Add support for relationships

CHANGELOG.md

@@ -2,6 +2,30 @@
 
 All notable changes to `laravel-stats` will be documented in this file
 
+## 2.0.0 - 2022-02-20
+
+### Added
+
+- Added `StatsWriter` with classname support (`StatsWriter::for(MyModel::class)`) 
+- Added `StatsWriter` with eloquent-model support (`StatsWriter::for($eloquent)`) 
+- Added `StatsWriter` with "has-many"-relationship support (`StatsWriter::for($model->relationship())`) - other relationships are untested yet  
+- Added `StatsWriter` with custom-attribute support (`StatsWriter::for(MyModel::class, ['custom_column' => 'orders])`)
+- Extended `StatsQuery` with relationship-support (`StatsQuery::for($model->relationship())`)
+- Extended `StatsQuery` with additional attributes (`StatsQuery::for(StatsEvent::class, ['name' => 'OrderStats'])`)
+- Extended `BaseStats` with direct writer access (`OrderStats::writer()` as addition to `OrderStats::query()`)
+
+### Changed (breaks BC)
+
+- Changed visibility of `StatsQuery::for($model)->generatePeriods()` from `public` to `protected`
+- Replaced `StatsQuery::for($model)->getStatistic()` with `StatsQuery::for($model)->getAttributes()`
+- Removed `BaseStats->createEvent()` 
+
+### Migrations
+
+- Replace `StatsQuery::for(OrderStats::class)` with `OrderStats::query()`
+- Replace `StatsEvent::TYPE_SET` use `DataPoint::TYPE_SET` instead
+- Replace `StatsEvent::TYPE_CHANGE` use `DataPoint::TYPE_CHANGE` instead
+
 ## 1.0.1 - 2022-02-02
 
 - Add support for Laravel 9

README.md

@@ -27,7 +27,7 @@ grouped by week.
 ```php
 use Spatie\Stats\StatsQuery;
 
-$stats = StatsQuery::for(SubscriptionStats::class)
+$stats = SubscriptionStats::query()
     ->start(now()->subMonths(2))
     ->end(now()->subSecond())
     ->groupByWeek()
@@ -171,6 +171,47 @@ This will return an array containing arrayable `Spatie\Stats\DataPoint` objects.
 ]
 ```
 
