package http

// handler_unit_test.go contains backend tests for package behavior, error paths, and regressions.

import (
	"bytes"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/gofiber/fiber/v3"

	"knowfoolery/backend/shared/infra/utils/validation"
)

// TestUpdateAuthAndValidationBranches ensures update auth and validation branches behavior is handled correctly.
func TestUpdateAuthAndValidationBranches(t *testing.T) {
	h := NewHandler(nil, validation.NewValidator(), nil, nil, true, 20, 100)
	app := fiber.New()
	app.Post("/leaderboard/update", h.Update)

	req := httptest.NewRequest(http.MethodPost, "/leaderboard/update", bytes.NewReader([]byte(`{}`)))
	res, err := app.Test(req)
	if err != nil {
		t.Fatalf("app.Test: %v", err)
	}
	defer res.Body.Close()
	if res.StatusCode != http.StatusForbidden {
		t.Fatalf("expected forbidden without auth claims, got %d", res.StatusCode)
	}

	app = fiber.New()
	app.Use(func(c fiber.Ctx) error {
		c.Locals("user_id", "user-1")
		c.Locals("user_roles", []string{"player"})
		return c.Next()
	})
	app.Post("/leaderboard/update", h.Update)
	req = httptest.NewRequest(http.MethodPost, "/leaderboard/update", bytes.NewReader([]byte(`{}`)))
	res, err = app.Test(req)
	if err != nil {
		t.Fatalf("app.Test: %v", err)
	}
	defer res.Body.Close()
	if res.StatusCode != http.StatusForbidden {
		t.Fatalf("expected forbidden for non-service/non-admin, got %d", res.StatusCode)
	}

	app = fiber.New()
	app.Use(func(c fiber.Ctx) error {
		c.Locals("user_id", "svc-1")
		c.Locals("user_roles", []string{"service"})
		return c.Next()
	})
	app.Post("/leaderboard/update", h.Update)

	req = httptest.NewRequest(http.MethodPost, "/leaderboard/update", bytes.NewReader([]byte("{")))
	req.Header.Set("Content-Type", "application/json")
	res, err = app.Test(req)
	if err != nil {
		t.Fatalf("app.Test: %v", err)
	}
	defer res.Body.Close()
	if res.StatusCode != http.StatusBadRequest {
		t.Fatalf("expected bad request for malformed json, got %d", res.StatusCode)
	}

	validShape := `{
		"session_id":"s1",
		"player_id":"u1",
		"player_name":"P",
		"total_score":1,
		"questions_asked":1,
		"questions_correct":1,
		"hints_used":0,
		"duration_seconds":10,
		"completed_at":"not-rfc3339",
		"completion_type":"completed"
	}`
	req = httptest.NewRequest(http.MethodPost, "/leaderboard/update", bytes.NewReader([]byte(validShape)))
	req.Header.Set("Content-Type", "application/json")
	res, err = app.Test(req)
	if err != nil {
		t.Fatalf("app.Test: %v", err)
	}
	defer res.Body.Close()
	if res.StatusCode != http.StatusBadRequest {
		t.Fatalf("expected bad request for completed_at format, got %d", res.StatusCode)
	}
}

// TestGetPlayerRankingForbiddenBranch ensures get player ranking forbidden branch behavior is handled correctly.
func TestGetPlayerRankingForbiddenBranch(t *testing.T) {
	h := NewHandler(nil, validation.NewValidator(), nil, nil, false, 20, 100)
	app := fiber.New()
	app.Use(func(c fiber.Ctx) error {
		c.Locals("user_id", "user-2")
		c.Locals("user_roles", []string{"player"})
		return c.Next()
	})
	app.Get("/leaderboard/players/:id", h.GetPlayerRanking)

	req := httptest.NewRequest(http.MethodGet, "/leaderboard/players/user-1?page=oops&page_size=-1", nil)
	res, err := app.Test(req)
	if err != nil {
		t.Fatalf("app.Test: %v", err)
	}
	defer res.Body.Close()
	if res.StatusCode != http.StatusForbidden {
		t.Fatalf("expected forbidden for non-owner non-admin, got %d", res.StatusCode)
	}
}

// TestHelperFunctions ensures helper functions behavior is handled correctly.
func TestHelperFunctions(t *testing.T) {
	if got := atoiWithDefault("", 3); got != 3 {
		t.Fatalf("expected default for empty input")
	}
	if got := atoiWithDefault("bad", 4); got != 4 {
		t.Fatalf("expected default for invalid input")
	}
	if got := atoiWithDefault("7", 4); got != 7 {
		t.Fatalf("expected parsed int")
	}
}