multica/server/pkg/db/generated/chat.sql.go

// Code generated by sqlc. DO NOT EDIT.
// versions:
//   sqlc v1.31.1
// source: chat.sql

package db

import (
	"context"

	"github.com/jackc/pgx/v5/pgtype"
)

const chatSessionHasUserMessage = `-- name: ChatSessionHasUserMessage :one
SELECT EXISTS (
    SELECT 1 FROM chat_message
    WHERE chat_session_id = $1 AND role = 'user'
) AS has_user_message
`

// Reports whether a session has any human (role='user') message yet. Used to
// scope the is_agent_intro self-introduction prompt to the very first,
// server-driven turn: an intro session starts with zero user messages, so the
// opening run gets the "introduce yourself" prompt. Once the creator replies,
// later turns in the same session must fall back to the normal reply prompt
// instead of repeating the introduction every turn (MUL-4259).
func (q *Queries) ChatSessionHasUserMessage(ctx context.Context, chatSessionID pgtype.UUID) (bool, error) {
	row := q.db.QueryRow(ctx, chatSessionHasUserMessage, chatSessionID)
	var has_user_message bool
	err := row.Scan(&has_user_message)
	return has_user_message, err
}

const createChatMessage = `-- name: CreateChatMessage :one
INSERT INTO chat_message (chat_session_id, role, content, task_id, failure_reason, elapsed_ms)
VALUES ($1, $2, $3, $4, $5, $6)
RETURNING id, chat_session_id, role, content, task_id, created_at, failure_reason, elapsed_ms
`

type CreateChatMessageParams struct {
	ChatSessionID pgtype.UUID `json:"chat_session_id"`
	Role          string      `json:"role"`
	Content       string      `json:"content"`
	TaskID        pgtype.UUID `json:"task_id"`
	FailureReason pgtype.Text `json:"failure_reason"`
	ElapsedMs     pgtype.Int8 `json:"elapsed_ms"`
}

func (q *Queries) CreateChatMessage(ctx context.Context, arg CreateChatMessageParams) (ChatMessage, error) {
	row := q.db.QueryRow(ctx, createChatMessage,
		arg.ChatSessionID,
		arg.Role,
		arg.Content,
		arg.TaskID,
		arg.FailureReason,
		arg.ElapsedMs,
	)
	var i ChatMessage
	err := row.Scan(
		&i.ID,
		&i.ChatSessionID,
		&i.Role,
		&i.Content,
		&i.TaskID,
		&i.CreatedAt,
		&i.FailureReason,
		&i.ElapsedMs,
	)
	return i, err
}

const createChatSession = `-- name: CreateChatSession :one
INSERT INTO chat_session (workspace_id, agent_id, creator_id, title, runtime_id, is_agent_intro)
VALUES ($1, $2, $3, $4, (SELECT runtime_id FROM agent WHERE id = $2), $5)
RETURNING id, workspace_id, agent_id, creator_id, title, session_id, work_dir, status, created_at, updated_at, runtime_id, last_read_at, is_agent_intro, pinned_at
`

type CreateChatSessionParams struct {
	WorkspaceID  pgtype.UUID `json:"workspace_id"`
	AgentID      pgtype.UUID `json:"agent_id"`
	CreatorID    pgtype.UUID `json:"creator_id"`
	Title        string      `json:"title"`
	IsAgentIntro bool        `json:"is_agent_intro"`
}

func (q *Queries) CreateChatSession(ctx context.Context, arg CreateChatSessionParams) (ChatSession, error) {
	row := q.db.QueryRow(ctx, createChatSession,
		arg.WorkspaceID,
		arg.AgentID,
		arg.CreatorID,
		arg.Title,
		arg.IsAgentIntro,
	)
	var i ChatSession
	err := row.Scan(
		&i.ID,
		&i.WorkspaceID,
		&i.AgentID,
		&i.CreatorID,
		&i.Title,
		&i.SessionID,
		&i.WorkDir,
		&i.Status,
		&i.CreatedAt,
		&i.UpdatedAt,
		&i.RuntimeID,
		&i.LastReadAt,
		&i.IsAgentIntro,
		&i.PinnedAt,
	)
	return i, err
}

const createChatTask = `-- name: CreateChatTask :one
INSERT INTO agent_task_queue (
    agent_id, runtime_id, issue_id, status, priority, chat_session_id,
    initiator_user_id, originator_user_id, force_fresh_session, runtime_mcp_overlay,
    runtime_connected_apps
)
VALUES (
    $1, $2, NULL, 'queued', $3, $4, $5,
    $6,
    COALESCE($7::boolean, FALSE),
    $8,
    $9
)
RETURNING id, agent_id, issue_id, status, priority, dispatched_at, started_at, completed_at, result, error, created_at, context, runtime_id, session_id, work_dir, trigger_comment_id, chat_session_id, autopilot_run_id, attempt, max_attempts, parent_task_id, failure_reason, trigger_summary, force_fresh_session, is_leader_task, wait_reason, initiator_user_id, handoff_note, prepare_lease_expires_at, squad_id, runtime_mcp_overlay, escalation_for_task_id, fire_at, originator_user_id, runtime_connected_apps, coalesced_comment_ids
`

