package model

import (
	"encoding/json"
	"github.com/loveuer/nfflow/internal/sqlType"
	"github.com/samber/lo"
	"github.com/sirupsen/logrus"
	"gorm.io/gorm"
)

type InputType int64

const (
	InputTypeES InputType = iota + 1
	InputTypePG
	InputTypeMQ
)

type OutputType int64

const (
	OutputTypeES OutputType = iota + 1
	OutputTypeFile
	OutputTypeMQ
)

type PipeType int64

func (p PipeType) Value() int64 { return int64(p) }

func (p PipeType) Code() string {
	switch p {
	case PipeTypeLoadashMap:
		return "pipe_map"
	default:
		return "unknown"
	}
}

func (p PipeType) Label() string {
	switch p {
	case PipeTypeLoadashMap:
		return "Map"
	default:
		return "未知"
	}
}

func (p PipeType) MarshalJSON() ([]byte, error) {
	return json.Marshal(map[string]any{"value": p.Value(), "code": p.Code(), "label": p.Label()})
}

func (p PipeType) All() []Enum {
	return []Enum{PipeTypeLoadashMap}
}

const (
	PipeTypeLoadashMap PipeType = iota + 1
)

var _ Enum = PipeType(0)

type TaskStatus int64

func (t TaskStatus) MarshalJSON() ([]byte, error) {
	return json.Marshal(map[string]any{
		"value": t.Value(),
		"code":  t.Code(),
		"label": t.Label(),
	})
}

func (t TaskStatus) All() []Enum {
	return []Enum{
		TaskStatusNotReady,
		TaskStatusReady,
		TaskStatusRunning,
		TaskStatusSucceed,
		TaskStatusFailed,
	}
}

var _ Enum = TaskStatus(0)

const (
	TaskStatusNotReady TaskStatus = iota
	TaskStatusReady
	TaskStatusRunning
	TaskStatusSucceed
	TaskStatusFailed
)

func (t TaskStatus) Value() int64 {
	return int64(t)
}

func (t TaskStatus) Code() string {
	switch t {
	case TaskStatusNotReady:
		return "not_ready"
	case TaskStatusReady:
		return "ready"
	case TaskStatusRunning:
		return "running"
	case TaskStatusSucceed:
		return "succeed"
	case TaskStatusFailed:
		return "failed"
	default:
		return "unknown"
	}
}

func (t TaskStatus) Label() string {
	switch t {
	case TaskStatusNotReady:
		return "未完善"
	case TaskStatusReady:
		return "等待执行"
	case TaskStatusRunning:
		return "执行中"
	case TaskStatusSucceed:
		return "执行成功"
	case TaskStatusFailed:
		return "执行失败"
	default:
		return "未知"
	}
}

type TaskRunType int64

const (
	TaskRunTypeOnce TaskRunType = iota
	TaskRunTypeTiming
	TaskRunTypeCron
)

func (t TaskRunType) Value() int64 { return int64(t) }

func (t TaskRunType) Code() string {
	switch t {
	case TaskRunTypeOnce:
		return "once"
	case TaskRunTypeTiming:
		return "timing"
	case TaskRunTypeCron:
		return "cron"
	default:
		return "unknown"
	}
}

func (t TaskRunType) Label() string {
	switch t {
	case TaskRunTypeOnce:
		return "手动执行"
	case TaskRunTypeTiming:
		return "定时执行"
	case TaskRunTypeCron:
		return "周期执行"
	default:
		return "未知"
	}
}

func (t TaskRunType) MarshalJSON() ([]byte, error) {
	return json.Marshal(map[string]any{"code": t.Code(), "value": t.Value(), "label": t.Label()})
}

func (t TaskRunType) All() []Enum {
	return []Enum{TaskRunTypeOnce, TaskRunTypeTiming, TaskRunTypeCron}
}

var _ Enum = TaskRunType(0)

type Task struct {
	Id        uint64 `json:"id" gorm:"primaryKey;column:id"`
	CreatedAt int64  `json:"created_at" gorm:"column:created_at;autoCreateTime:milli"`
	UpdatedAt int64  `json:"updated_at" gorm:"column:updated_at;autoUpdateTime:milli"`
	DeletedAt int64  `json:"deleted_at" gorm:"index;column:deleted_at;default:0"`

