// Code generated by sqlc. DO NOT EDIT.
// versions:
//   sqlc v1.26.0
// source: query_task_scheduler.sql

package sqlc

import (
	"context"
	"database/sql"
	"strings"

	"projects.blender.org/studio/flamenco/pkg/api"
)

const assignTaskToWorker = `-- name: AssignTaskToWorker :exec
UPDATE tasks
SET worker_id=?1, last_touched_at=?2, updated_at=?2
WHERE tasks.id=?3
`

type AssignTaskToWorkerParams struct {
	WorkerID sql.NullInt64
	Now      sql.NullTime
	TaskID   int64
}

func (q *Queries) AssignTaskToWorker(ctx context.Context, arg AssignTaskToWorkerParams) error {
	_, err := q.db.ExecContext(ctx, assignTaskToWorker, arg.WorkerID, arg.Now, arg.TaskID)
	return err
}

const fetchAssignedAndRunnableTaskOfWorker = `-- name: FetchAssignedAndRunnableTaskOfWorker :one
SELECT tasks.id, tasks.created_at, tasks.updated_at, tasks.uuid, tasks.name, tasks.type, tasks.job_id, tasks.index_in_job, tasks.priority, tasks.status, tasks.worker_id, tasks.last_touched_at, tasks.commands, tasks.activity, jobs.uuid as jobuuid, jobs.priority as job_priority, jobs.job_type as job_type
FROM tasks
  INNER JOIN jobs ON tasks.job_id = jobs.id
WHERE tasks.status=?1
  AND tasks.worker_id=?2
  AND jobs.status IN (/*SLICE:active_job_statuses*/?)
LIMIT 1
`

type FetchAssignedAndRunnableTaskOfWorkerParams struct {
	ActiveTaskStatus  api.TaskStatus
	WorkerID          sql.NullInt64
	ActiveJobStatuses []api.JobStatus
}

type FetchAssignedAndRunnableTaskOfWorkerRow struct {
	Task        Task
	JobUUID     string
	JobPriority int64
	JobType     string
}

// Fetch a task that's assigned to this worker, and is in a runnable state.
func (q *Queries) FetchAssignedAndRunnableTaskOfWorker(ctx context.Context, arg FetchAssignedAndRunnableTaskOfWorkerParams) (FetchAssignedAndRunnableTaskOfWorkerRow, error) {
	query := fetchAssignedAndRunnableTaskOfWorker
	var queryParams []interface{}
	queryParams = append(queryParams, arg.ActiveTaskStatus)
	queryParams = append(queryParams, arg.WorkerID)
	if len(arg.ActiveJobStatuses) > 0 {
		for _, v := range arg.ActiveJobStatuses {
			queryParams = append(queryParams, v)
		}
		query = strings.Replace(query, "/*SLICE:active_job_statuses*/?", strings.Repeat(",?", len(arg.ActiveJobStatuses))[1:], 1)
	} else {
		query = strings.Replace(query, "/*SLICE:active_job_statuses*/?", "NULL", 1)
	}
	row := q.db.QueryRowContext(ctx, query, queryParams...)
	var i FetchAssignedAndRunnableTaskOfWorkerRow
	err := row.Scan(
		&i.Task.ID,
		&i.Task.CreatedAt,
		&i.Task.UpdatedAt,
		&i.Task.UUID,
		&i.Task.Name,
		&i.Task.Type,
		&i.Task.JobID,
		&i.Task.IndexInJob,
		&i.Task.Priority,
		&i.Task.Status,
		&i.Task.WorkerID,
		&i.Task.LastTouchedAt,
		&i.Task.Commands,
		&i.Task.Activity,
		&i.JobUUID,
		&i.JobPriority,
		&i.JobType,
	)
	return i, err
}

const fetchWorkerTask = `-- name: FetchWorkerTask :one
SELECT
  tasks.id, tasks.created_at, tasks.updated_at, tasks.uuid, tasks.name, tasks.type, tasks.job_id, tasks.index_in_job, tasks.priority, tasks.status, tasks.worker_id, tasks.last_touched_at, tasks.commands, tasks.activity,
  jobs.uuid as jobuuid,
  CAST(tasks.status = ?1 AND jobs.status = ?2 AS BOOLEAN) as is_active
FROM tasks
  INNER JOIN jobs ON tasks.job_id = jobs.id
WHERE
  tasks.worker_id = ?3
ORDER BY
  is_active DESC,
  tasks.updated_at DESC
LIMIT 1
`

type FetchWorkerTaskParams struct {
	TaskStatusActive api.TaskStatus
	JobStatusActive  api.JobStatus
	WorkerID         sql.NullInt64
}

type FetchWorkerTaskRow struct {
	Task     Task
	JobUUID  string
	IsActive bool
}

