package repository

import (
	"context"

	agentdto "github.com/kandev/kandev/internal/agent/dto"
	"github.com/kandev/kandev/internal/task/models"
	v1 "github.com/kandev/kandev/pkg/api/v1"
)

// WorkspaceRepository handles workspace CRUD.
type WorkspaceRepository interface {
	CreateWorkspace(ctx context.Context, workspace *models.Workspace) error
	GetWorkspace(ctx context.Context, id string) (*models.Workspace, error)
	UpdateWorkspace(ctx context.Context, workspace *models.Workspace) error
	DeleteWorkspace(ctx context.Context, id string) error
	ListWorkspaces(ctx context.Context) ([]*models.Workspace, error)
}

// TaskRepository handles task CRUD and workflow placement.
// Note: models.TaskRepository is a struct in internal/task/models; no Go conflict exists.
type TaskRepository interface {
	CreateTask(ctx context.Context, task *models.Task) error
	GetTask(ctx context.Context, id string) (*models.Task, error)
	UpdateTask(ctx context.Context, task *models.Task) error
	DeleteTask(ctx context.Context, id string) error
	ListTasks(ctx context.Context, workflowID string) ([]*models.Task, error)
	ListTasksByWorkspace(ctx context.Context, workspaceID, workflowID, repositoryID, query string, page, pageSize int, includeArchived, includeEphemeral, onlyEphemeral, excludeConfig bool) ([]*models.Task, int, error)
	ListTasksByWorkflowStep(ctx context.Context, workflowStepID string) ([]*models.Task, error)
	ArchiveTask(ctx context.Context, id string) error
	ListTasksForAutoArchive(ctx context.Context) ([]*models.Task, error)
	UpdateTaskState(ctx context.Context, id string, state v1.TaskState) error
	CountTasksByWorkflow(ctx context.Context, workflowID string) (int, error)
	CountTasksByWorkflowStep(ctx context.Context, stepID string) (int, error)
	AddTaskToWorkflow(ctx context.Context, taskID, workflowID, workflowStepID string, position int) error
	RemoveTaskFromWorkflow(ctx context.Context, taskID, workflowID string) error
}

// TaskRepoRepository handles the task↔repository junction table (models.TaskRepository rows).
// Named TaskRepoRepository to reduce reader confusion with the TaskRepository sub-interface above.
type TaskRepoRepository interface {
	CreateTaskRepository(ctx context.Context, taskRepo *models.TaskRepository) error
	GetTaskRepository(ctx context.Context, id string) (*models.TaskRepository, error)
	ListTaskRepositories(ctx context.Context, taskID string) ([]*models.TaskRepository, error)
	ListTaskRepositoriesByTaskIDs(ctx context.Context, taskIDs []string) (map[string][]*models.TaskRepository, error)
	UpdateTaskRepository(ctx context.Context, taskRepo *models.TaskRepository) error
	DeleteTaskRepository(ctx context.Context, id string) error
	DeleteTaskRepositoriesByTask(ctx context.Context, taskID string) error
	GetPrimaryTaskRepository(ctx context.Context, taskID string) (*models.TaskRepository, error)
}

// WorkflowRepository handles workflow CRUD.
type WorkflowRepository interface {
	CreateWorkflow(ctx context.Context, workflow *models.Workflow) error
	GetWorkflow(ctx context.Context, id string) (*models.Workflow, error)
	UpdateWorkflow(ctx context.Context, workflow *models.Workflow) error
	DeleteWorkflow(ctx context.Context, id string) error
	ListWorkflows(ctx context.Context, workspaceID string, includeHidden bool) ([]*models.Workflow, error)
	ReorderWorkflows(ctx context.Context, workspaceID string, workflowIDs []string) error
}

