Add importers in console and admin for flights/aircraft/subfleets and airport #194

app/Interfaces/ImportExport.php

@@ -0,0 +1,121 @@
+<?php
+
+namespace App\Interfaces;
+
+use App\Models\Airline;
+
+/**
+ * Common functionality used across all of the importers
+ * @package App\Interfaces
+ */
+class ImportExport
+{
+    public $status;
+
+    /**
+     * Hold the columns for the particular table
+     */
+    public static $columns = [];
+
+    /**
+     * Need to implement in a child class!
+     * @throws \RuntimeException
+     */
+    public function export()
+    {
+        throw new \RuntimeException('Calling export, needs to be implemented in child!');
+    }
+
+    /**
+     * Need to implement in a child class!
+     * @param array $row
+     * @param       $index
+     * @throws \RuntimeException
+     */
+    public function import(array $row, $index)
+    {
+        throw new \RuntimeException('Calling import, needs to be implemented in child!');
+    }
+
+    /**
+     * Get the airline from the ICAO
+     * @param $code
+     * @return \App\Models\Airline
+     */
+    public function getAirline($code)
+    {
+        return Airline::where('icao', $code)->first();
+    }
+
+    /**
+     * @return array
+     */
+    public function getColumns()
+    {
+        return static::$columns;
+    }
+
+    /**
+     * Set a key-value pair to an array
+     * @param       $kvp_str
+     * @param array $arr
+     */
+    protected function kvpToArray($kvp_str, array &$arr)
+    {
+        $item = explode('=', $kvp_str);
+        if (\count($item) === 1) {  # just a list?
+            $arr[] = trim($item[0]);
+        } else {  # actually a key-value pair
+            $k = trim($item[0]);
+            $v = trim($item[1]);
+            $arr[$k] = $v;
+        }
+    }
+
+    /**
+     * Parse a multi column values field. E.g:
+     * Y?price=200&cost=100; F?price=1200
+     *    or
+     * gate=B32;cost index=100
+     *
+     * Converted into a multi-dimensional array
+     *
+     * @param $field
+     * @return array|string
+     */
+    public function parseMultiColumnValues($field)
+    {
+        $ret = [];
+        $split_values = explode(';', $field);
+
+        # No multiple values in here, just a straight value
+        if (\count($split_values) === 1) {
+            return [$split_values[0]];
+        }
+
+        foreach ($split_values as $value) {
+            # This isn't in the query string format, so it's
+            # just a straight key-value pair set
+            if (strpos($value, '?') === false) {
+                $this->kvpToArray($value, $ret);
+                continue;
+            }
+
+            # This contains the query string, which turns it
+            # into the multi-level array
+
+            $query_str = explode('?', $value);
+            $parent = trim($query_str[0]);
+
+            $children = [];
+            $kvp = explode('&', trim($query_str[1]));
+            foreach ($kvp as $items) {
+                $this->kvpToArray($items, $children);
+            }
+
+            $ret[$parent] = $children;
+        }
+
+        return $ret;
+    }
+}