package recording

import (
	"context"
	"testing"
	"time"

	"github.com/glebarez/sqlite"
	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
	validation "gitlab.com/mbugroup/lti-api.git/internal/modules/production/recordings/validations"
	"gitlab.com/mbugroup/lti-api.git/internal/utils"
	"gorm.io/gorm"
)

func TestMapDepletionsKeepsSourceWarehouseRoutes(t *testing.T) {
	sourceA := uint(11)
	sourceB := uint(12)

	got := MapDepletions(99, []validation.Depletion{
		{ProductWarehouseId: 21, SourceProductWarehouseId: &sourceA, Qty: 3},
		{ProductWarehouseId: 21, SourceProductWarehouseId: &sourceA, Qty: 2},
		{ProductWarehouseId: 21, SourceProductWarehouseId: &sourceB, Qty: 4},
	})

	if len(got) != 2 {
		t.Fatalf("expected 2 depletion routes, got %d", len(got))
	}

	routeQty := DepletionTotalsByRoute(got, func(item entity.RecordingDepletion) (uint, *uint, float64) {
		return item.ProductWarehouseId, item.SourceProductWarehouseId, item.Qty
	})

	if routeQty[DepletionRoute{ProductWarehouseId: 21, SourceProductWarehouseId: sourceA}] != 5 {
		t.Fatalf("expected source A qty 5, got %.2f", routeQty[DepletionRoute{ProductWarehouseId: 21, SourceProductWarehouseId: sourceA}])
	}
	if routeQty[DepletionRoute{ProductWarehouseId: 21, SourceProductWarehouseId: sourceB}] != 4 {
		t.Fatalf("expected source B qty 4, got %.2f", routeQty[DepletionRoute{ProductWarehouseId: 21, SourceProductWarehouseId: sourceB}])
	}
}

func TestMapEggsSetsProjectFlockKandangID(t *testing.T) {
	got := MapEggs(77, 44, 9, []validation.Egg{
		{ProductWarehouseId: 88, Qty: 10},
	})

	if len(got) != 1 {
		t.Fatalf("expected 1 egg row, got %d", len(got))
	}
	if got[0].ProjectFlockKandangId == nil || *got[0].ProjectFlockKandangId != 44 {
		t.Fatalf("expected project flock kandang id 44, got %+v", got[0].ProjectFlockKandangId)
	}
}

func TestAttachProductionStandardsClampsLayingPreStandardWeek(t *testing.T) {
	db := setupAttachProductionStandardTestDB(t)

	day := 91
	recordDate := time.Date(2026, 4, 2, 0, 0, 0, 0, time.UTC)
	chickInDate := time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC)
	recording := &entity.Recording{
		Id:                    501,
		ProjectFlockKandangId: 103,
		RecordDatetime:        recordDate,
		Day:                   &day,
		ProjectFlockKandang: &entity.ProjectFlockKandang{
			Id: 103,
			ProjectFlock: entity.ProjectFlock{
				Id:                   52,
				Category:             string(utils.ProjectFlockCategoryLaying),
				ProductionStandardId: 1,
				ProductionStandard: entity.ProductionStandard{
					Id:   1,
					Name: "STD Laying",
				},
			},
		},
	}

	actualWeek := computeTransferAwareWeek(recording, map[uint]time.Time{103: chickInDate})
	if actualWeek != 13 {
		t.Fatalf("expected actual transfer-aware week 13, got %d", actualWeek)
	}

	if err := AttachProductionStandards(context.Background(), db, false, nil, recording); err != nil {
		t.Fatalf("expected attach standard to succeed, got %v", err)
	}