// MessageRepository handles message persistence and lookups.
type MessageRepository interface {
	CreateMessage(ctx context.Context, message *models.Message) error
	GetMessage(ctx context.Context, id string) (*models.Message, error)
	GetMessageByToolCallID(ctx context.Context, sessionID, toolCallID string) (*models.Message, error)
	GetMessageByPendingID(ctx context.Context, sessionID, pendingID string) (*models.Message, error)
	FindMessageByPendingID(ctx context.Context, pendingID string) (*models.Message, error)
	UpdateMessage(ctx context.Context, message *models.Message) error
	ListMessages(ctx context.Context, sessionID string) ([]*models.Message, error)
	ListMessagesPaginated(ctx context.Context, sessionID string, opts models.ListMessagesOptions) ([]*models.Message, bool, error)
	SearchMessages(ctx context.Context, sessionID string, opts models.SearchMessagesOptions) ([]*models.Message, error)
	DeleteMessage(ctx context.Context, id string) error
}

// TurnRepository handles conversation turn persistence.
type TurnRepository interface {
	CreateTurn(ctx context.Context, turn *models.Turn) error
	GetTurn(ctx context.Context, id string) (*models.Turn, error)
	GetActiveTurnBySessionID(ctx context.Context, sessionID string) (*models.Turn, error)
	UpdateTurn(ctx context.Context, turn *models.Turn) error
	CompleteTurn(ctx context.Context, id string) error
	CompletePendingToolCallsForTurn(ctx context.Context, turnID string) (int64, error)
	ListTurnsBySession(ctx context.Context, sessionID string) ([]*models.Turn, error)
}

// SessionRepository handles task session lifecycle and workflow-session relationships.
type SessionRepository interface {
	CreateTaskSession(ctx context.Context, session *models.TaskSession) error
	GetTaskSession(ctx context.Context, id string) (*models.TaskSession, error)
	GetTaskSessionByTaskID(ctx context.Context, taskID string) (*models.TaskSession, error)
	GetActiveTaskSessionByTaskID(ctx context.Context, taskID string) (*models.TaskSession, error)
	UpdateTaskSession(ctx context.Context, session *models.TaskSession) error
	UpdateTaskSessionState(ctx context.Context, id string, state models.TaskSessionState, errorMessage string) error
	ListTaskSessions(ctx context.Context, taskID string) ([]*models.TaskSession, error)
	ListActiveTaskSessions(ctx context.Context) ([]*models.TaskSession, error)
	ListActiveTaskSessionsByTaskID(ctx context.Context, taskID string) ([]*models.TaskSession, error)
	HasActiveTaskSessionsByAgentProfile(ctx context.Context, agentProfileID string) (bool, error)
	GetActiveTaskInfoByAgentProfile(ctx context.Context, agentProfileID string) ([]agentdto.ActiveTaskInfo, error)
	HasActiveTaskSessionsByExecutor(ctx context.Context, executorID string) (bool, error)
	HasActiveTaskSessionsByEnvironment(ctx context.Context, environmentID string) (bool, error)
	HasActiveTaskSessionsByRepository(ctx context.Context, repositoryID string) (bool, error)
	DeleteEphemeralTasksByAgentProfile(ctx context.Context, agentProfileID string) (int64, error)
	DeleteTaskSession(ctx context.Context, id string) error
	GetPrimarySessionByTaskID(ctx context.Context, taskID string) (*models.TaskSession, error)
	GetPrimarySessionIDsByTaskIDs(ctx context.Context, taskIDs []string) (map[string]string, error)
	GetSessionCountsByTaskIDs(ctx context.Context, taskIDs []string) (map[string]int, error)
	GetPrimarySessionInfoByTaskIDs(ctx context.Context, taskIDs []string) (map[string]*models.TaskSession, error)
	SetSessionPrimary(ctx context.Context, sessionID string) error
	UpdateSessionReviewStatus(ctx context.Context, sessionID string, status string) error
	UpdateSessionMetadata(ctx context.Context, sessionID string, metadata map[string]interface{}) error
	SetSessionMetadataKey(ctx context.Context, sessionID, key string, value interface{}) error
}

