//go:build e2e

package e2e

import (
	"encoding/json"
	"fmt"
	"net/http"
	"testing"

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

// TestJourney_TenantAdminCustomRole 模擬 Tenant Admin 為一個新工種「qa_engineer」
// 從零建出可用角色的流程：
//   建 Role → 從 catalog 取 perm id → 全量 PUT 權限 → 設 IdP Mapping → 指派給 user
//   → 用該 user 視角看 /permissions/me 確認權限生效 → 撤銷 → 刪 mapping → 刪 role
//
// 整段都用 seed owner token；no-role user 用來驗證「被指派後拿到權限」。
func TestJourney_TenantAdminCustomRole(t *testing.T) {
	j := NewJourney(t, "J-2", "Tenant Admin 從零建立 qa_engineer 角色 → 指派 → 驗證 → 撤銷")
	defer j.Summary()

	owner := NewClient(t)
	noRole := NewNoRoleClient(t)

	var (
		roleKey      = "journey_qa_engineer"
		externalKey  = fmt.Sprintf("journey-qa-group-%s", noRole.Fixture.UID)
		roleID       string
		permissionID string
	)

	// 清掉殘留（前一輪可能 fail 沒走到清理 step）
	t.Cleanup(func() {
		_, _ = owner.Do(t, http.MethodDelete, "/api/v1/permissions/role-mappings", map[string]string{
			"external_source": "zitadel",
			"external_key":    externalKey,
		}, true)
		if roleID != "" {
			_, _ = owner.Do(t, http.MethodDelete, "/api/v1/permissions/users/"+noRole.Fixture.UID+"/roles/"+roleID, nil, true)
			_, _ = owner.Do(t, http.MethodDelete, "/api/v1/permissions/roles/"+roleID, nil, true)
		}
	})

	j.Step("1", "POST /permissions/roles — 建立 qa_engineer 角色", func(t *testing.T) {
		env := owner.DoExpectOK(t, http.MethodPost, "/api/v1/permissions/roles", map[string]string{
			"key":          roleKey,
			"display_name": "QA Engineer",
			"status":       "open",
		}, true)
		var role struct {
			ID  string `json:"id"`
			Key string `json:"key"`
		}
		require.NoError(t, json.Unmarshal(env.Data, &role))
		require.Equal(t, roleKey, role.Key)
		require.NotEmpty(t, role.ID)
		roleID = role.ID
	})

	j.Step("2", "GET /permissions/catalog — 從平台 catalog 撈第一個 leaf permission id", func(t *testing.T) {
		permissionID = firstCatalogPermissionID(t, owner)
		require.NotEmpty(t, permissionID)
	})

	j.Step("3", "PUT /permissions/roles/:id/permissions — 把選到的 permission 灌進 role", func(t *testing.T) {
		require.NotEmpty(t, roleID)
		require.NotEmpty(t, permissionID)
		owner.DoExpectOK(t, http.MethodPut, "/api/v1/permissions/roles/"+roleID+"/permissions", map[string][]string{
			"permission_ids": {permissionID},
		}, true)

		// 讀回比對：parent closure 會把祖先一起加進去，所以集合 >= 1 + 必含 permissionID
		env := owner.DoExpectOK(t, http.MethodGet, "/api/v1/permissions/roles/"+roleID+"/permissions", nil, true)
		var list struct {
			Permissions []struct {
				ID string `json:"id"`
			} `json:"permissions"`
		}
		require.NoError(t, json.Unmarshal(env.Data, &list))
		found := false
		for _, p := range list.Permissions {
			if p.ID == permissionID {
				found = true
				break
			}
		}
		require.True(t, found)
	})

	j.Step("4", "PUT /permissions/role-mappings — 設定 zitadel:qa-group → qa_engineer 對映", func(t *testing.T) {
		env := owner.DoExpectOK(t, http.MethodPut, "/api/v1/permissions/role-mappings", map[string]string{
			"external_source":   "zitadel",
			"external_key":      externalKey,
			"internal_role_key": roleKey,
		}, true)
		var mapping struct {
			ExternalKey     string `json:"external_key"`
			InternalRoleKey string `json:"internal_role_key"`
		}
		require.NoError(t, json.Unmarshal(env.Data, &mapping))
		require.Equal(t, externalKey, mapping.ExternalKey)
		require.Equal(t, roleKey, mapping.InternalRoleKey)
	})

	j.Step("5", "POST /permissions/users/:uid/roles — 把 qa_engineer 手動指派給 no-role user", func(t *testing.T) {
		require.NotEmpty(t, roleID)
		owner.DoExpectOK(t, http.MethodPost, "/api/v1/permissions/users/"+noRole.Fixture.UID+"/roles", map[string]string{
			"role_id": roleID,
		}, true)
	})

	j.Step("6", "GET /permissions/me (no-role user 視角) — 確認新角色 + 權限都拿到了", func(t *testing.T) {
		env := noRole.DoExpectOK(t, http.MethodGet, "/api/v1/permissions/me?include_tree=false", nil, true)
		var data struct {
			Roles       []string          `json:"roles"`
			Permissions map[string]string `json:"permissions"`
		}
		require.NoError(t, json.Unmarshal(env.Data, &data))
		require.Contains(t, data.Roles, roleKey, "no-role user should now have qa_engineer")
		require.NotEmpty(t, data.Permissions, "expected non-empty permissions after role assignment")
	})

	j.Step("7", "DELETE /permissions/users/:uid/roles/:id — 撤銷指派", func(t *testing.T) {
		require.NotEmpty(t, roleID)
		owner.DoExpectOK(t, http.MethodDelete, "/api/v1/permissions/users/"+noRole.Fixture.UID+"/roles/"+roleID, nil, true)

		env := noRole.DoExpectOK(t, http.MethodGet, "/api/v1/permissions/me?include_tree=false", nil, true)
		var data struct {
			Roles []string `json:"roles"`
		}
		require.NoError(t, json.Unmarshal(env.Data, &data))
		require.NotContains(t, data.Roles, roleKey)
	})

	j.Step("8", "DELETE /permissions/role-mappings + /roles — 收尾刪 mapping + role", func(t *testing.T) {
		owner.DoExpectOK(t, http.MethodDelete, "/api/v1/permissions/role-mappings", map[string]string{
			"external_source": "zitadel",
			"external_key":    externalKey,
		}, true)
		require.NotEmpty(t, roleID)
		owner.DoExpectOK(t, http.MethodDelete, "/api/v1/permissions/roles/"+roleID, nil, true)
		// 標記已清，t.Cleanup 那邊就不會再重複打
		roleID = ""
	})
}