type CreateChatTaskParams struct {
	AgentID              pgtype.UUID `json:"agent_id"`
	RuntimeID            pgtype.UUID `json:"runtime_id"`
	Priority             int32       `json:"priority"`
	ChatSessionID        pgtype.UUID `json:"chat_session_id"`
	InitiatorUserID      pgtype.UUID `json:"initiator_user_id"`
	OriginatorUserID     pgtype.UUID `json:"originator_user_id"`
	ForceFreshSession    pgtype.Bool `json:"force_fresh_session"`
	RuntimeMcpOverlay    []byte      `json:"runtime_mcp_overlay"`
	RuntimeConnectedApps []byte      `json:"runtime_connected_apps"`
}

func (q *Queries) CreateChatTask(ctx context.Context, arg CreateChatTaskParams) (AgentTaskQueue, error) {
	row := q.db.QueryRow(ctx, createChatTask,
		arg.AgentID,
		arg.RuntimeID,
		arg.Priority,
		arg.ChatSessionID,
		arg.InitiatorUserID,
		arg.OriginatorUserID,
		arg.ForceFreshSession,
		arg.RuntimeMcpOverlay,
		arg.RuntimeConnectedApps,
	)
	var i AgentTaskQueue
	err := row.Scan(
		&i.ID,
		&i.AgentID,
		&i.IssueID,
		&i.Status,
		&i.Priority,
		&i.DispatchedAt,
		&i.StartedAt,
		&i.CompletedAt,
		&i.Result,
		&i.Error,
		&i.CreatedAt,
		&i.Context,
		&i.RuntimeID,
		&i.SessionID,
		&i.WorkDir,
		&i.TriggerCommentID,
		&i.ChatSessionID,
		&i.AutopilotRunID,
		&i.Attempt,
		&i.MaxAttempts,
		&i.ParentTaskID,
		&i.FailureReason,
		&i.TriggerSummary,
		&i.ForceFreshSession,
		&i.IsLeaderTask,
		&i.WaitReason,
		&i.InitiatorUserID,
		&i.HandoffNote,
		&i.PrepareLeaseExpiresAt,
		&i.SquadID,
		&i.RuntimeMcpOverlay,
		&i.EscalationForTaskID,
		&i.FireAt,
		&i.OriginatorUserID,
		&i.RuntimeConnectedApps,
		&i.CoalescedCommentIds,
	)
	return i, err
}

const deleteChatSession = `-- name: DeleteChatSession :exec
DELETE FROM chat_session WHERE id = $1 AND workspace_id = $2
`

type DeleteChatSessionParams struct {
	ID          pgtype.UUID `json:"id"`
	WorkspaceID pgtype.UUID `json:"workspace_id"`
}

// Hard delete. chat_message rows cascade via FK ON DELETE CASCADE; the
// chat_session_id on agent_task_queue is set NULL by FK so completed/failed
// task history survives the session being removed. Callers MUST run inside
// the same transaction that holds LockChatSessionForDelete and that has
// already cancelled any in-flight tasks (see CancelAgentTasksByChatSession)
// so the daemon does not keep running work whose result has nowhere to
// land. workspace_id in the WHERE clause is a SQL-layer tenant guard; see
// DeleteIssue.
func (q *Queries) DeleteChatSession(ctx context.Context, arg DeleteChatSessionParams) error {
	_, err := q.db.Exec(ctx, deleteChatSession, arg.ID, arg.WorkspaceID)
	return err
}

const deleteUserChatMessageByTask = `-- name: DeleteUserChatMessageByTask :one
DELETE FROM chat_message
WHERE task_id = $1 AND role = 'user'
RETURNING id, chat_session_id, role, content, task_id, created_at, failure_reason, elapsed_ms
`

func (q *Queries) DeleteUserChatMessageByTask(ctx context.Context, taskID pgtype.UUID) (ChatMessage, error) {
	row := q.db.QueryRow(ctx, deleteUserChatMessageByTask, taskID)
	var i ChatMessage
	err := row.Scan(
		&i.ID,
		&i.ChatSessionID,
		&i.Role,
		&i.Content,
		&i.TaskID,
		&i.CreatedAt,
		&i.FailureReason,
		&i.ElapsedMs,
	)
	return i, err
}