	TaskName    string      `json:"task_name" gorm:"column:task_name;type:varchar(256)"`
	TaskRunType TaskRunType `json:"task_run_type" gorm:"column:task_run_type;type:varchar(16);default:0"` // cron: C-"cron syntax", "once", timestamp: T-1234567890123 毫秒时间戳
	TaskRunAt   int64       `json:"task_run_at" gorm:"column:task_run_at"`
	TaskCron    string      `json:"task_cron" gorm:"column:task_cron;type:varchar(32)"`
	TaskTimeout int         `json:"task_timeout" gorm:"column:task_timeout"`
	TaskStatus  TaskStatus  `json:"task_status" gorm:"column:task_status"`
	TaskLog     string      `json:"task_log" gorm:"task_log"`
}

type TaskInput struct {
	Id     uint64        `json:"id" gorm:"primaryKey;column:id"`
	TaskId uint64        `json:"task_id" gorm:"column:task_id"`
	Type   InputType     `json:"type" gorm:"column:type"`
	Config sqlType.JSONB `json:"config" gorm:"config"`
}

func (t *Task) GetInput(tx *gorm.DB) (*TaskInput, error) {
	var (
		err error
		ti  = new(TaskInput)
	)

	if err = tx.Model(&TaskInput{}).
		Where("task_id", t.Id).
		Take(ti).
		Error; err != nil {
		return nil, err
	}

	return ti, nil
}

type TaskOutput struct {
	Id     uint64        `json:"id" gorm:"primaryKey;column:id"`
	TaskId uint64        `json:"task_id" gorm:"column:task_id"`
	Type   OutputType    `json:"type" gorm:"column:type"`
	Config sqlType.JSONB `json:"config" gorm:"config"`
}

func (t *Task) GetOutputs(tx *gorm.DB) ([]*TaskOutput, error) {
	var (
		err     error
		outputs = make([]*TaskOutput, 0)
	)

	if err = tx.Model(&TaskOutput{}).
		Where("task_id", t.Id).
		Find(&outputs).
		Error; err != nil {
		return nil, err
	}

	return outputs, nil
}

type TaskPipe struct {
	Id     uint64        `json:"id" gorm:"primaryKey;column:id"`
	TaskId uint64        `json:"task_id" gorm:"column:task_id"`
	Pid    uint64        `json:"pid" gorm:"column:pid"`
	Type   PipeType      `json:"type" gorm:"column:type"`
	Config sqlType.JSONB `json:"config" gorm:"config"`
	Next   []*TaskPipe   `json:"next" gorm:"-"`
}

func (t *Task) GetPipes(tx *gorm.DB) ([]*TaskPipe, error) {
	var (
		err  error
		list = make([]*TaskPipe, 0)
	)

	if err = tx.Model(&TaskPipe{}).
		Where("task_id", t.Id).
		Find(&list).
		Error; err != nil {
		return nil, err
	}

	m := lo.SliceToMap(list, func(item *TaskPipe) (uint64, *TaskPipe) {
		item.Next = make([]*TaskPipe, 0)
		return item.Id, item
	})

	m[0] = &TaskPipe{Next: make([]*TaskPipe, 0)}

	for idx := range list {
		x := list[idx]
		if _, exist := m[x.Pid]; !exist {
			logrus.Warnf("GetPipes: pipe=[task_id=%d id=%d pid=%d type=%s] pid not found", x.TaskId, x.Id, x.Pid, x.Type.Code())
			continue
		}

		m[x.Pid].Next = append(m[x.Pid].Next, x)
	}

	return m[0].Next, nil
}