package models

import (
	"context"
	"time"
)

type Task struct {
	ID          string     `json:"id" db:"task_id"`
	UserID      string     `json:"-" db:"user_id"`
	ItemID      string     `json:"itemId" db:"item_id"`
	ProjectID   string     `json:"projectId" db:"project_id"`
	ItemAmount  int        `json:"itemAmount" db:"item_amount"`
	Name        string     `json:"name" db:"name"`
	Description string     `json:"description" db:"description"`
	Icon        string     `json:"icon" db:"icon"`
	Active      bool       `json:"active" db:"active"`
	CreatedTime time.Time  `json:"createdTime" db:"created_time"`
	EndTime     *time.Time `json:"endTime" db:"end_time"`
	StatusTag   *string    `json:"statusTag" db:"status_tag"`
}

func (task *Task) Update(update TaskUpdate) {
	if update.ItemID != nil {
		task.ItemID = *update.ItemID
	}
	if update.ItemAmount != nil {
		task.ItemAmount = *update.ItemAmount
	}
	if update.Name != nil {
		task.Name = *update.Name
	}
	if update.Description != nil {
		task.Description = *update.Description
	}
	if update.Active != nil {
		task.Active = *update.Active
	}
	if update.EndTime != nil {
		endTimeCopy := update.EndTime.UTC()
		task.EndTime = &endTimeCopy
	}
	if update.ClearEndTime {
		task.EndTime = nil
	}
	if update.StatusTag != nil {
		task.StatusTag = update.StatusTag
	}
	if update.ClearStatusTag {
		task.StatusTag = nil
	}
	if update.ProjectID != nil {
		task.ProjectID = *update.ProjectID
	}
}

type TaskUpdate struct {
	ItemID         *string    `json:"itemId"`
	ItemAmount     *int       `json:"itemAmount"`
	Name           *string    `json:"name"`
	Description    *string    `json:"description"`
	Active         *bool      `json:"active"`
	EndTime        *time.Time `json:"endTime"`
	ClearEndTime   bool       `json:"clearEndTime"`
	StatusTag      *string    `json:"statusTag"`
	ClearStatusTag bool       `json:"clearStatusTag"`
	ProjectID      *string    `json:"projectId"`
}

type TaskResult struct {
	Task
	Item            *Item    `json:"item"`
	Logs            []*Log   `json:"logs"`
	CompletedAmount int      `json:"completedAmount"`
	Project         *Project `json:"project,omitempty"`
}

type TaskFilter struct {
	UserID     string
	Active     *bool
	Expiring   *bool
	IDs        []string
	ItemIDs    []string
	ProjectIDs []string
}

type TaskRepository interface {
	Find(ctx context.Context, id string) (*Task, error)
	List(ctx context.Context, filter TaskFilter) ([]*Task, error)
	Insert(ctx context.Context, task Task) error
	Update(ctx context.Context, task Task) error
	Delete(ctx context.Context, task Task) error
}