// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
// Copyright (C) 2018 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package database

import (
	log "maunium.net/go/maulogger"
)

type PortalQuery struct {
	db  *Database
	log *log.Sublogger
}

func (pq *PortalQuery) CreateTable() error {
	_, err := pq.db.Exec(`CREATE TABLE IF NOT EXISTS portal (
		jid   VARCHAR(255),
		owner VARCHAR(255),
		mxid  VARCHAR(255) NOT NULL UNIQUE,

		PRIMARY KEY (jid, owner),
		FOREIGN KEY owner REFERENCES user(mxid)
	)`)
	return err
}

func (pq *PortalQuery) New() *Portal {
	return &Portal{
		db:  pq.db,
		log: pq.log,
	}
}

func (pq *PortalQuery) GetAll() (portals []*Portal) {
	rows, err := pq.db.Query("SELECT * FROM portal")
	if err != nil || rows == nil {
		return nil
	}
	defer rows.Close()
	for rows.Next() {
		portals = append(portals, pq.New().Scan(rows))
	}
	return
}

func (pq *PortalQuery) GetByJID(owner, jid string) *Portal {
	return pq.get("SELECT * FROM portal WHERE jid=? AND owner=?", jid, owner)
}

func (pq *PortalQuery) GetByMXID(mxid string) *Portal {
	return pq.get("SELECT * FROM portal WHERE mxid=?", mxid)
}

func (pq *PortalQuery) get(query string, args ...interface{}) *Portal {
	row := pq.db.QueryRow(query, args...)
	if row == nil {
		return nil
	}
	return pq.New().Scan(row)
}

type Portal struct {
	db  *Database
	log *log.Sublogger

	JID   string
	MXID  string
	Owner string
}

func (portal *Portal) Scan(row Scannable) *Portal {
	err := row.Scan(&portal.JID, &portal.MXID, &portal.Owner)
	if err != nil {
		portal.log.Fatalln("Database scan failed:", err)
	}
	return portal
}

func (portal *Portal) Insert() error {
	_, err := portal.db.Exec("INSERT INTO portal VALUES (?, ?, ?)", portal.JID, portal.Owner, portal.MXID)
	return err
}

func (portal *Portal) Update() error {
	_, err := portal.db.Exec("UPDATE portal SET mxid=? WHERE jid=? AND owner=?", portal.MXID, portal.JID, portal.Owner)
	return err
}