const getChatMessage = `-- name: GetChatMessage :one
SELECT id, chat_session_id, role, content, task_id, created_at, failure_reason, elapsed_ms FROM chat_message
WHERE id = $1
`

func (q *Queries) GetChatMessage(ctx context.Context, id pgtype.UUID) (ChatMessage, error) {
	row := q.db.QueryRow(ctx, getChatMessage, id)
	var i ChatMessage
	err := row.Scan(
		&i.ID,
		&i.ChatSessionID,
		&i.Role,
		&i.Content,
		&i.TaskID,
		&i.CreatedAt,
		&i.FailureReason,
		&i.ElapsedMs,
	)
	return i, err
}

const getChatSession = `-- name: GetChatSession :one
SELECT id, workspace_id, agent_id, creator_id, title, session_id, work_dir, status, created_at, updated_at, runtime_id, last_read_at, is_agent_intro, pinned_at FROM chat_session
WHERE id = $1
`

func (q *Queries) GetChatSession(ctx context.Context, id pgtype.UUID) (ChatSession, error) {
	row := q.db.QueryRow(ctx, getChatSession, id)
	var i ChatSession
	err := row.Scan(
		&i.ID,
		&i.WorkspaceID,
		&i.AgentID,
		&i.CreatorID,
		&i.Title,
		&i.SessionID,
		&i.WorkDir,
		&i.Status,
		&i.CreatedAt,
		&i.UpdatedAt,
		&i.RuntimeID,
		&i.LastReadAt,
		&i.IsAgentIntro,
		&i.PinnedAt,
	)
	return i, err
}

const getChatSessionInWorkspace = `-- name: GetChatSessionInWorkspace :one
SELECT id, workspace_id, agent_id, creator_id, title, session_id, work_dir, status, created_at, updated_at, runtime_id, last_read_at, is_agent_intro, pinned_at FROM chat_session
WHERE id = $1 AND workspace_id = $2
`

type GetChatSessionInWorkspaceParams struct {
	ID          pgtype.UUID `json:"id"`
	WorkspaceID pgtype.UUID `json:"workspace_id"`
}

func (q *Queries) GetChatSessionInWorkspace(ctx context.Context, arg GetChatSessionInWorkspaceParams) (ChatSession, error) {
	row := q.db.QueryRow(ctx, getChatSessionInWorkspace, arg.ID, arg.WorkspaceID)
	var i ChatSession
	err := row.Scan(
		&i.ID,
		&i.WorkspaceID,
		&i.AgentID,
		&i.CreatorID,
		&i.Title,
		&i.SessionID,
		&i.WorkDir,
		&i.Status,
		&i.CreatedAt,
		&i.UpdatedAt,
		&i.RuntimeID,
		&i.LastReadAt,
		&i.IsAgentIntro,
		&i.PinnedAt,
	)
	return i, err
}

const getLastChatTaskSession = `-- name: GetLastChatTaskSession :one
SELECT session_id, work_dir, runtime_id FROM agent_task_queue
WHERE chat_session_id = $1
  AND (
    status = 'completed'
    OR (
      status = 'failed'
      AND COALESCE(failure_reason, '') NOT IN ('iteration_limit', 'agent_fallback_message', 'api_invalid_request', 'codex_semantic_inactivity')
      AND NOT (COALESCE(error, '') ILIKE '%400%' AND COALESCE(error, '') ILIKE '%invalid_request_error%')
    )
  )
  AND session_id IS NOT NULL
ORDER BY completed_at DESC
LIMIT 1
`

type GetLastChatTaskSessionRow struct {
	SessionID pgtype.Text `json:"session_id"`
	WorkDir   pgtype.Text `json:"work_dir"`
	RuntimeID pgtype.UUID `json:"runtime_id"`
}

// Returns the most recent task in this chat session that managed to record a
// session_id. Includes both completed and failed tasks: even a failed task
// may have established a real agent session before failing, and we'd rather
// resume there than start over and lose conversation memory. Used as a
// fallback when chat_session.session_id is NULL. Resume-unsafe failures are
// excluded because replaying those sessions deterministically reproduces the
// same terminal state.
func (q *Queries) GetLastChatTaskSession(ctx context.Context, chatSessionID pgtype.UUID) (GetLastChatTaskSessionRow, error) {
	row := q.db.QueryRow(ctx, getLastChatTaskSession, chatSessionID)
	var i GetLastChatTaskSessionRow
	err := row.Scan(&i.SessionID, &i.WorkDir, &i.RuntimeID)
	return i, err
}

const getMostRecentUserChatMessage = `-- name: GetMostRecentUserChatMessage :one
SELECT id, chat_session_id, role, content, task_id, created_at, failure_reason, elapsed_ms FROM chat_message
WHERE chat_session_id = $1 AND role = 'user'
ORDER BY created_at DESC
LIMIT 1
`