	if recording.Day == nil || *recording.Day != 91 {
		t.Fatalf("expected actual recording day to remain 91, got %+v", recording.Day)
	}
	if recording.StandardWeek == nil || *recording.StandardWeek != 18 {
		t.Fatalf("expected effective standard week 18, got %+v", recording.StandardWeek)
	}
	if recording.StandardFeedIntake == nil || *recording.StandardFeedIntake != 120 {
		t.Fatalf("expected feed intake std from week 18, got %+v", recording.StandardFeedIntake)
	}
	if recording.StandardHenDay == nil || *recording.StandardHenDay != 80 {
		t.Fatalf("expected hen day std from week 18, got %+v", recording.StandardHenDay)
	}
	if recording.StandardFcr == nil || *recording.StandardFcr != 2.1 {
		t.Fatalf("expected fcr std from week 18, got %+v", recording.StandardFcr)
	}
}

func setupAttachProductionStandardTestDB(t *testing.T) *gorm.DB {
	t.Helper()

	db, err := gorm.Open(sqlite.Open("file:"+t.Name()+"?mode=memory&cache=private"), &gorm.Config{})
	if err != nil {
		t.Fatalf("failed opening sqlite db: %v", err)
	}

	statements := []string{
		`CREATE TABLE production_standard_details (
			id INTEGER PRIMARY KEY,
			production_standard_id INTEGER NOT NULL,
			week INTEGER NOT NULL,
			target_hen_day_production NUMERIC NULL,
			target_hen_house_production NUMERIC NULL,
			target_egg_weight NUMERIC NULL,
			target_egg_mass NUMERIC NULL,
			standard_fcr NUMERIC NULL,
			created_at TIMESTAMP NULL,
			updated_at TIMESTAMP NULL
		)`,
		`CREATE TABLE standard_growth_details (
			id INTEGER PRIMARY KEY,
			production_standard_id INTEGER NOT NULL,
			target_mean_bw NUMERIC NULL,
			max_depletion NUMERIC NULL,
			min_uniformity NUMERIC NOT NULL,
			week INTEGER NOT NULL,
			feed_intake NUMERIC NULL,
			created_at TIMESTAMP NULL,
			created_by INTEGER NOT NULL
		)`,
		`CREATE TABLE laying_transfer_targets (
			id INTEGER PRIMARY KEY,
			laying_transfer_id INTEGER NOT NULL,
			target_project_flock_kandang_id INTEGER NOT NULL,
			deleted_at TIMESTAMP NULL
		)`,
		`CREATE TABLE laying_transfers (
			id INTEGER PRIMARY KEY,
			source_project_flock_kandang_id INTEGER NULL,
			deleted_at TIMESTAMP NULL
		)`,
		`CREATE TABLE project_chickins (
			id INTEGER PRIMARY KEY,
			project_flock_kandang_id INTEGER NOT NULL,
			chick_in_date TIMESTAMP NOT NULL,
			deleted_at TIMESTAMP NULL
		)`,
		`INSERT INTO production_standard_details
			(id, production_standard_id, week, target_hen_day_production, target_hen_house_production, target_egg_weight, target_egg_mass, standard_fcr)
			VALUES (1, 1, 18, 80, 70, 55, 44, 2.1)`,
		`INSERT INTO standard_growth_details
			(id, production_standard_id, week, feed_intake, max_depletion, min_uniformity, created_by)
			VALUES (1, 1, 18, 120, 1.5, 80, 1)`,
		`INSERT INTO laying_transfers (id, source_project_flock_kandang_id, deleted_at) VALUES
			(77, 83, NULL)`,
		`INSERT INTO laying_transfer_targets (id, laying_transfer_id, target_project_flock_kandang_id, deleted_at) VALUES
			(88, 77, 103, NULL)`,
		`INSERT INTO project_chickins (id, project_flock_kandang_id, chick_in_date, deleted_at) VALUES
			(99, 83, '2026-01-01 00:00:00', NULL)`,
	}

	for _, stmt := range statements {
		if err := db.Exec(stmt).Error; err != nil {
			t.Fatalf("failed preparing schema: %v", err)
		}
	}

	return db
}