package models

import (
	"context"
	"time"
)

type Goal struct {
	ID              string    `json:"id" db:"goal_id"`
	UserID          string    `json:"-" db:"user_id"`
	GroupID         string    `json:"groupId" db:"group_id"`
	ItemID          *string   `json:"itemId" db:"item_id"`
	StartTime       time.Time `json:"startTime" db:"start_time"`
	EndTime         time.Time `json:"endTime" db:"end_time"`
	Amount          int       `json:"amount" db:"amount"`
	Unweighted      bool      `json:"unweighted" db:"unweighted"`
	Name            string    `json:"name" db:"name"`
	Description     string    `json:"description" db:"description"`
	CompositionMode string    `json:"compositionMode" db:"composition_mode"`
}

func (goal *Goal) Update(update GoalUpdate) {
	if update.Amount != nil {
		goal.Amount = *update.Amount
	}
	if update.StartTime != nil {
		goal.StartTime = *update.StartTime
	}
	if update.EndTime != nil {
		goal.EndTime = *update.EndTime
	}
	if update.Name != nil {
		goal.Name = *update.Name
	}
	if update.Description != nil {
		goal.Description = *update.Description
	}
	if update.Unweighted != nil {
		goal.Unweighted = *update.Unweighted
	}
	if update.CompositionMode != nil {
		goal.CompositionMode = *update.CompositionMode
	}
	if update.ItemID != nil {
		goal.ItemID = update.ItemID
	}
	if update.ClearItemID {
		goal.ItemID = nil
	}
}

type GoalUpdate struct {
	StartTime       *time.Time `json:"startTime"`
	EndTime         *time.Time `json:"endTime"`
	Amount          *int       `json:"amount"`
	Name            *string    `json:"name"`
	Description     *string    `json:"description"`
	ItemID          *string    `json:"itemId"`
	Unweighted      *bool      `json:"unweighted"`
	CompositionMode *string    `json:"compositionMode"`
	ClearItemID     bool       `json:"clearItemID"`
}

type GoalResult struct {
	Goal
	Group           *Group            `json:"group"`
	Items           []*GoalResultItem `json:"items"`
	Logs            []*LogResult      `json:"logs"`
	CompletedAmount int               `json:"completedAmount"`
}

type GoalResultItem struct {
	Item
	CompletedAmount int `json:"completedAmount"`
}

type GoalFilter struct {
	UserID       string
	GroupIDs     []string
	IncludesTime *time.Time
	MinTime      *time.Time
	MaxTime      *time.Time
	IDs          []string
}

type GoalRepository interface {
	Find(ctx context.Context, id string) (*Goal, error)
	List(ctx context.Context, filter GoalFilter) ([]*Goal, error)
	Insert(ctx context.Context, goal Goal) error
	Update(ctx context.Context, goal Goal) error
	Delete(ctx context.Context, goal Goal) error
}