// Returns the most recent role='user' message in a session. Used by the
// Lark `/issue` command parser: when the user types `/issue` with no
// title, the spec falls back to "use the previous user message as the
// title". Bot replies (role='assistant') are excluded — only human
// input qualifies as a fallback title source.
func (q *Queries) GetMostRecentUserChatMessage(ctx context.Context, chatSessionID pgtype.UUID) (ChatMessage, error) {
	row := q.db.QueryRow(ctx, getMostRecentUserChatMessage, chatSessionID)
	var i ChatMessage
	err := row.Scan(
		&i.ID,
		&i.ChatSessionID,
		&i.Role,
		&i.Content,
		&i.TaskID,
		&i.CreatedAt,
		&i.FailureReason,
		&i.ElapsedMs,
	)
	return i, err
}

const getPendingChatTask = `-- name: GetPendingChatTask :one
SELECT id, status, created_at FROM agent_task_queue
WHERE chat_session_id = $1 AND status IN ('queued', 'dispatched', 'running', 'waiting_local_directory')
ORDER BY created_at DESC
LIMIT 1
`

type GetPendingChatTaskRow struct {
	ID        pgtype.UUID        `json:"id"`
	Status    string             `json:"status"`
	CreatedAt pgtype.Timestamptz `json:"created_at"`
}

// Returns the most recent in-flight task for a chat session, if any.
// Used by the frontend to recover pending state after refresh / reopen.
// created_at is the anchor for the chat StatusPill timer (it computes
// elapsed = now - task.created_at), so the pill survives refresh / reopen
// without "resetting to 0s".
func (q *Queries) GetPendingChatTask(ctx context.Context, chatSessionID pgtype.UUID) (GetPendingChatTaskRow, error) {
	row := q.db.QueryRow(ctx, getPendingChatTask, chatSessionID)
	var i GetPendingChatTaskRow
	err := row.Scan(&i.ID, &i.Status, &i.CreatedAt)
	return i, err
}

const hasPendingChatTasksByCreator = `-- name: HasPendingChatTasksByCreator :one
SELECT EXISTS (
  SELECT 1
  FROM agent_task_queue atq
  JOIN chat_session cs ON cs.id = atq.chat_session_id
  WHERE atq.chat_session_id IS NOT NULL
    AND atq.status IN ('queued', 'dispatched', 'running', 'waiting_local_directory')
    AND cs.workspace_id = $1
    AND cs.creator_id = $2
    AND cs.agent_id = ANY($3::uuid[])
) AS has_pending
`

type HasPendingChatTasksByCreatorParams struct {
	WorkspaceID pgtype.UUID   `json:"workspace_id"`
	CreatorID   pgtype.UUID   `json:"creator_id"`
	AgentIds    []pgtype.UUID `json:"agent_ids"`
}

// Boolean fast-path for the FAB's "running" indicator. Returns a single
// EXISTS row instead of the full task list, so the planner can stop at the
// first matching in-flight task (LIMIT 1 semantics via EXISTS).
//
// Permission filtering is baked into the query: agent_id = ANY($3) restricts
// the result to the agents the caller may currently see, so a member who lost
// access to a private agent never gets a true from a task they can no longer
// reach. The handler must pass its resolved accessible-agent id set as $3;
// an empty array yields false.
func (q *Queries) HasPendingChatTasksByCreator(ctx context.Context, arg HasPendingChatTasksByCreatorParams) (bool, error) {
	row := q.db.QueryRow(ctx, hasPendingChatTasksByCreator, arg.WorkspaceID, arg.CreatorID, arg.AgentIds)
	var has_pending bool
	err := row.Scan(&has_pending)
	return has_pending, err
}

const linkChatMessageToTask = `-- name: LinkChatMessageToTask :exec
UPDATE chat_message
SET task_id = $2
WHERE id = $1 AND role = 'user'
`

type LinkChatMessageToTaskParams struct {
	ID     pgtype.UUID `json:"id"`
	TaskID pgtype.UUID `json:"task_id"`
}

func (q *Queries) LinkChatMessageToTask(ctx context.Context, arg LinkChatMessageToTaskParams) error {
	_, err := q.db.Exec(ctx, linkChatMessageToTask, arg.ID, arg.TaskID)
	return err
}

