package workbench

import (
	"context"
	"errors"
	"strings"
	"testing"
	"time"

	"github.com/Tencent/WeKnora/internal/types"
	"github.com/google/uuid"
)

func TestDetachPreservesNativeAndImportedHistory(t *testing.T) {
	for _, kind := range []string{"training-maps", "flows"} {
		for _, imported := range []bool{false, true} {
			t.Run(kind+map[bool]string{false: "/native", true: "/imported"}[imported], func(t *testing.T) {
				s := sqliteWorkbench(t)
				ctx := workbenchContext(1, "alice", types.TenantRoleContributor)
				parent := seedResource(t, s, 1, "alice", kind)
				task := seedResource(t, s, 1, "alice", "content-tasks")
				original := TaskData{MapID: "map", FlowID: "flow", Review: "historical review", Composed: "historical final", Segments: []Segment{{ID: "s1", Status: "accepted", Content: "historical paragraph", Review: "historical segment review", SourceIDs: []string{"source"}}}}
				if kind == "training-maps" {
					original.MapID = parent.ID
				} else {
					original.FlowID = parent.ID
				}
				task.Data = asJSON(original)
				if imported {
					task.Data["legacy_import"] = JSON{"read_only": true, "requires_review": true, "source_id": "old-task", "missing_configuration": []string{"day"}}
					task.Data["legacy_history"] = JSON{"qcreports": []JSON{{"result": "historical report", "passed": false}}}
				}
				metadata, history := compact(task.Data["legacy_import"]), compact(task.Data["legacy_history"])
				if err := s.db.Model(task).Update("data", task.Data).Error; err != nil {
					t.Fatal(err)
				}
				if w := deleteWorkbenchResource(s, ctx, parent, true); w.Code != 200 {
					t.Fatalf("detach failed: status %d", w.Code)
				}
				stored, err := s.get(ctx, task.Kind, task.ID)
				if err != nil {
					t.Fatal(err)
				}
				data, err := decode[TaskData](stored.Data)
				if err != nil {
					t.Fatal(err)
				}
				if stored.Status != "needs_configuration" || data.Review != original.Review || data.Composed != original.Composed || compact(data.Segments) != compact(original.Segments) || compact(stored.Data["legacy_import"]) != metadata || compact(stored.Data["legacy_history"]) != history {
					t.Fatal("detachment changed historical output or import metadata")
				}
				if (kind == "training-maps" && data.MapID != "") || (kind == "flows" && data.FlowID != "") {
					t.Fatal("deleted reference was retained")
				}
				for _, action := range []string{"decompose", "generate", "revise", "accept", "skip", "review", "compose"} {
					job, err := s.submit(ctx, task.Kind, task.ID, action, ActionRequest{Version: stored.Version, Advice: "advice", SegmentID: "s1"})
					if !imported && taskActionUsesOnlySavedContent(action) {
						if err != nil {
							t.Fatalf("saved prose action %s depends on detached sources: %v", action, err)
						}
						if err := s.db.Delete(job).Error; err != nil {
							t.Fatal(err)
						}
						continue
					}
					if !errors.Is(err, ErrInvalid) {
						t.Fatalf("detached task accepted action %s: %v", action, err)
					}
				}
				var jobs int64
				if err := s.db.Model(&Job{}).Count(&jobs).Error; err != nil || jobs != 0 {
					t.Fatal("rejected actions were queued")
				}
			})
		}
	}
}

