first commit

.editorconfig

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+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.yml]
+indent_style = space
+indent_size = 2

.gitignore

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+.idea
+vendor/
+composer.lock

README.md

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+# Instagram Provider
+
+## Installation
+
+```
+composer require socialite-manager/instagram-provider
+```
+
+## Usage
+
+```php
+use Socialite\Provider\InstagramProvider;
+use Socialite\Socialite;
+
+Socialite::driver(InstagramProvider::class, $config);
+```

composer.json

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+{
+    "name": "socialite-manager/instagram-provider",
+    "description": "instagram provider",
+    "license": "MIT",
+    "require": {
+        "socialite-manager/socialite": "^1.0"
+    },
+    "require-dev": {
+        "phpstan/phpstan": "^0.9.2",
+        "squizlabs/php_codesniffer": "^3.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "Socialite\\Provider\\": "src/"
+        }
+    },
+    "scripts": {
+        "check": [
+            "@cs-check",
+            "@analyse"
+        ],
+        "cs-check": "phpcs --standard=PSR2 --colors -p ./src",
+        "cs-fix": "phpcbf --standard=PSR2 --colors ./src",
+        "analyse": "phpstan analyse -l max src"
+    }
+}

src/InstagramProvider.php

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+<?php
+
+namespace Socialite\Provider;
+
+use Socialite\Two\AbstractProvider;
+use Socialite\Two\User;
+
+class InstagramProvider extends AbstractProvider
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected $scopeSeparator = ' ';
+
+    /**
+     * {@inheritdoc}
+     */
+    protected $scopes = ['basic'];
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function getAuthUrl(string $state)
+    {
+        return $this->buildAuthUrlFromBase(
+            'https://api.instagram.com/oauth/authorize',
+            $state
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function getTokenUrl()
+    {
+        return 'https://api.instagram.com/oauth/access_token';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function getUserByToken(string $token)
+    {
+        $endpoint = '/users/self';
+        $query = [
+            'access_token' => $token,
+        ];
+        $signature = $this->generateSignature($endpoint, $query);
+        $query['sig'] = $signature;
+        $response = $this->getHttpClient()->get(
+            'https://api.instagram.com/v1/users/self',
+            [
+            'query' => $query,
+            'headers' => [
+                'Accept' => 'application/json',
+            ],
+            ]
+        );
+
+        return json_decode($response->getBody()->getContents(), true)['data'];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function mapUserToObject(array $user)
+    {
+        return (new User())->setRaw($user)->map([
+            'id' => $user['id'],
+            'nickname' => $user['username'],
+            'name' => $user['full_name'],
+            'email' => null,
+            'avatar' => $user['profile_picture'],
+        ]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function getTokenFields(string $code)
+    {
+        return array_merge(parent::getTokenFields($code), [
+            'grant_type' => 'authorization_code',
+        ]);
+    }
+
+    /**
+     * Allows compatibility for signed API requests.
+     *
+     * @param string $endpoint
+     * @param array $params
+     * @return string
+     */
+    protected function generateSignature(string $endpoint, array $params)
+    {
+        $sig = $endpoint;
+        ksort($params);
+        foreach ($params as $key => $val) {
+            $sig .= "|$key=$val";
+        }
+        $signing_key = $this->clientSecret;
+        return hash_hmac('sha256', $sig, $signing_key, false);
+    }
+}