// Copyright (c) 2015 Spinpunch, Inc. All Rights Reserved.
// See License.txt for license information.

package store

import (
	"github.com/mattermost/platform/model"
	"github.com/mattermost/platform/utils"
	"strings"
)

type SqlTeamStore struct {
	*SqlStore
}

func NewSqlTeamStore(sqlStore *SqlStore) TeamStore {
	s := &SqlTeamStore{sqlStore}

	for _, db := range sqlStore.GetAllConns() {
		table := db.AddTableWithName(model.Team{}, "Teams").SetKeys(false, "Id")
		table.ColMap("Id").SetMaxSize(26)
		table.ColMap("Name").SetMaxSize(64)
		table.ColMap("Domain").SetMaxSize(64).SetUnique(true)
		table.ColMap("Email").SetMaxSize(128)
		table.ColMap("CompanyName").SetMaxSize(64)
		table.ColMap("AllowedDomains").SetMaxSize(500)
	}

	return s
}

func (s SqlTeamStore) UpgradeSchemaIfNeeded() {
	defaultValue := "0"
	if utils.Cfg.TeamSettings.AllowValetDefault {
		defaultValue = "1"
	}
	s.CreateColumnIfNotExists("Teams", "AllowValet", "AllowedDomains", "tinyint(1)", defaultValue)
}

func (s SqlTeamStore) CreateIndexesIfNotExists() {
}

func (s SqlTeamStore) Save(team *model.Team) StoreChannel {
	storeChannel := make(StoreChannel)

	go func() {
		result := StoreResult{}

		if len(team.Id) > 0 {
			result.Err = model.NewAppError("SqlTeamStore.Save",
				"Must call update for exisiting team", "id="+team.Id)
			storeChannel <- result
			close(storeChannel)
			return
		}

		team.PreSave()
		if result.Err = team.IsValid(); result.Err != nil {
			storeChannel <- result
			close(storeChannel)
			return
		}

		if err := s.GetMaster().Insert(team); err != nil {
			if strings.Contains(err.Error(), "Duplicate entry") && strings.Contains(err.Error(), "for key 'Domain'") {
				result.Err = model.NewAppError("SqlTeamStore.Save", "A team with that domain already exists", "id="+team.Id+", "+err.Error())
			} else {
				result.Err = model.NewAppError("SqlTeamStore.Save", "We couldn't save the team", "id="+team.Id+", "+err.Error())
			}
		} else {
			result.Data = team
		}

		storeChannel <- result
		close(storeChannel)
	}()

	return storeChannel
}

func (s SqlTeamStore) Update(team *model.Team) StoreChannel {

	storeChannel := make(StoreChannel)

	go func() {
		result := StoreResult{}

		team.PreUpdate()

		if result.Err = team.IsValid(); result.Err != nil {
			storeChannel <- result
			close(storeChannel)
			return
		}

		if oldResult, err := s.GetMaster().Get(model.Team{}, team.Id); err != nil {
			result.Err = model.NewAppError("SqlTeamStore.Update", "We encounted an error finding the team", "id="+team.Id+", "+err.Error())
		} else if oldResult == nil {
			result.Err = model.NewAppError("SqlTeamStore.Update", "We couldn't find the existing team to update", "id="+team.Id)
		} else {
			oldTeam := oldResult.(*model.Team)
			team.CreateAt = oldTeam.CreateAt
			team.Domain = oldTeam.Domain

			if count, err := s.GetMaster().Update(team); err != nil {
				result.Err = model.NewAppError("SqlTeamStore.Update", "We encounted an error updating the team", "id="+team.Id+", "+err.Error())
			} else if count != 1 {
				result.Err = model.NewAppError("SqlTeamStore.Update", "We couldn't update the team", "id="+team.Id)
			} else {
				result.Data = team
			}
		}

		storeChannel <- result
		close(storeChannel)
	}()

	return storeChannel
}

func (s SqlTeamStore) UpdateName(name string, teamId string) StoreChannel {

	storeChannel := make(StoreChannel)

	go func() {
		result := StoreResult{}

		if _, err := s.GetMaster().Exec("UPDATE Teams SET Name = ? WHERE Id = ?", name, teamId); err != nil {
			result.Err = model.NewAppError("SqlTeamStore.UpdateName", "We couldn't update the team name", "team_id="+teamId)
		} else {
			result.Data = teamId
		}

		storeChannel <- result
		close(storeChannel)
	}()

	return storeChannel
}

func (s SqlTeamStore) Get(id string) StoreChannel {
	storeChannel := make(StoreChannel)

	go func() {
		result := StoreResult{}

		if obj, err := s.GetReplica().Get(model.Team{}, id); err != nil {
			result.Err = model.NewAppError("SqlTeamStore.Get", "We encounted an error finding the team", "id="+id+", "+err.Error())
		} else if obj == nil {
			result.Err = model.NewAppError("SqlTeamStore.Get", "We couldn't find the existing team", "id="+id)
		} else {
			result.Data = obj.(*model.Team)
		}

		storeChannel <- result
		close(storeChannel)
	}()

	return storeChannel
}

func (s SqlTeamStore) GetByDomain(domain string) StoreChannel {
	storeChannel := make(StoreChannel)

	go func() {
		result := StoreResult{}

		team := model.Team{}

		if err := s.GetReplica().SelectOne(&team, "SELECT * FROM Teams WHERE Domain=?", domain); err != nil {
			result.Err = model.NewAppError("SqlTeamStore.GetByDomain", "We couldn't find the existing team", "domain="+domain+", "+err.Error())
		}

		result.Data = &team

		storeChannel <- result
		close(storeChannel)
	}()

	return storeChannel
}

func (s SqlTeamStore) GetTeamsForEmail(email string) StoreChannel {
	storeChannel := make(StoreChannel)

	go func() {
		result := StoreResult{}

		var data []*model.Team
		if _, err := s.GetReplica().Select(&data, "SELECT Teams.* FROM Teams, Users WHERE Teams.Id = Users.TeamId AND Users.Email = ?", email); err != nil {
			result.Err = model.NewAppError("SqlTeamStore.GetTeamsForEmail", "We encounted a problem when looking up teams", "email="+email+", "+err.Error())
		}

		result.Data = data

		storeChannel <- result
		close(storeChannel)
	}()

	return storeChannel
}