// Copyright 2026 tamakyi. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.

package db

import (
	"context"
	"testing"
	"time"

	"github.com/stretchr/testify/require"
)

// TestRestrictions 覆盖站方处置的读写语义与「L1 停止分发」的曝光摘除。
// 这些行为没有管理后台兜底（处置只能经 CLI 写入），一旦语义写错无法从界面发现，
// 因此用数据库测试把「替换 / 到期 / 撤销 / 曝光排除」四条钉死。
func TestRestrictions(t *testing.T) {
	database, cleanup := newTestDB(t)
	ctx := context.Background()

	usersStore := NewUsersStore(database)
	store := NewRestrictionsStore(database)

	t.Cleanup(func() {
		if err := cleanup("users", "user_restrictions"); err != nil {
			t.Fatal(err)
		}
	})

	require.NoError(t, usersStore.Create(ctx, CreateUserOptions{
		Name: "Box Owner", Password: "super_secret", Email: "r@example.com", Domain: "rbox",
	}))
	owner, err := usersStore.GetByDomain(ctx, "rbox")
	require.NoError(t, err)

	require.NoError(t, usersStore.Create(ctx, CreateUserOptions{
		Name: "Other Owner", Password: "super_secret", Email: "o@example.com", Domain: "obox",
	}))
	other, err := usersStore.GetByDomain(ctx, "obox")
	require.NoError(t, err)

	// 两个箱主都上首页，用于验证处置后是否被摘除。
	require.NoError(t, usersStore.UpdateTags(ctx, owner.ID, UpdateTagsOptions{Tags: "test", ShowInHome: true}))
	require.NoError(t, usersStore.UpdateTags(ctx, other.ID, UpdateTagsOptions{Tags: "test", ShowInHome: true}))

	// 无处置时：不排除任何人。
	level, active, err := store.ActiveLevel(ctx, owner.ID)
	require.NoError(t, err)
	require.Equal(t, RestrictionLevel(""), level)
	require.Nil(t, active)

	list, _, err := usersStore.GetShowInHome(ctx, 1, 10, "latest")
	require.NoError(t, err)
	require.Len(t, list, 2)

	// 施加 L1。
	created, err := store.Create(ctx, CreateRestrictionOptions{
		UserID: owner.ID, Level: string(RestrictionL1), Reason: "组织挂人", CreatedBy: "test", Days: 7,
	})
	require.NoError(t, err)
	require.WithinDuration(t, time.Now().AddDate(0, 0, 7), created.ExpiresAt, time.Minute)

	level, active, err = store.ActiveLevel(ctx, owner.ID)
	require.NoError(t, err)
	require.Equal(t, RestrictionL1, level)
	require.NotNil(t, active)
	require.Equal(t, "组织挂人", active.Reason)

	// L1 的核心语义：被处置箱主从首页 / 探索的展示池里摘除。
	list, _, err = usersStore.GetShowInHome(ctx, 1, 10, "latest")
	require.NoError(t, err)
	require.Len(t, list, 1)
	require.Equal(t, other.ID, list[0].ID)

	// 批量版本只返回被处置者。
	levels, err := store.ActiveLevels(ctx, []uint{owner.ID, other.ID})
	require.NoError(t, err)
	require.Equal(t, map[uint]RestrictionLevel{owner.ID: RestrictionL1}, levels)

	// 替换语义：升级到 L3 后，旧记录保留但被撤销，同一时刻只有一条生效。
	_, err = store.Create(ctx, CreateRestrictionOptions{
		UserID: owner.ID, Level: string(RestrictionL3), Reason: "升级", CreatedBy: "test", Days: 3,
	})
	require.NoError(t, err)

	level, _, err = store.ActiveLevel(ctx, owner.ID)
	require.NoError(t, err)
	require.Equal(t, RestrictionL3, level)

	history, err := store.ListByUserID(ctx, owner.ID)
	require.NoError(t, err)
	require.Len(t, history, 2)
	// ListByUserID 按创建时间倒序，第一条是新的 L3（未撤销），第二条是已撤销的 L1。
	require.Equal(t, string(RestrictionL3), history[0].Level)
	require.Nil(t, history[0].RevokedAt)
	require.Equal(t, string(RestrictionL1), history[1].Level)
	require.NotNil(t, history[1].RevokedAt)

	// 到期即失效：直接把到期时间改到过去，ActiveLevel 必须返回空（处置自动解除，不需要定时任务）。
	require.NoError(t, database.Model(&UserRestriction{}).
		Where("user_id = ? AND revoked_at IS NULL", owner.ID).
		Update("expires_at", time.Now().Add(-time.Minute)).Error)

	level, active, err = store.ActiveLevel(ctx, owner.ID)
	require.NoError(t, err)
	require.Equal(t, RestrictionLevel(""), level)
	require.Nil(t, active)

	// 过期后曝光自动恢复。
	list, _, err = usersStore.GetShowInHome(ctx, 1, 10, "latest")
	require.NoError(t, err)
	require.Len(t, list, 2)

	// 撤销语义：有效期内撤销后立即恢复可见。
	_, err = store.Create(ctx, CreateRestrictionOptions{
		UserID: owner.ID, Level: string(RestrictionL1), Reason: "再处置", CreatedBy: "test", Days: 7,
	})
	require.NoError(t, err)

	affected, err := store.RevokeActive(ctx, owner.ID)
	require.NoError(t, err)
	require.EqualValues(t, 1, affected)

	list, _, err = usersStore.GetShowInHome(ctx, 1, 10, "latest")
	require.NoError(t, err)
	require.Len(t, list, 2)

	// 幂等：再次撤销不再有任何生效记录。
	affected, err = store.RevokeActive(ctx, owner.ID)
	require.NoError(t, err)
	require.EqualValues(t, 0, affected)
}

// TestRestrictionLevelValidation 防止脏级别进入 ORDER BY level DESC 的排序（"L9" 会排在 "L4" 之后）。
func TestRestrictionLevelValidation(t *testing.T) {
	require.True(t, IsValidRestrictionLevel(string(RestrictionL1)))
	require.True(t, IsValidRestrictionLevel(string(RestrictionL4)))
	require.False(t, IsValidRestrictionLevel("L5"))
	require.False(t, IsValidRestrictionLevel("l1")) // 大小写敏感，避免 CLI 误传
	require.False(t, IsValidRestrictionLevel(""))
}

// TestRestrictionAtLeast 守住发布侧拦截的判定：L2 收窄公开、L3 冻结发布都依赖这个比较。
// 空级别（无处置）与未知级别必须恒为 false，否则脏数据会把正常箱主锁死。
func TestRestrictionAtLeast(t *testing.T) {
	require.True(t, RestrictionAtLeast(RestrictionL2, RestrictionL1))
	require.True(t, RestrictionAtLeast(RestrictionL4, RestrictionL3))
	require.True(t, RestrictionAtLeast(RestrictionL2, RestrictionL2))
	require.False(t, RestrictionAtLeast(RestrictionL1, RestrictionL2))
	require.False(t, RestrictionAtLeast(RestrictionL3, RestrictionL4))
	require.False(t, RestrictionAtLeast("", RestrictionL1))
	require.False(t, RestrictionAtLeast("L9", RestrictionL1))
}