src/main/kotlin/de/uapcore/lightpit/dao/postgres/PGComponentDao.kt

/*
 * Copyright 2020 Mike Becker. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

package de.uapcore.lightpit.dao.postgres

import de.uapcore.lightpit.dao.AbstractComponentDao
import de.uapcore.lightpit.dao.Functions
import de.uapcore.lightpit.entities.Component
import de.uapcore.lightpit.entities.Project
import de.uapcore.lightpit.entities.User
import de.uapcore.lightpit.types.WebColor
import java.sql.Connection
import java.sql.PreparedStatement
import java.sql.ResultSet

class PGComponentDao(connection: Connection) : AbstractComponentDao() {

    private val query = "select id, name, node, color, ordinal, description, " +
            "userid, username, givenname, lastname, mail " +
            "from lpit_component " +
            "left join lpit_user on lead = userid"

    private val listStmt = connection.prepareStatement("$query where project = ? order by ordinal, lower(name)")
    private val findStmt = connection.prepareStatement("$query where id = ? ")
    private val findByNodeStmt = connection.prepareStatement("$query where project = ? and node = ?")
    private val insertStmt = connection.prepareStatement(
            "insert into lpit_component (name, node, color, ordinal, description, lead, project) values (?, ?, ?, ?, ?, ?, ?)"
    )
    private val updateStmt = connection.prepareStatement(
            "update lpit_component set name = ?, node = ?, color = ?, ordinal = ?, description = ?, lead = ? where id = ?"
    )

    override fun mapResult(rs: ResultSet): Component {
        val component = Component(rs.getInt("id"))
        component.name = rs.getString("name")
        component.node = rs.getString("node")
        component.color = try {
            WebColor(rs.getString("color"))
        } catch (ex: IllegalArgumentException) {
            WebColor("000000")
        }
        component.ordinal = rs.getInt("ordinal")
        component.description = rs.getString("description")
        component.lead = PGUserDao.mapResult(rs).takeUnless { rs.wasNull() }
        return component
    }

    private fun setColumns(stmt: PreparedStatement, instance: Component): Int {
        var column = 0
        stmt.setString(++column, instance.name)
        stmt.setString(++column, instance.node)
        stmt.setString(++column, instance.color.hex)
        stmt.setInt(++column, instance.ordinal)
        Functions.setStringOrNull(stmt, ++column, instance.description)
        setForeignKeyOrNull(stmt, ++column, instance.lead, User::id)
        return column
    }

    override fun save(instance: Component, parent: Project) {
        var column = setColumns(insertStmt, instance)
        insertStmt.setInt(++column, parent.id)
        insertStmt.executeUpdate()
    }

    override fun update(instance: Component): Boolean {
        var column = setColumns(updateStmt, instance)
        updateStmt.setInt(++column, instance.id)
        return updateStmt.executeUpdate() > 0
    }


    override fun list(parent: Project): List<Component> {
        listStmt.setInt(1, parent.id)
        return super.list(listStmt)
    }

    override fun find(id: Int): Component? {
        findStmt.setInt(1, id)
        return super.find(findStmt)
    }

    override fun findByNode(parent: Project, node: String): Component? {
        findByNodeStmt.setInt(1, parent.id)
        findByNodeStmt.setString(2, node)
        return super.find(findByNodeStmt)
    }
}