// SessionWorktreeRepository handles the task session↔worktree association.
type SessionWorktreeRepository interface {
	CreateTaskSessionWorktree(ctx context.Context, sessionWorktree *models.TaskSessionWorktree) error
	UpdateTaskSessionWorktreeBranch(ctx context.Context, sessionID, branch string) error
	ListTaskSessionWorktrees(ctx context.Context, sessionID string) ([]*models.TaskSessionWorktree, error)
	ListWorktreesBySessionIDs(ctx context.Context, sessionIDs []string) (map[string][]*models.TaskSessionWorktree, error)
	DeleteTaskSessionWorktree(ctx context.Context, id string) error
	DeleteTaskSessionWorktreesBySession(ctx context.Context, sessionID string) error
}

// GitSnapshotRepository handles git snapshots and session commit records.
type GitSnapshotRepository interface {
	CreateGitSnapshot(ctx context.Context, snapshot *models.GitSnapshot) error
	GetLatestGitSnapshot(ctx context.Context, sessionID string) (*models.GitSnapshot, error)
	GetFirstGitSnapshot(ctx context.Context, sessionID string) (*models.GitSnapshot, error)
	GetGitSnapshotsBySession(ctx context.Context, sessionID string, limit int) ([]*models.GitSnapshot, error)
	CreateSessionCommit(ctx context.Context, commit *models.SessionCommit) error
	GetSessionCommits(ctx context.Context, sessionID string) ([]*models.SessionCommit, error)
	GetLatestSessionCommit(ctx context.Context, sessionID string) (*models.SessionCommit, error)
	DeleteSessionCommit(ctx context.Context, id string) error
}

// RepositoryEntityRepository handles git repository entity CRUD and repository scripts.
// Named RepositoryEntityRepository to avoid conflation with the Repository interface itself;
// mirrors the sqlite/repository_entity.go implementation file.
type RepositoryEntityRepository interface {
	CreateRepository(ctx context.Context, repository *models.Repository) error
	GetRepository(ctx context.Context, id string) (*models.Repository, error)
	UpdateRepository(ctx context.Context, repository *models.Repository) error
	DeleteRepository(ctx context.Context, id string) error
	ListRepositories(ctx context.Context, workspaceID string) ([]*models.Repository, error)
	CreateRepositoryScript(ctx context.Context, script *models.RepositoryScript) error
	GetRepositoryScript(ctx context.Context, id string) (*models.RepositoryScript, error)
	UpdateRepositoryScript(ctx context.Context, script *models.RepositoryScript) error
	DeleteRepositoryScript(ctx context.Context, id string) error
	ListRepositoryScripts(ctx context.Context, repositoryID string) ([]*models.RepositoryScript, error)
	ListScriptsByRepositoryIDs(ctx context.Context, repoIDs []string) (map[string][]*models.RepositoryScript, error)
	GetRepositoryByProviderInfo(ctx context.Context, workspaceID, provider, owner, name string) (*models.Repository, error)
}

// ExecutorRepository handles executor CRUD, executor profiles, and running state.
type ExecutorRepository interface {
	CreateExecutor(ctx context.Context, executor *models.Executor) error
	GetExecutor(ctx context.Context, id string) (*models.Executor, error)
	UpdateExecutor(ctx context.Context, executor *models.Executor) error
	DeleteExecutor(ctx context.Context, id string) error
	ListExecutors(ctx context.Context) ([]*models.Executor, error)
	CreateExecutorProfile(ctx context.Context, profile *models.ExecutorProfile) error
	GetExecutorProfile(ctx context.Context, id string) (*models.ExecutorProfile, error)
	UpdateExecutorProfile(ctx context.Context, profile *models.ExecutorProfile) error
	DeleteExecutorProfile(ctx context.Context, id string) error
	ListExecutorProfiles(ctx context.Context, executorID string) ([]*models.ExecutorProfile, error)
	ListAllExecutorProfiles(ctx context.Context) ([]*models.ExecutorProfile, error)
	ListExecutorsRunning(ctx context.Context) ([]*models.ExecutorRunning, error)
	UpsertExecutorRunning(ctx context.Context, running *models.ExecutorRunning) error
	GetExecutorRunningBySessionID(ctx context.Context, sessionID string) (*models.ExecutorRunning, error)
	DeleteExecutorRunningBySessionID(ctx context.Context, sessionID string) error
	// HasExecutorRunningRow returns true if a row exists for the session.
	// Used to decide "session has been launched at least once" without loading the full row.
	HasExecutorRunningRow(ctx context.Context, sessionID string) (bool, error)
	// UpdateResumeToken performs a CAS-style narrow update of resume_token + last_message_uuid
	// scoped to the row's current agent_execution_id. If the row's agent_execution_id no longer
	// matches expectedExecID (i.e. a new execution has taken over), returns models.ErrExecutionRotated
	// and writes nothing. Use when persisting state from a specific execution that may have been
	// replaced concurrently — typically resume tokens emitted by ACP session events.
	UpdateResumeToken(ctx context.Context, sessionID, expectedExecID, resumeToken, lastMessageUUID string) error
}