const listAllChatSessionsByCreator = `-- name: ListAllChatSessionsByCreator :many
SELECT cs.id, cs.workspace_id, cs.agent_id, cs.creator_id, cs.title, cs.session_id, cs.work_dir, cs.status, cs.created_at, cs.updated_at, cs.runtime_id, cs.last_read_at, cs.is_agent_intro, cs.pinned_at,
       (SELECT count(*) FROM chat_message m
          WHERE m.chat_session_id = cs.id
            AND m.role = 'assistant'
            AND m.created_at > cs.last_read_at)::int AS unread_count,
       COALESCE(lm.content, '') AS last_message_content,
       COALESCE(lm.role, '') AS last_message_role,
       lm.created_at AS last_message_at,
       lm.failure_reason AS last_message_failure_reason
FROM chat_session cs
LEFT JOIN LATERAL (
  SELECT content, role, created_at, failure_reason
    FROM chat_message m
   WHERE m.chat_session_id = cs.id
   ORDER BY m.created_at DESC
   LIMIT 1
) lm ON true
WHERE cs.workspace_id = $1 AND cs.creator_id = $2
ORDER BY (cs.pinned_at IS NOT NULL) DESC, cs.pinned_at DESC, COALESCE(lm.created_at, cs.updated_at) DESC
`

type ListAllChatSessionsByCreatorParams struct {
	WorkspaceID pgtype.UUID `json:"workspace_id"`
	CreatorID   pgtype.UUID `json:"creator_id"`
}

type ListAllChatSessionsByCreatorRow struct {
	ID                       pgtype.UUID        `json:"id"`
	WorkspaceID              pgtype.UUID        `json:"workspace_id"`
	AgentID                  pgtype.UUID        `json:"agent_id"`
	CreatorID                pgtype.UUID        `json:"creator_id"`
	Title                    string             `json:"title"`
	SessionID                pgtype.Text        `json:"session_id"`
	WorkDir                  pgtype.Text        `json:"work_dir"`
	Status                   string             `json:"status"`
	CreatedAt                pgtype.Timestamptz `json:"created_at"`
	UpdatedAt                pgtype.Timestamptz `json:"updated_at"`
	RuntimeID                pgtype.UUID        `json:"runtime_id"`
	LastReadAt               pgtype.Timestamptz `json:"last_read_at"`
	IsAgentIntro             bool               `json:"is_agent_intro"`
	PinnedAt                 pgtype.Timestamptz `json:"pinned_at"`
	UnreadCount              int32              `json:"unread_count"`
	LastMessageContent       string             `json:"last_message_content"`
	LastMessageRole          string             `json:"last_message_role"`
	LastMessageAt            pgtype.Timestamptz `json:"last_message_at"`
	LastMessageFailureReason pgtype.Text        `json:"last_message_failure_reason"`
}

func (q *Queries) ListAllChatSessionsByCreator(ctx context.Context, arg ListAllChatSessionsByCreatorParams) ([]ListAllChatSessionsByCreatorRow, error) {
	rows, err := q.db.Query(ctx, listAllChatSessionsByCreator, arg.WorkspaceID, arg.CreatorID)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	items := []ListAllChatSessionsByCreatorRow{}
	for rows.Next() {
		var i ListAllChatSessionsByCreatorRow
		if err := rows.Scan(
			&i.ID,
			&i.WorkspaceID,
			&i.AgentID,
			&i.CreatorID,
			&i.Title,
			&i.SessionID,
			&i.WorkDir,
			&i.Status,
			&i.CreatedAt,
			&i.UpdatedAt,
			&i.RuntimeID,
			&i.LastReadAt,
			&i.IsAgentIntro,
			&i.PinnedAt,
			&i.UnreadCount,
			&i.LastMessageContent,
			&i.LastMessageRole,
			&i.LastMessageAt,
			&i.LastMessageFailureReason,
		); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const listChatMessages = `-- name: ListChatMessages :many
SELECT id, chat_session_id, role, content, task_id, created_at, failure_reason, elapsed_ms FROM chat_message
WHERE chat_session_id = $1
ORDER BY created_at ASC
`

func (q *Queries) ListChatMessages(ctx context.Context, chatSessionID pgtype.UUID) ([]ChatMessage, error) {
	rows, err := q.db.Query(ctx, listChatMessages, chatSessionID)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	items := []ChatMessage{}
	for rows.Next() {
		var i ChatMessage
		if err := rows.Scan(
			&i.ID,
			&i.ChatSessionID,
			&i.Role,
			&i.Content,
			&i.TaskID,
			&i.CreatedAt,
			&i.FailureReason,
			&i.ElapsedMs,
		); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const listChatMessagesPage = `-- name: ListChatMessagesPage :many
SELECT id, chat_session_id, role, content, task_id, created_at, failure_reason, elapsed_ms FROM chat_message
WHERE chat_session_id = $1
  AND (
    $3::timestamptz IS NULL
    OR (created_at, id) < ($3::timestamptz, $4::uuid)
  )
ORDER BY created_at DESC, id DESC
LIMIT $2
`