// Find the currently-active task assigned to a Worker. If not found, find the last task this Worker worked on.
func (q *Queries) FetchWorkerTask(ctx context.Context, arg FetchWorkerTaskParams) (FetchWorkerTaskRow, error) {
	row := q.db.QueryRowContext(ctx, fetchWorkerTask, arg.TaskStatusActive, arg.JobStatusActive, arg.WorkerID)
	var i FetchWorkerTaskRow
	err := row.Scan(
		&i.Task.ID,
		&i.Task.CreatedAt,
		&i.Task.UpdatedAt,
		&i.Task.UUID,
		&i.Task.Name,
		&i.Task.Type,
		&i.Task.JobID,
		&i.Task.IndexInJob,
		&i.Task.Priority,
		&i.Task.Status,
		&i.Task.WorkerID,
		&i.Task.LastTouchedAt,
		&i.Task.Commands,
		&i.Task.Activity,
		&i.JobUUID,
		&i.IsActive,
	)
	return i, err
}

const findRunnableTask = `-- name: FindRunnableTask :one
SELECT tasks.id, tasks.created_at, tasks.updated_at, tasks.uuid, tasks.name, tasks.type, tasks.job_id, tasks.index_in_job, tasks.priority, tasks.status, tasks.worker_id, tasks.last_touched_at, tasks.commands, tasks.activity, jobs.uuid as jobuuid, jobs.priority as job_priority, jobs.job_type as job_type
FROM tasks
  INNER JOIN jobs ON tasks.job_id = jobs.id
  LEFT JOIN task_failures TF ON tasks.id = TF.task_id AND TF.worker_id=?1
WHERE TF.worker_id IS NULL -- Not failed by this worker before.
  AND tasks.id NOT IN (
    -- Find all tasks IDs that have incomplete dependencies. These are not runnable.
    SELECT tasks_incomplete.id
    FROM tasks AS tasks_incomplete
      INNER JOIN task_dependencies td ON tasks_incomplete.id = td.task_id
      INNER JOIN tasks dep ON dep.id = td.dependency_id
    WHERE dep.status != ?2
  )
  AND tasks.type NOT IN (
    SELECT task_type
    FROM job_blocks
    WHERE job_blocks.worker_id = ?1
      AND job_blocks.job_id = jobs.id
  )
  AND (
    jobs.worker_tag_id IS NULL
    OR jobs.worker_tag_id IN (/*SLICE:worker_tags*/?))
  AND tasks.status IN (/*SLICE:schedulable_task_statuses*/?)
  AND jobs.status IN (/*SLICE:schedulable_job_statuses*/?)
  AND tasks.type IN (/*SLICE:supported_task_types*/?)
ORDER BY jobs.priority DESC, tasks.priority DESC
`

type FindRunnableTaskParams struct {
	WorkerID                int64
	TaskStatusCompleted     api.TaskStatus
	WorkerTags              []sql.NullInt64
	SchedulableTaskStatuses []api.TaskStatus
	SchedulableJobStatuses  []api.JobStatus
	SupportedTaskTypes      []string
}

type FindRunnableTaskRow struct {
	Task        Task
	JobUUID     string
	JobPriority int64
	JobType     string
}

// Find a task to be run by a worker. This is the core of the task scheduler.
//
// Note that this query doesn't check for the assigned worker. Tasks that have a
// 'schedulable' status might have been assigned to a worker, representing the
// last worker to touch it -- it's not meant to indicate "ownership" of the
// task.
//
// The order in the WHERE clause is important, slices should come last. See
// https://github.com/sqlc-dev/sqlc/issues/2452 for more info.
func (q *Queries) FindRunnableTask(ctx context.Context, arg FindRunnableTaskParams) (FindRunnableTaskRow, error) {
	query := findRunnableTask
	var queryParams []interface{}
	queryParams = append(queryParams, arg.WorkerID)
	queryParams = append(queryParams, arg.TaskStatusCompleted)
	if len(arg.WorkerTags) > 0 {
		for _, v := range arg.WorkerTags {
			queryParams = append(queryParams, v)
		}
		query = strings.Replace(query, "/*SLICE:worker_tags*/?", strings.Repeat(",?", len(arg.WorkerTags))[1:], 1)
	} else {
		query = strings.Replace(query, "/*SLICE:worker_tags*/?", "NULL", 1)
	}
	if len(arg.SchedulableTaskStatuses) > 0 {
		for _, v := range arg.SchedulableTaskStatuses {
			queryParams = append(queryParams, v)
		}
		query = strings.Replace(query, "/*SLICE:schedulable_task_statuses*/?", strings.Repeat(",?", len(arg.SchedulableTaskStatuses))[1:], 1)
	} else {
		query = strings.Replace(query, "/*SLICE:schedulable_task_statuses*/?", "NULL", 1)
	}
	if len(arg.SchedulableJobStatuses) > 0 {
		for _, v := range arg.SchedulableJobStatuses {
			queryParams = append(queryParams, v)
		}
		query = strings.Replace(query, "/*SLICE:schedulable_job_statuses*/?", strings.Repeat(",?", len(arg.SchedulableJobStatuses))[1:], 1)
	} else {
		query = strings.Replace(query, "/*SLICE:schedulable_job_statuses*/?", "NULL", 1)
	}
	if len(arg.SupportedTaskTypes) > 0 {
		for _, v := range arg.SupportedTaskTypes {
			queryParams = append(queryParams, v)
		}
		query = strings.Replace(query, "/*SLICE:supported_task_types*/?", strings.Repeat(",?", len(arg.SupportedTaskTypes))[1:], 1)
	} else {
		query = strings.Replace(query, "/*SLICE:supported_task_types*/?", "NULL", 1)
	}
	row := q.db.QueryRowContext(ctx, query, queryParams...)
	var i FindRunnableTaskRow
	err := row.Scan(
		&i.Task.ID,
		&i.Task.CreatedAt,
		&i.Task.UpdatedAt,
		&i.Task.UUID,
		&i.Task.Name,
		&i.Task.Type,
		&i.Task.JobID,
		&i.Task.IndexInJob,
		&i.Task.Priority,
		&i.Task.Status,
		&i.Task.WorkerID,
		&i.Task.LastTouchedAt,
		&i.Task.Commands,
		&i.Task.Activity,
		&i.JobUUID,
		&i.JobPriority,
		&i.JobType,
	)
	return i, err
}