package auth

import (
	"strings"
	"testing"
)

func TestDeviceSessionFromMetadata(t *testing.T) {
	tests := []struct {
		name       string
		metadata   RequestMetadata
		deviceType string
		system     string
		browser    string
		client     string
	}{
		{
			name:       "unknown desktop fallback",
			metadata:   RequestMetadata{},
			deviceType: "desktop",
			system:     "unknown",
			browser:    "unknown",
			client:     "PC-WEB",
		},
		{
			name: "desktop chrome",
			metadata: RequestMetadata{
				UserAgent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/126.0.0.0 Safari/537.36",
				Platform:  `"Windows"`,
				Mobile:    "?0",
			},
			deviceType: "desktop",
			system:     "Windows",
			browser:    "Chrome 126",
			client:     "PC-WEB",
		},
		{
			name: "mobile safari from client hints",
			metadata: RequestMetadata{
				UserAgent: "Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 Version/18.0 Mobile/15E148 Safari/604.1",
				Platform:  `"iOS"`,
				Mobile:    "?1",
			},
			deviceType: "mobile",
			system:     "iOS",
			browser:    "Safari 18",
			client:     "MOBILE-WEB",
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			session := deviceSessionFromMetadata(test.metadata)
			if session.DeviceType != test.deviceType || session.System != test.system || session.Client != test.client {
				t.Fatalf("unexpected device metadata %#v", session)
			}
			if !strings.HasPrefix(session.Browser, test.browser) {
				t.Fatalf("expected browser %q, got %q", test.browser, session.Browser)
			}
		})
	}
}