package db

import (
	"path/filepath"
	"testing"
)

func TestVectorSimilarityDeduplication(t *testing.T) {
	tempDir := t.TempDir()
	dbPath := filepath.Join(tempDir, "test_dedup.db")

	database, err := InitDB(dbPath)
	if err != nil {
		t.Fatalf("failed to init db: %v", err)
	}
	defer func() { _ = database.Close() }()

	contentA := "Senior Software Engineer - Go Distributed Systems. Experience with microservices, gRPC, and SQLite database pipelines."
	contentSimilar := "Senior Software Engineer - Go Distributed Systems. Experience with microservices, gRPC, and SQLite database pipelines."
	contentDifferent := "Marketing Specialist - Social Media Campaign Manager. Experience with SEO, Google Ads, and brand strategy."

	// 1. Insert job A
	jobA, inserted1, err := database.InsertRawJob("canonical-1", nil, "Software Engineer", "Google", "Seattle", "https://google.com/job/1", contentA)
	if err != nil || !inserted1 {
		t.Fatalf("expected job A to be inserted: err=%v, inserted=%v", err, inserted1)
	}

	// 2. Insert job with identical/99%+ similar content -> should be deduplicated!
	_, inserted2, err := database.InsertRawJob("canonical-2-different-id", nil, "Learn more about Software Engineer", "Google", "Seattle", "https://google.com/job/1-dup", contentSimilar)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if inserted2 {
		t.Errorf("expected 99%% similar content job to be deduplicated (inserted=false), got inserted=true")
	}

	// 3. Insert job with distinct content -> should insert normally!
	_, inserted3, err := database.InsertRawJob("canonical-3", nil, "Marketing Specialist", "Google", "Seattle", "https://google.com/job/3", contentDifferent)
	if err != nil || !inserted3 {
		t.Fatalf("expected distinct job to insert normally: err=%v, inserted=%v", err, inserted3)
	}

	// Verify only 2 raw jobs exist in DB
	allJobs, err := database.getAllRawJobsForDeduplication()
	if err != nil {
		t.Fatalf("getAllRawJobsForDeduplication failed: %v", err)
	}
	if len(allJobs) != 2 {
		t.Errorf("expected 2 raw jobs in DB after deduplication, got %d", len(allJobs))
	}

	if allJobs[0].ID != jobA.ID {
		t.Errorf("first job mismatch")
	}
}