func TestImportGuardsRejectExecutionBeforeAIAndAllowRename(t *testing.T) {
	for _, metadata := range []any{JSON{"read_only": true}, JSON{"requires_review": true}, JSON{"needs_configuration": true}, JSON{"missing_configuration": []string{"agent_id"}}, JSON{"read_only": "false"}, nil, "invalid"} {
		for _, kind := range []string{"training-maps", "content-tasks", "flows"} {
			r := &Resource{Kind: kind, Status: "draft", Data: JSON{"legacy_import": metadata, "legacy_history": JSON{"preserved": true}}}
			original := compact(r.Data)
			s := NewService(nil)
			var err error
			if kind == "content-tasks" {
				err = s.executeTask(context.Background(), &Job{Action: "decompose"}, r, ActionRequest{})
			} else {
				err = s.executeMap(context.Background(), &Job{Action: "generate"}, r, ActionRequest{})
			}
			if !errors.Is(err, ErrInvalid) {
				t.Fatalf("invalid imported state executed: %v", err)
			}
			if err = applyManualUpdate(r, resourceRequest{Name: "renamed", Data: r.Data}); err != nil {
				t.Fatalf("owner cannot rename historical record: %v", err)
			}
			if compact(r.Data) != original {
				t.Fatal("rejected action changed historical data")
			}
		}
	}
}

func TestCompatibleImportMetadataSurvivesActionsAndCannotBeRewritten(t *testing.T) {
	metadata := JSON{"source_id": "old-map", "read_only": false, "requires_review": false, "needs_configuration": false}
	history := JSON{"source_status": "reviewed", "source_text": "historical framework"}
	r := &Resource{Kind: "training-maps", Name: "map", Data: asJSON(MapData{Topic: "topic", AgentID: "author", DaysCount: 1, Days: []Day{{Day: 1, Title: "day", Framework: "framework"}}})}
	r.Data["legacy_import"], r.Data["legacy_history"] = metadata, history
	s := NewService(nil)
	if err := s.executeMap(context.Background(), &Job{Action: "confirm-day"}, r, ActionRequest{Day: 1}); err != nil {
		t.Fatal(err)
	}
	data, _ := decode[MapData](r.Data)
	if !data.Days[0].Confirmed || compact(r.Data["legacy_import"]) != compact(metadata) || compact(r.Data["legacy_history"]) != compact(history) {
		t.Fatal("mapped resource action lost historical metadata")
	}
	if err := applyManualUpdate(r, resourceRequest{Name: "renamed", Data: asJSON(data)}); err != nil {
		t.Fatal(err)
	}
	if compact(r.Data["legacy_import"]) != compact(metadata) || compact(r.Data["legacy_history"]) != compact(history) {
		t.Fatal("configuration update lost migration metadata")
	}
	for _, key := range legacyMetadataKeys {
		proposed := resourceData(r, data)
		proposed[key] = JSON{"changed": true}
		if err := applyManualUpdate(r, resourceRequest{Name: "renamed", Data: proposed}); !errors.Is(err, ErrInvalid) {
			t.Fatalf("reserved field %s can be rewritten: %v", key, err)
		}
	}
	if err := validateLegacyMetadataUpdate(nil, JSON{"legacy_import": metadata}); !errors.Is(err, ErrInvalid) {
		t.Fatal("client can create forged import metadata")
	}
}

func TestWorkerRejectsImportedTaskAlreadyInQueue(t *testing.T) {
	s := sqliteWorkbench(t)
	if err := s.db.AutoMigrate(&types.TenantMember{}, &types.Tenant{}); err != nil {
		t.Fatal(err)
	}
	if err := s.db.Create(&types.Tenant{ID: 1, Status: "active"}).Error; err != nil {
		t.Fatal(err)
	}
	member := types.TenantMember{TenantID: 1, UserID: "alice", Role: types.TenantRoleContributor, Status: types.TenantMemberStatusActive}
	if err := s.db.Create(&member).Error; err != nil {
		t.Fatal(err)
	}
	r := seedResource(t, s, 1, "alice", "content-tasks")
	r.Data = asJSON(TaskData{Review: "historical review", Composed: "historical final", Segments: []Segment{{ID: "s1", Content: "historical paragraph"}}})
	r.Data["legacy_import"] = JSON{"read_only": true, "requires_review": true, "needs_configuration": true}
	if err := s.db.Model(r).Update("data", r.Data).Error; err != nil {
		t.Fatal(err)
	}
	before := compact(r.Data)
	until := time.Now().Add(time.Minute)
	j := Job{ID: uuid.NewString(), TenantID: 1, OwnerID: "alice", ResourceID: r.ID, Kind: r.Kind, Action: "decompose", Status: "running", LeaseToken: "test-lease", LeaseUntil: &until, Request: asJSON(ActionRequest{Version: 1})}
	if err := s.db.Create(&j).Error; err != nil {
		t.Fatal(err)
	}
	s.run(context.Background(), &j)
	var job Job
	if err := s.db.First(&job, "id = ?", j.ID).Error; err != nil {
		t.Fatal(err)
	}
	if job.Status != "failed" || !strings.Contains(job.Error, "只读历史资料") || len(job.Generation) != 0 {
		t.Fatal("queued legacy job was not rejected before model execution")
	}
	stored, err := s.get(workbenchContext(1, "alice", types.TenantRoleContributor), r.Kind, r.ID)
	if err != nil || compact(stored.Data) != before || stored.Version != 1 {
		t.Fatal("legacy worker rejection changed history")
	}
}