type ListChatMessagesPageParams struct {
	ChatSessionID   pgtype.UUID        `json:"chat_session_id"`
	Limit           int32              `json:"limit"`
	BeforeCreatedAt pgtype.Timestamptz `json:"before_created_at"`
	BeforeID        pgtype.UUID        `json:"before_id"`
}

func (q *Queries) ListChatMessagesPage(ctx context.Context, arg ListChatMessagesPageParams) ([]ChatMessage, error) {
	rows, err := q.db.Query(ctx, listChatMessagesPage,
		arg.ChatSessionID,
		arg.Limit,
		arg.BeforeCreatedAt,
		arg.BeforeID,
	)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	items := []ChatMessage{}
	for rows.Next() {
		var i ChatMessage
		if err := rows.Scan(
			&i.ID,
			&i.ChatSessionID,
			&i.Role,
			&i.Content,
			&i.TaskID,
			&i.CreatedAt,
			&i.FailureReason,
			&i.ElapsedMs,
		); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const listChatSessionsByCreator = `-- name: ListChatSessionsByCreator :many
SELECT cs.id, cs.workspace_id, cs.agent_id, cs.creator_id, cs.title, cs.session_id, cs.work_dir, cs.status, cs.created_at, cs.updated_at, cs.runtime_id, cs.last_read_at, cs.is_agent_intro, cs.pinned_at,
       (SELECT count(*) FROM chat_message m
          WHERE m.chat_session_id = cs.id
            AND m.role = 'assistant'
            AND m.created_at > cs.last_read_at)::int AS unread_count,
       COALESCE(lm.content, '') AS last_message_content,
       COALESCE(lm.role, '') AS last_message_role,
       lm.created_at AS last_message_at,
       lm.failure_reason AS last_message_failure_reason
FROM chat_session cs
LEFT JOIN LATERAL (
  SELECT content, role, created_at, failure_reason
    FROM chat_message m
   WHERE m.chat_session_id = cs.id
   ORDER BY m.created_at DESC
   LIMIT 1
) lm ON true
WHERE cs.workspace_id = $1 AND cs.creator_id = $2 AND cs.status = 'active'
ORDER BY (cs.pinned_at IS NOT NULL) DESC, cs.pinned_at DESC, COALESCE(lm.created_at, cs.updated_at) DESC
`

type ListChatSessionsByCreatorParams struct {
	WorkspaceID pgtype.UUID `json:"workspace_id"`
	CreatorID   pgtype.UUID `json:"creator_id"`
}

type ListChatSessionsByCreatorRow struct {
	ID                       pgtype.UUID        `json:"id"`
	WorkspaceID              pgtype.UUID        `json:"workspace_id"`
	AgentID                  pgtype.UUID        `json:"agent_id"`
	CreatorID                pgtype.UUID        `json:"creator_id"`
	Title                    string             `json:"title"`
	SessionID                pgtype.Text        `json:"session_id"`
	WorkDir                  pgtype.Text        `json:"work_dir"`
	Status                   string             `json:"status"`
	CreatedAt                pgtype.Timestamptz `json:"created_at"`
	UpdatedAt                pgtype.Timestamptz `json:"updated_at"`
	RuntimeID                pgtype.UUID        `json:"runtime_id"`
	LastReadAt               pgtype.Timestamptz `json:"last_read_at"`
	IsAgentIntro             bool               `json:"is_agent_intro"`
	PinnedAt                 pgtype.Timestamptz `json:"pinned_at"`
	UnreadCount              int32              `json:"unread_count"`
	LastMessageContent       string             `json:"last_message_content"`
	LastMessageRole          string             `json:"last_message_role"`
	LastMessageAt            pgtype.Timestamptz `json:"last_message_at"`
	LastMessageFailureReason pgtype.Text        `json:"last_message_failure_reason"`
}

// IM-style list: each active session with its unread *count* (assistant
// messages after the read cursor), a preview of the latest message, and
// ordered by most-recent activity so a new reply bumps a session to the top.
func (q *Queries) ListChatSessionsByCreator(ctx context.Context, arg ListChatSessionsByCreatorParams) ([]ListChatSessionsByCreatorRow, error) {
	rows, err := q.db.Query(ctx, listChatSessionsByCreator, arg.WorkspaceID, arg.CreatorID)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	items := []ListChatSessionsByCreatorRow{}
	for rows.Next() {
		var i ListChatSessionsByCreatorRow
		if err := rows.Scan(
			&i.ID,
			&i.WorkspaceID,
			&i.AgentID,
			&i.CreatorID,
			&i.Title,
			&i.SessionID,
			&i.WorkDir,
			&i.Status,
			&i.CreatedAt,
			&i.UpdatedAt,
			&i.RuntimeID,
			&i.LastReadAt,
			&i.IsAgentIntro,
			&i.PinnedAt,
			&i.UnreadCount,
			&i.LastMessageContent,
			&i.LastMessageRole,
			&i.LastMessageAt,
			&i.LastMessageFailureReason,
		); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const listPendingChatTasksByCreator = `-- name: ListPendingChatTasksByCreator :many
SELECT atq.id AS task_id, atq.status, atq.chat_session_id, cs.agent_id
FROM agent_task_queue atq
JOIN chat_session cs ON cs.id = atq.chat_session_id
WHERE atq.chat_session_id IS NOT NULL
  AND atq.status IN ('queued', 'dispatched', 'running', 'waiting_local_directory')
  AND cs.workspace_id = $1
  AND cs.creator_id = $2
ORDER BY atq.created_at DESC
`

