<?php
/**
 * SchemaTest.php
 *
 * -Description-
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @package    LibreNMS
 * @link       http://librenms.org
 * @copyright  2018 Tony Murray
 * @author     Tony Murray <murraytony@gmail.com>
 */

namespace LibreNMS\Tests;

use LibreNMS\DB\Schema;

class SchemaTest extends TestCase
{
    private $mock_schema = [
        "bills" => [
            "Columns" => [
                ["Field" => "bill_id", "Type" => "int(11)", "Null" => false, "Extra" => "auto_increment"],
            ],
            "Indexes" => ["bill_id" => ["Name" => "bill_id", "Columns" => ["bill_id"], "Unique" => true, "Type" => "BTREE"]]
        ],
        "bill_ports" => [
            "Columns" => [
                ["Field" => "bill_id", "Type" => "int(11)", "Null" => false, "Extra" => ""],
                ["Field" => "port_id", "Type" => "int(11)", "Null" => false, "Extra" => ""],
            ]
        ],
        "devices" => [
            "Columns" => [
                ["Field" => "device_id", "Type" => "int(11) unsigned", "Null" => false, "Extra" => "auto_increment"],
            ],
            "Indexes" => [
                "PRIMARY" => ["Name" => "PRIMARY", "Columns" => ["device_id"], "Unique" => true, "Type" => "BTREE"],
            ]
        ],
        "ports" => [
            "Columns" => [
                ["Field" => "port_id", "Type" => "int(11)", "Null" => false, "Extra" => "auto_increment"],
                ["Field" => "device_id", "Type" => "int(11)", "Null" => false, "Extra" => "", "Default" => "0"],
            ],
            "Indexes" => [
                "PRIMARY" => ["Name" => "PRIMARY", "Columns" => ["port_id"], "Unique" => true, "Type" => "BTREE"],
            ]
        ],
        "sensors" => [
            "Columns" => [
                ["Field" => "sensor_id", "Type" => "int(11)", "Null" => false, "Extra" => "auto_increment"],
                ["Field" => "device_id", "Type" => "int(11) unsigned", "Null" => false, "Extra" => "", "Default" => "0"],
            ],
            "Indexes" => [
                "PRIMARY" => ["Name" => "PRIMARY", "Columns" => ["sensor_id"], "Unique" => true, "Type" => "BTREE"],
            ]
        ],
        "sensors_to_state_indexes" => [
            "Columns" => [
                ["Field" => "sensors_to_state_translations_id", "Type" => "int(11)", "Null" => false, "Extra" => "auto_increment"],
                ["Field" => "sensor_id", "Type" => "int(11)", "Null" => false, "Extra" => ""],
                ["Field" => "state_index_id", "Type" => "int(11)", "Null" => false, "Extra" => ""]
            ],
            "Indexes" => [
                "PRIMARY" => ["Name" => "PRIMARY", "Columns" => ["sensors_to_state_translations_id"], "Unique" => true, "Type" => "BTREE"],
            ]
        ],
        "state_indexes" => [
            "Columns" => [
                ["Field" => "state_index_id", "Type" => "int(11)", "Null" => false, "Extra" => "auto_increment"],
            ],
            "Indexes" => [
                "PRIMARY" => ["Name" => "PRIMARY", "Columns" => ["state_index_id"], "Unique" => true, "Type" => "BTREE"],
            ]
        ],
        "state_translations" => [
            "Columns" => [
                ["Field" => "state_translation_id", "Type" => "int(11)", "Null" => false, "Extra" => "auto_increment"],
                ["Field" => "state_index_id", "Type" => "int(11)", "Null" => false, "Extra" => ""],
            ],
            "Indexes" => [
                "PRIMARY" => ["Name" => "PRIMARY", "Columns" => ["state_translation_id"], "Unique" => true, "Type" => "BTREE"],
            ]
        ]
    ];

    /**
     * @return Schema
     */
    private function getSchemaMock()
    {
        // use a Mock so we don't have to rely on the schema being stable.

        $schema = $this->getMockBuilder(Schema::class)
            ->setMethods(['getSchema'])
            ->getMock();

        $schema->method('getSchema')->willReturn($this->mock_schema);

        /** @var $schema Schema Mock of Schema */
        return $schema;
    }


    public function testTableRelationships()
    {
        // mock getSchema
        $schema = $this->getSchemaMock();

        $expected = [
            'bills' => [],
            'bill_ports' => ['bills', 'ports'],
            'devices' => [],
            'ports' => ['devices'],
            'sensors' => ['devices'],
            'sensors_to_state_indexes' => ['sensors', 'state_indexes'],
            'state_indexes' => [],
            'state_translations' => ['state_indexes'],
        ];

        $this->assertEquals($expected, $schema->getTableRelationships());
    }

    public function testFindRelationshipPath()
    {
        $schema = $this->getSchemaMock();

        $this->assertEquals(['devices'], $schema->findRelationshipPath('devices'));
        $this->assertEquals(['devices', 'ports'], $schema->findRelationshipPath('ports'));
        $this->assertEquals(['devices', 'ports', 'bill_ports'], $schema->findRelationshipPath('bill_ports'));
        $this->assertEquals(['devices', 'ports', 'bill_ports', 'bills'], $schema->findRelationshipPath('bills'));
        $this->assertEquals(
            ['devices', 'sensors', 'sensors_to_state_indexes', 'state_indexes', 'state_translations'],
            $schema->findRelationshipPath('state_translations')
        );
    }
}