func TestTaskMissingConfigurationFailsBeforeQueueing(t *testing.T) {
	s := sqliteWorkbench(t)
	r := seedResource(t, s, 1, "alice", "content-tasks")
	ctx := workbenchContext(1, "alice", types.TenantRoleContributor)
	if _, err := s.submit(ctx, r.Kind, r.ID, "decompose", ActionRequest{Version: 1}); !errors.Is(err, ErrInvalid) || !strings.Contains(err.Error(), "任务缺少") {
		t.Fatalf("missing configuration was not rejected: %v", err)
	}
}

func TestReadOnlyImportCanBeDeletedWithOriginalArchived(t *testing.T) {
	s := sqliteWorkbench(t)
	ctx := workbenchContext(1, "alice", types.TenantRoleContributor)
	r := seedResource(t, s, 1, "alice", "content-tasks")
	r.Data["legacy_import"] = JSON{"read_only": true}
	if err := s.db.Model(r).Update("data", r.Data).Error; err != nil {
		t.Fatal(err)
	}
	if response := deleteWorkbenchResource(s, ctx, r, true); response.Code != 200 {
		t.Fatalf("owner cannot delete imported resource: status %d", response.Code)
	}
	if _, err := s.get(ctx, r.Kind, r.ID); err == nil {
		t.Fatal("deleted resource remains visible")
	}
	var revision Revision
	if err := s.db.First(&revision, "resource_id = ?", r.ID).Error; err != nil || compact(revision.Data) != compact(r.Data) {
		t.Fatal("deleted import original was not archived")
	}
}

func TestTaskCannotRunUsingProtectedImportedParents(t *testing.T) {
	for _, parentKind := range []string{"training-maps", "flows"} {
		t.Run(parentKind, func(t *testing.T) {
			s := sqliteWorkbench(t)
			s.agents = generationAgentStub{}
			ctx := workbenchContext(1, "alice", types.TenantRoleContributor)
			m := seedResource(t, s, 1, "alice", "training-maps")
			m.Status = "confirmed"
			m.Data = asJSON(MapData{Days: []Day{{Day: 1, Title: "day"}}})
			flow := seedResource(t, s, 1, "alice", "flows")
			flow.Data = asJSON(FlowData{Nodes: []FlowNode{{ID: "n1", AgentID: "author"}}})
			parent := m
			if parentKind == "flows" {
				parent = flow
			}
			parent.Data["legacy_import"] = JSON{"read_only": true, "requires_review": true}
			for _, resource := range []*Resource{m, flow} {
				if err := s.db.Save(resource).Error; err != nil {
					t.Fatal(err)
				}
			}
			task := seedResource(t, s, 1, "alice", "content-tasks")
			task.Data = asJSON(TaskData{MapID: m.ID, FlowID: flow.ID, Day: 1, AgentID: "author"})
			if err := s.db.Model(task).Update("data", task.Data).Error; err != nil {
				t.Fatal(err)
			}
			if _, err := s.submit(ctx, task.Kind, task.ID, "decompose", ActionRequest{Version: 1}); !errors.Is(err, ErrInvalid) || !strings.Contains(err.Error(), "只读历史资料") {
				t.Fatalf("protected parent entered executable task: %v", err)
			}
		})
	}
}