type ListPendingChatTasksByCreatorParams struct {
	WorkspaceID pgtype.UUID `json:"workspace_id"`
	CreatorID   pgtype.UUID `json:"creator_id"`
}

type ListPendingChatTasksByCreatorRow struct {
	TaskID        pgtype.UUID `json:"task_id"`
	Status        string      `json:"status"`
	ChatSessionID pgtype.UUID `json:"chat_session_id"`
	AgentID       pgtype.UUID `json:"agent_id"`
}

// Aggregate view of all in-flight chat tasks owned by a given creator in a
// workspace. Drives the FAB's "running" indicator when the chat window is
// closed and no single session's query is active.
//
// Returns cs.agent_id so the handler can filter tasks belonging to private
// agents the caller has lost access to using the already-loaded `allowed`
// set — no second ListAllChatSessionsByCreator scan on the hot path.
//
// atq.chat_session_id IS NOT NULL is redundant given the JOIN, but stated
// explicitly so the planner can prove the query predicate is a subset of the
// idx_agent_task_queue_chat_pending_v2 partial-index predicate and use it.
func (q *Queries) ListPendingChatTasksByCreator(ctx context.Context, arg ListPendingChatTasksByCreatorParams) ([]ListPendingChatTasksByCreatorRow, error) {
	rows, err := q.db.Query(ctx, listPendingChatTasksByCreator, arg.WorkspaceID, arg.CreatorID)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	items := []ListPendingChatTasksByCreatorRow{}
	for rows.Next() {
		var i ListPendingChatTasksByCreatorRow
		if err := rows.Scan(
			&i.TaskID,
			&i.Status,
			&i.ChatSessionID,
			&i.AgentID,
		); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const lockChatSessionForDelete = `-- name: LockChatSessionForDelete :one
SELECT id FROM chat_session
WHERE id = $1
FOR UPDATE
`

// Acquires an exclusive (FOR UPDATE) row lock on chat_session(id). Used by
// the delete path so that a concurrent SendChatMessage cannot enqueue a new
// agent_task_queue row referencing this session between our cancel and
// delete steps. The FK from agent_task_queue.chat_session_id takes a
// KEY SHARE lock on the parent row during INSERT validation, which
// conflicts with FOR UPDATE — concurrent inserts block here and then fail
// their FK check after we commit the delete.
func (q *Queries) LockChatSessionForDelete(ctx context.Context, id pgtype.UUID) (pgtype.UUID, error) {
	row := q.db.QueryRow(ctx, lockChatSessionForDelete, id)
	err := row.Scan(&id)
	return id, err
}

const markChatSessionRead = `-- name: MarkChatSessionRead :exec
UPDATE chat_session SET last_read_at = now()
WHERE id = $1
`

// Advances the read cursor to now, dropping the session's unread_count to 0.
func (q *Queries) MarkChatSessionRead(ctx context.Context, id pgtype.UUID) error {
	_, err := q.db.Exec(ctx, markChatSessionRead, id)
	return err
}

const setChatSessionArchived = `-- name: SetChatSessionArchived :one
UPDATE chat_session
SET status = CASE WHEN $2::bool THEN 'archived' ELSE 'active' END,
    updated_at = now()
WHERE id = $1
RETURNING id, workspace_id, agent_id, creator_id, title, session_id, work_dir, status, created_at, updated_at, runtime_id, last_read_at, is_agent_intro, pinned_at
`

type SetChatSessionArchivedParams struct {
	ID       pgtype.UUID `json:"id"`
	Archived bool        `json:"archived"`
}