+## Extended Use-Cases
+
+### Read and Write from a custom Model
+
+* Create a new table with `type (string)`, `value (bigInt)`, `created_at`, `updated_at` fields
+* Create a model and add `HasStats`-trait 
+
+```php
+StatsWriter::for(MyCustomModel::class)->set(123)
+StatsWriter::for(MyCustomModel::class, ['custom_column' => '123'])->increment(1)
+StatsWriter::for(MyCustomModel::class, ['another_column' => '234'])->decrement(1, now()->subDay())
+
+$stats = StatsQuery::for(MyCustomModel::class)
+    ->start(now()->subMonths(2))
+    ->end(now()->subSecond())
+    ->groupByWeek()
+    ->get();
+
+// OR
+
+$stats = StatsQuery::for(MyCustomModel::class, ['additional_column' => '123'])
+    ->start(now()->subMonths(2))
+    ->end(now()->subSecond())
+    ->groupByWeek()
+    ->get(); 
+```
+
+### Read and Write from a HasMany-Relationship 
+
+```php
+$tenant = Tenant::find(1) 
+
+StatsWriter::for($tenant->orderStats(), ['payment_type_column' => 'recurring'])->increment(1)
+
+$stats = StatsQuery::for($tenant->orderStats(), , ['payment_type_column' => 'recurring'])
+    ->start(now()->subMonths(2))
+    ->end(now()->subSecond())
+    ->groupByWeek()
+    ->get();
+```
+
 ## Testing
 
 ``` bash

composer.json

@@ -27,6 +27,7 @@
         "spatie/laravel-package-tools": "^1.9.2"
     },
     "require-dev": {
+        "doctrine/dbal": "^3.3",
         "orchestra/testbench": "^6.23|^7.0",
         "phpunit/phpunit": "^9.4",
         "vimeo/psalm": "^4.12"

src/BaseStats.php

@@ -14,41 +14,30 @@ public function getName(): string
 
     public static function query(): StatsQuery
     {
-        return new StatsQuery(static::class);
+        return StatsQuery::for(StatsEvent::class, [
+            'name' => (new static)->getName(),
+        ]);
     }
 
-    public static function increase(mixed $number = 1, ?DateTimeInterface $timestamp = null)
+    public static function writer(): StatsWriter
     {
-        $number = is_int($number) ? $number : 1;
-
-        $stats = new static;
-
-        $stats->createEvent(StatsEvent::TYPE_CHANGE, $number, $timestamp);
+        return StatsWriter::for(StatsEvent::class, [
+            'name' => (new static)->getName(),
+        ]);
     }
 
-    public static function decrease(mixed $number = 1, ?DateTimeInterface $timestamp = null)
+    public static function increase(mixed $number = 1, ?DateTimeInterface $timestamp = null)
     {
-        $number = is_int($number) ? $number : 1;
-
-        $stats = new static;
-
-        $stats->createEvent(StatsEvent::TYPE_CHANGE, -$number, $timestamp);
+        static::writer()->increase($number, $timestamp);
     }
 
-    public static function set(int $value, ?DateTimeInterface $timestamp = null)
+    public static function decrease(mixed $number = 1, ?DateTimeInterface $timestamp = null)
     {
-        $stats = new static;
-
-        $stats->createEvent(StatsEvent::TYPE_SET, $value, $timestamp);
+        static::writer()->decrease($number, $timestamp);
     }
 
-    protected function createEvent($type, $value, ?DateTimeInterface $timestamp = null): StatsEvent
+    public static function set(int $value, ?DateTimeInterface $timestamp = null)
     {
-        return StatsEvent::create([
-            'name' => $this->getName(),
-            'type' => $type,
-            'value' => $value,
-            'created_at' => $timestamp ?? now(),
-        ]);
+        static::writer()->set($value, $timestamp);
     }
 }

src/DataPoint.php

@@ -7,6 +7,10 @@
 
 class DataPoint implements Arrayable
 {
+
+    const TYPE_SET = 'set';
+    const TYPE_CHANGE = 'change';
+
     public function __construct(
         public Carbon $start,
         public Carbon $end,

src/Models/StatsEvent.php

@@ -2,46 +2,27 @@
 
 namespace Spatie\Stats\Models;
 
-use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Model;
+use Spatie\Stats\DataPoint;
+use Spatie\Stats\Traits\HasStats;
 
 class StatsEvent extends Model
 {
-    const TYPE_SET = 'set';
-    const TYPE_CHANGE = 'change';
+    use HasStats;
+
+    /**
+     * @deprecated use DataPoint::TYPE_SET
+     */
+    const TYPE_SET = DataPoint::TYPE_SET;
+
+    /**
+     * @deprecated use DataPoint::TYPE_CHANGE
+     */
+    const TYPE_CHANGE = DataPoint::TYPE_CHANGE;
 
     protected $casts = [
         'value' => 'integer',
     ];
 
     protected $guarded = [];
-
-    public function scopeGroupByPeriod(Builder $query, string $period): void
-    {
-        $periodGroupBy = static::getPeriodDateFormat($period);
-
-        $query->groupByRaw($periodGroupBy)->selectRaw("{$periodGroupBy} as period");
-    }
-
-    public static function getPeriodDateFormat(string $period): string
-    {
-        return match ($period) {
-            'year' => "date_format(created_at,'%Y')",
-            'month' => "date_format(created_at,'%Y-%m')",
-            'week' => "yearweek(created_at, 3)", // see https://stackoverflow.com/questions/15562270/php-datew-vs-mysql-yearweeknow
-            'day' => "date_format(created_at,'%Y-%m-%d')",
-            'hour' => "date_format(created_at,'%Y-%m-%d %H')",
-            'minute' => "date_format(created_at,'%Y-%m-%d %H:%i')",
-        };
-    }
-
-    public function scopeIncrements(Builder $query): void
-    {
-        $query->where('value', '>', 0);
-    }
-
-    public function scopeDecrements(Builder $query): void
-    {
-        $query->where('value', '<', 0);
-    }
 }