// EnvironmentRepository handles environment CRUD.
type EnvironmentRepository interface {
	CreateEnvironment(ctx context.Context, environment *models.Environment) error
	GetEnvironment(ctx context.Context, id string) (*models.Environment, error)
	UpdateEnvironment(ctx context.Context, environment *models.Environment) error
	DeleteEnvironment(ctx context.Context, id string) error
	ListEnvironments(ctx context.Context) ([]*models.Environment, error)
}

// TaskEnvironmentRepository handles per-task execution environment instances
// and their per-repository child rows.
type TaskEnvironmentRepository interface {
	CreateTaskEnvironment(ctx context.Context, env *models.TaskEnvironment) error
	GetTaskEnvironment(ctx context.Context, id string) (*models.TaskEnvironment, error)
	GetTaskEnvironmentByTaskID(ctx context.Context, taskID string) (*models.TaskEnvironment, error)
	UpdateTaskEnvironment(ctx context.Context, env *models.TaskEnvironment) error
	DeleteTaskEnvironment(ctx context.Context, id string) error
	DeleteTaskEnvironmentsByTask(ctx context.Context, taskID string) error
	CreateTaskEnvironmentRepo(ctx context.Context, repo *models.TaskEnvironmentRepo) error
	ListTaskEnvironmentRepos(ctx context.Context, envID string) ([]*models.TaskEnvironmentRepo, error)
	UpdateTaskEnvironmentRepo(ctx context.Context, repo *models.TaskEnvironmentRepo) error
	DeleteTaskEnvironmentRepo(ctx context.Context, id string) error
	DeleteTaskEnvironmentReposByEnv(ctx context.Context, envID string) error
}

// ReviewRepository handles session file review records.
type ReviewRepository interface {
	UpsertSessionFileReview(ctx context.Context, review *models.SessionFileReview) error
	GetSessionFileReviews(ctx context.Context, sessionID string) ([]*models.SessionFileReview, error)
	DeleteSessionFileReviews(ctx context.Context, sessionID string) error
}

// PlanRepository handles task plan CRUD and its revision history.
type PlanRepository interface {
	CreateTaskPlan(ctx context.Context, plan *models.TaskPlan) error
	GetTaskPlan(ctx context.Context, taskID string) (*models.TaskPlan, error)
	UpdateTaskPlan(ctx context.Context, plan *models.TaskPlan) error
	DeleteTaskPlan(ctx context.Context, taskID string) error

	// Revision history
	InsertTaskPlanRevision(ctx context.Context, rev *models.TaskPlanRevision) error
	UpdateTaskPlanRevision(ctx context.Context, rev *models.TaskPlanRevision) error
	GetTaskPlanRevision(ctx context.Context, id string) (*models.TaskPlanRevision, error)
	GetLatestTaskPlanRevision(ctx context.Context, taskID string) (*models.TaskPlanRevision, error)
	ListTaskPlanRevisions(ctx context.Context, taskID string, limit int) ([]*models.TaskPlanRevision, error)
	NextTaskPlanRevisionNumber(ctx context.Context, taskID string) (int, error)
	// WritePlanRevision atomically upserts the HEAD plan and writes/merges a revision in a
	// single transaction. Pass a non-nil coalesceLatestID to merge into an existing revision;
	// otherwise a new revision is appended with revision_number computed inside the tx.
	WritePlanRevision(ctx context.Context, head *models.TaskPlan, rev *models.TaskPlanRevision, coalesceLatestID *string) error
}