// Archive/unarchive a chat session by flipping status between 'active' and
// 'archived'. Bumps updated_at so the row re-sorts on the receiving list. The
// send-message path refuses archived sessions (see SendChatMessage), so the
// conversation is effectively read-only until it is unarchived.
func (q *Queries) SetChatSessionArchived(ctx context.Context, arg SetChatSessionArchivedParams) (ChatSession, error) {
	row := q.db.QueryRow(ctx, setChatSessionArchived, arg.ID, arg.Archived)
	var i ChatSession
	err := row.Scan(
		&i.ID,
		&i.WorkspaceID,
		&i.AgentID,
		&i.CreatorID,
		&i.Title,
		&i.SessionID,
		&i.WorkDir,
		&i.Status,
		&i.CreatedAt,
		&i.UpdatedAt,
		&i.RuntimeID,
		&i.LastReadAt,
		&i.IsAgentIntro,
		&i.PinnedAt,
	)
	return i, err
}

const setChatSessionPinned = `-- name: SetChatSessionPinned :one
UPDATE chat_session
SET pinned_at = CASE WHEN $2::bool THEN COALESCE(pinned_at, now()) ELSE NULL END
WHERE id = $1
RETURNING id, workspace_id, agent_id, creator_id, title, session_id, work_dir, status, created_at, updated_at, runtime_id, last_read_at, is_agent_intro, pinned_at
`

type SetChatSessionPinnedParams struct {
	ID     pgtype.UUID `json:"id"`
	Pinned bool        `json:"pinned"`
}

// Pin/unpin a chat. Deliberately does NOT touch updated_at: pinning is a
// list-ordering preference, not activity, so it must not bump the session's
// last-activity sort key (which would make an unpinned chat jump the list).
// pinned = true stamps pinned_at only when it was NULL, so re-pinning keeps
// the original pin order; pinned = false clears it.
func (q *Queries) SetChatSessionPinned(ctx context.Context, arg SetChatSessionPinnedParams) (ChatSession, error) {
	row := q.db.QueryRow(ctx, setChatSessionPinned, arg.ID, arg.Pinned)
	var i ChatSession
	err := row.Scan(
		&i.ID,
		&i.WorkspaceID,
		&i.AgentID,
		&i.CreatorID,
		&i.Title,
		&i.SessionID,
		&i.WorkDir,
		&i.Status,
		&i.CreatedAt,
		&i.UpdatedAt,
		&i.RuntimeID,
		&i.LastReadAt,
		&i.IsAgentIntro,
		&i.PinnedAt,
	)
	return i, err
}

const touchChatSession = `-- name: TouchChatSession :exec
UPDATE chat_session SET updated_at = now()
WHERE id = $1
`

func (q *Queries) TouchChatSession(ctx context.Context, id pgtype.UUID) error {
	_, err := q.db.Exec(ctx, touchChatSession, id)
	return err
}

const updateChatSessionSession = `-- name: UpdateChatSessionSession :exec
UPDATE chat_session
SET session_id = COALESCE($1, session_id),
    work_dir = COALESCE($2, work_dir),
    runtime_id = COALESCE($3, runtime_id),
    updated_at = now()
WHERE id = $4
`

type UpdateChatSessionSessionParams struct {
	SessionID pgtype.Text `json:"session_id"`
	WorkDir   pgtype.Text `json:"work_dir"`
	RuntimeID pgtype.UUID `json:"runtime_id"`
	ID        pgtype.UUID `json:"id"`
}

// Updates the resume pointer for a chat session. Empty/NULL inputs are
// ignored via COALESCE so a task that completes without a session_id (e.g.
// the agent crashed before establishing one) cannot wipe out a previously
// recorded resume pointer. This makes the chat memory robust against
// intermittent agent failures.
func (q *Queries) UpdateChatSessionSession(ctx context.Context, arg UpdateChatSessionSessionParams) error {
	_, err := q.db.Exec(ctx, updateChatSessionSession,
		arg.SessionID,
		arg.WorkDir,
		arg.RuntimeID,
		arg.ID,
	)
	return err
}

const updateChatSessionTitle = `-- name: UpdateChatSessionTitle :one
UPDATE chat_session SET title = $2, updated_at = now()
WHERE id = $1
RETURNING id, workspace_id, agent_id, creator_id, title, session_id, work_dir, status, created_at, updated_at, runtime_id, last_read_at, is_agent_intro, pinned_at
`

type UpdateChatSessionTitleParams struct {
	ID    pgtype.UUID `json:"id"`
	Title string      `json:"title"`
}

func (q *Queries) UpdateChatSessionTitle(ctx context.Context, arg UpdateChatSessionTitleParams) (ChatSession, error) {
	row := q.db.QueryRow(ctx, updateChatSessionTitle, arg.ID, arg.Title)
	var i ChatSession
	err := row.Scan(
		&i.ID,
		&i.WorkspaceID,
		&i.AgentID,
		&i.CreatorID,
		&i.Title,
		&i.SessionID,
		&i.WorkDir,
		&i.Status,
		&i.CreatedAt,
		&i.UpdatedAt,
		&i.RuntimeID,
		&i.LastReadAt,
		&i.IsAgentIntro,
		&i.PinnedAt,
	)
	return i, err
}