package oss

import (
	"context"
	"strings"
	"testing"
	"time"
)

func signingFixture() Config {
	return Config{Endpoint: "https://oss.example.invalid", Region: "cn-test", Bucket: "test-bucket", AccessKeyID: "local-test-key", AccessKeySecret: "local-test-secret", GrantTTL: 15 * time.Minute, MaxAssetBytes: 1024}
}

func TestGrantLifetimeIsFixed(t *testing.T) {
	for _, ttl := range []time.Duration{-time.Second, time.Second, 14 * time.Minute, 16 * time.Minute, time.Hour} {
		cfg := signingFixture()
		cfg.GrantTTL = ttl
		if _, err := NewClient(cfg); err == nil {
			t.Fatalf("unsupported TTL accepted: %v", ttl)
		}
	}
	for _, ttl := range []time.Duration{0, 15 * time.Minute} {
		cfg := signingFixture()
		cfg.GrantTTL = ttl
		client, err := NewClient(cfg)
		if err != nil {
			t.Fatal(err)
		}
		now := time.Now().UTC()
		grant, err := client.Grant(context.Background(), "upload-a", "recordings/a", strings.Repeat("a", 64), 100, now)
		if err != nil {
			t.Fatal(err)
		}
		if grant.ExpiresAtUnixMs != now.Add(15*time.Minute).UnixMilli() {
			t.Fatal("grant is not exactly 15 minutes")
		}
		if grant.MaxBytes != 100 {
			t.Fatal("requested object size was changed")
		}
		if grant.GetBucket() != cfg.Bucket {
			t.Fatalf("Agent was not given the Dispatcher-owned original OSS bucket: %q", grant.GetBucket())
		}
	}
}

func TestGrantRejectsInvalidBoundsInsteadOfClamping(t *testing.T) {
	client, err := NewClient(signingFixture())
	if err != nil {
		t.Fatal(err)
	}
	for _, size := range []int64{-1, 0, 1025} {
		if _, err := client.Grant(context.Background(), "upload-a", "recordings/a", strings.Repeat("a", 64), size, time.Now()); err == nil {
			t.Fatalf("invalid size %d silently accepted", size)
		}
	}
}