overrides[get_db] = lambda: fake_db
    try:
        response = TestClient(app).get("/api/public/home/wild-archives/hundred-meter-descent")
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 200
    assert response.json()["data"]["title"] == "百米自降"
    assert response.json()["data"]["images"] == [
        "https://example.test/archive.jpg",
        "https://example.test/archive-2.jpg",
    ]


def test_public_team_building_detail_returns_long_form_content():
    team = make_team()
    app = create_app()
    fake_db = FakeDb(scalar_values=[team])
    app.dependency_overrides[get_db] = lambda: fake_db
    try:
        response = TestClient(app).get("/api/public/home/team-buildings/wild-challenge")
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 200
    assert response.json() == {
        "code": 200,
        "msg": "success",
        "data": {
            "id": "wild-challenge",
            "tag": "户外挑战",
            "title": "山野挑战，共创极境",
            "description": "洞穴、瀑降与协作，适合 10-30 人。",
            "image": "https://example.test/team.jpg",
            "demandKeyword": "户外团建",
            "detailSubtitle": "越过山丘，向来处去",
            "detailParagraphs": [
                "真正的贵州，从未被写进攻略里的山野故事。",
                "我们用一次次出发，把团队重新带回自然。",
            ],
        },
    }


def test_public_team_building_detail_returns_not_found_for_missing_item():
    app = create_app()
    app.dependency_overrides[get_db] = lambda: FakeDb(scalar_values=[None])
    try:
        response = TestClient(app).get("/api/public/home/team-buildings/missing")
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 404
    assert response.json()["msg"] == "团队共创不存在"


def test_public_team_building_detail_falls_back_to_legacy_description():
    team = make_team(detailSubtitle="", detailParagraphs=[])
    app = create_app()
    fake_db = FakeDb(scalar_values=[team])
    app.dependency_overrides[get_db] = lambda: fake_db
    try:
        response = TestClient(app).get("/api/public/home/team-buildings/wild-challenge")
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 200
    assert response.json()["data"]["detailSubtitle"] == team.description
    assert response.json()["data"]["detailParagraphs"] == [team.description]