package common

import (
	"database/sql"
	"time"

	"github.com/Azareal/Gosora/query_gen"
)

var ModLogs LogStore
var AdminLogs LogStore

type LogItem struct {
	Action      string
	ElementID   int
	ElementType string
	IP   string
	ActorID     int
	DoneAt      string
}

type LogStore interface {
	Create(action string, elementID int, elementType string, ip string, actorID int) (err error)
	Count() int
	GetOffset(offset int, perPage int) (logs []LogItem, err error)
}

type SQLModLogStore struct {
	create    *sql.Stmt
	count     *sql.Stmt
	getOffset *sql.Stmt
}

func NewModLogStore(acc *qgen.Accumulator) (*SQLModLogStore, error) {
	return &SQLModLogStore{
		create:    acc.Insert("moderation_logs").Columns("action, elementID, elementType, ipaddress, actorID, doneAt").Fields("?,?,?,?,?,UTC_TIMESTAMP()").Prepare(),
		count:     acc.Count("moderation_logs").Prepare(),
		getOffset: acc.Select("moderation_logs").Columns("action, elementID, elementType, ipaddress, actorID, doneAt").Orderby("doneAt DESC").Limit("?,?").Prepare(),
	}, acc.FirstError()
}

// TODO: Make a store for this?
func (s *SQLModLogStore) Create(action string, elementID int, elementType string, ip string, actorID int) (err error) {
	_, err = s.create.Exec(action, elementID, elementType, ip, actorID)
	return err
}

func (s *SQLModLogStore) Count() (count int) {
	err := s.count.QueryRow().Scan(&count)
	if err != nil {
		LogError(err)
	}
	return count
}

func buildLogList(rows *sql.Rows) (logs []LogItem, err error) {
	for rows.Next() {
		var l LogItem
		var doneAt time.Time
		err := rows.Scan(&l.Action, &l.ElementID, &l.ElementType, &l.IP, &l.ActorID, &doneAt)
		if err != nil {
			return logs, err
		}
		l.DoneAt = doneAt.Format("2006-01-02 15:04:05")
		logs = append(logs, l)
	}
	return logs, rows.Err()
}

func (s *SQLModLogStore) GetOffset(offset int, perPage int) (logs []LogItem, err error) {
	rows, err := s.getOffset.Query(offset, perPage)
	if err != nil {
		return logs, err
	}
	defer rows.Close()
	return buildLogList(rows)
}

type SQLAdminLogStore struct {
	create    *sql.Stmt
	count     *sql.Stmt
	getOffset *sql.Stmt
}

func NewAdminLogStore(acc *qgen.Accumulator) (*SQLAdminLogStore, error) {
	return &SQLAdminLogStore{
		create:    acc.Insert("administration_logs").Columns("action, elementID, elementType, ipaddress, actorID, doneAt").Fields("?,?,?,?,?,UTC_TIMESTAMP()").Prepare(),
		count:     acc.Count("administration_logs").Prepare(),
		getOffset: acc.Select("administration_logs").Columns("action, elementID, elementType, ipaddress, actorID, doneAt").Orderby("doneAt DESC").Limit("?,?").Prepare(),
	}, acc.FirstError()
}

// TODO: Make a store for this?
func (s *SQLAdminLogStore) Create(action string, elementID int, elementType string, ip string, actorID int) (err error) {
	_, err = s.create.Exec(action, elementID, elementType, ip, actorID)
	return err
}

func (s *SQLAdminLogStore) Count() (count int) {
	err := s.count.QueryRow().Scan(&count)
	if err != nil {
		LogError(err)
	}
	return count
}

func (s *SQLAdminLogStore) GetOffset(offset int, perPage int) (logs []LogItem, err error) {
	rows, err := s.getOffset.Query(offset, perPage)
	if err != nil {
		return logs, err
	}
	defer rows.Close()
	return buildLogList(rows)
}