package projectinstance

import (
	"context"

	"chat-agent-system/internal/workflowdef"
)

// NewMemoryStore 返回内存 Store，供跨包集成测试使用。
func NewMemoryStore() Store {
	return newMemStore()
}

// TestResolver 返回最小正式商务工作流解析器。
func TestResolver() VersionResolver {
	return testResolver()
}

// ValidTestPlan 返回单阶段 intake 测试规划。
func ValidTestPlan() WorkflowPlan {
	return validPlan()
}

// StubDocChecker 内存文档批准状态探针。
type StubDocChecker struct {
	States map[string]string
}

func (s *StubDocChecker) TaskApprovalStates(_ context.Context, _ int64) (map[string]string, error) {
	if s == nil {
		return map[string]string{}, nil
	}
	return s.States, nil
}

type stubVersionResolver struct {
	versions map[string]*workflowdef.Version
	defs     map[string]*workflowdef.Definition
}

func (s *stubVersionResolver) GetDefinitionByKey(_ context.Context, key string) (*workflowdef.Definition, error) {
	d, ok := s.defs[key]
	if !ok {
		return nil, workflowdef.ErrNotFound
	}
	return d, nil
}

func (s *stubVersionResolver) GetVersion(_ context.Context, workflowID int64, version int) (*workflowdef.Version, error) {
	for _, v := range s.versions {
		if v.WorkflowID == workflowID && v.Version == version {
			copyV := *v
			return &copyV, nil
		}
	}
	return nil, workflowdef.ErrNotFound
}

func (s *stubVersionResolver) ListDefinitions(_ context.Context) ([]workflowdef.Definition, error) {
	out := make([]workflowdef.Definition, 0, len(s.defs))
	for _, d := range s.defs {
		out = append(out, *d)
	}
	return out, nil
}

func disabledDocResolver() *stubVersionResolver {
	r := testResolver()
	r.versions[workflowdef.OfficialKeyMain].Definition.Stages[0].DocTasks = append(
		r.versions[workflowdef.OfficialKeyMain].Definition.Stages[0].DocTasks,
		workflowdef.DocTaskDef{
			Key: "research", Title: "市场调研", CreatorConfigurable: true, BlockingWhenEnabled: false, DefaultEnabled: false,
			OutputDocType: "research", OutputDocTitle: "市场调研",
		},
	)
	return r
}

func testResolver() *stubVersionResolver {
	key := workflowdef.OfficialKeyMain
	ver := &workflowdef.Version{
		ID: 100, WorkflowID: 10, Version: 1, Status: workflowdef.StatusPublished,
		WorkflowKey: key, WorkflowName: workflowdef.OfficialWorkflowName(key),
		Definition: workflowdef.VersionDefinition{
			SchemaVersion: 2,
			WorkflowKey:   key,
			Stages: []workflowdef.StageDef{{
				Key: "V0.1_triage", Name: "V0.1 需求摸底", Optional: false, Position: 10,
				DocTasks: []workflowdef.DocTaskDef{{
					Key: "intake", Title: "用户初始需求收集表", CreatorConfigurable: true, BlockingWhenEnabled: true, DefaultEnabled: true,
					OutputDocType: "intake", OutputDocTitle: "用户初始需求收集表",
				}},
			}},
		},
	}
	return &stubVersionResolver{
		defs: map[string]*workflowdef.Definition{
			key: {ID: 10, Key: key, Name: workflowdef.OfficialWorkflowName(key), LatestPublishedVersion: 1},
		},
		versions: map[string]*workflowdef.Version{key: ver},
	}
}

// OptionalDutyResolver 导出含可裁剪 research 文档的测试定义。
func OptionalDutyResolver() VersionResolver {
	return optionalDutyResolver()
}

// OptionalDutyPlan 导出一份 full + none 测试规划。
func OptionalDutyPlan(intake, research DocDuty) WorkflowPlan {
	return optionalDutyPlan(intake, research)
}

func optionalDutyResolver() *stubVersionResolver {
	r := testResolver()
	r.versions[workflowdef.OfficialKeyMain].Definition.Stages[0].DocTasks = []workflowdef.DocTaskDef{
		{
			Key: "intake", Title: "用户初始需求收集表", CreatorConfigurable: true, BlockingWhenEnabled: true, DefaultEnabled: true,
			OutputDocType: "intake", OutputDocTitle: "用户初始需求收集表",
		},
		{
			Key: "research", Title: "市场调研", CreatorConfigurable: true, BlockingWhenEnabled: false, DefaultEnabled: true,
			OutputDocType: "research", OutputDocTitle: "市场调研",
		},
	}
	return r
}

func requiredDutyResolver() *stubVersionResolver {
	r := testResolver()
	r.versions[workflowdef.OfficialKeyMain].Definition.Stages[0].DocTasks[0].Required = true
	r.versions[workflowdef.OfficialKeyMain].Definition.Stages[0].DocTasks[0].CreatorConfigurable = false
	return r
}

func optionalDutyPlan(intake, research DocDuty) WorkflowPlan {
	return WorkflowPlan{
		WorkflowDefinitionKey: workflowdef.OfficialKeyMain,
		WorkflowVersion:       1,
		Stages: []StagePlan{{
			StageKey: "V0.1_triage", Enabled: true,
			DocTasks: []DocTaskPlan{
				{TaskKey: "intake", Enabled: true, Duties: intake},
				{TaskKey: "research", Enabled: true, Duties: research},
			},
		}},
	}
}

func validPlan() WorkflowPlan {
	return WorkflowPlan{
		WorkflowDefinitionKey: workflowdef.OfficialKeyMain,
		WorkflowVersion:       1,
		Stages: []StagePlan{{
			StageKey: "V0.1_triage", Enabled: true,
			DocTasks: []DocTaskPlan{{
				TaskKey: "intake", Enabled: true,
				Duties:  DocDuty{AuthorUserID: 1, ReviewerUserID: 2, ApproverUserID: 3},
			}},
		}},
	}
}