package db

import (
	"encoding/json"
	"testing"
)

func TestNewLearningRepository(t *testing.T) {
	pg := &PostgresDB{}
	repo := NewLearningRepository(pg)
	if repo == nil {
		t.Fatalf("expected repository instance")
	}
	if repo.db != pg {
		t.Fatalf("repository must keep provided db pointer")
	}
}

func TestLearningUserProfileJSONContract(t *testing.T) {
	profile := LearningUserProfile{
		UserID:              "u-1",
		DisplayName:         "Alex",
		Profile:             json.RawMessage(`{"target_track":"backend"}`),
		ResumeExtractedText: "resume text",
		OnboardingCompleted: true,
	}

	raw, err := json.Marshal(profile)
	if err != nil {
		t.Fatalf("marshal profile: %v", err)
	}

	var decoded map[string]interface{}
	if err := json.Unmarshal(raw, &decoded); err != nil {
		t.Fatalf("unmarshal profile json: %v", err)
	}
	if decoded["userId"] != "u-1" {
		t.Fatalf("unexpected userId: %v", decoded["userId"])
	}
	if decoded["onboardingCompleted"] != true {
		t.Fatalf("unexpected onboardingCompleted: %v", decoded["onboardingCompleted"])
	}
}