package handlers

import (
	"bytes"
	"context"
	"errors"
	"io"
	"net/http"
	"testing"
	"time"

	"github.com/gofiber/fiber/v2"

	"wucher/internal/domain/facility"
	"wucher/internal/service"
	"wucher/internal/shared/pkg/uuidv7"
)

type memFacilityRepo struct {
	rows map[string]*facility.Facility

	createErr  error
	updateErr  error
	deleteErr  error
	getByIDErr error
	listErr    error

	listRows  []facility.Facility
	listTotal int64

	getByIDFn func(id []byte, call int) (*facility.Facility, error)
	getCalls  int

	lastCreate       *facility.Facility
	lastUpdate       *facility.Facility
	lastDeleteID     []byte
	lastListFilter   string
	lastListCategory string
	lastListSort     string
	lastListLimit    int
	lastListOffset   int
}

func newMemFacilityRepo() *memFacilityRepo {
	return &memFacilityRepo{rows: map[string]*facility.Facility{}}
}

func (r *memFacilityRepo) Create(_ context.Context, row *facility.Facility) error {
	if r.createErr != nil {
		return r.createErr
	}
	if len(row.ID) == 0 {
		row.ID = uuidv7.MustBytes()
	}
	r.rows[string(row.ID)] = row
	r.lastCreate = row
	return nil
}

func (r *memFacilityRepo) Update(_ context.Context, row *facility.Facility) error {
	if r.updateErr != nil {
		return r.updateErr
	}
	r.rows[string(row.ID)] = row
	r.lastUpdate = row
	return nil
}

func (r *memFacilityRepo) Delete(_ context.Context, id []byte, _ []byte) error {
	if r.deleteErr != nil {
		return r.deleteErr
	}
	r.lastDeleteID = append([]byte(nil), id...)
	delete(r.rows, string(id))
	return nil
}

func (r *memFacilityRepo) GetByID(_ context.Context, id []byte) (*facility.Facility, error) {
	r.getCalls++
	if r.getByIDFn != nil {
		return r.getByIDFn(id, r.getCalls)
	}
	if r.getByIDErr != nil {
		return nil, r.getByIDErr
	}
	return r.rows[string(id)], nil
}

func (r *memFacilityRepo) List(_ context.Context, filter, category, sort string, limit, offset int) ([]facility.Facility, int64, error) {
	r.lastListFilter = filter
	r.lastListCategory = category
	r.lastListSort = sort
	r.lastListLimit = limit
	r.lastListOffset = offset
	if r.listErr != nil {
		return nil, 0, r.listErr
	}
	return r.listRows, r.listTotal, nil
}

func newFacilityTestApp(h *FacilityHandler) *fiber.App {
	app := fiber.New()
	app.Post("/api/v1/facilities/create", h.Create)
	app.Patch("/api/v1/facilities/update/:uuid", h.Update)
	app.Delete("/api/v1/facilities/delete/:uuid", h.Delete)
	app.Get("/api/v1/facilities/get/:uuid", h.Get)
	app.Get("/api/v1/facilities/get-all", h.List)
	app.Get("/api/v1/facilities/get-all/dt", h.ListDatatable)
	return app
}

func doJSONRequestFacility(t *testing.T, app *fiber.App, method, path string, body []byte) (*http.Response, []byte) {
	t.Helper()
	req, err := http.NewRequest(method, path, bytes.NewReader(body))
	if err != nil {
		t.Fatalf("new request: %v", err)
	}
	req.Header.Set("Content-Type", "application/json")
	resp, err := app.Test(req)
	if err != nil {
		t.Fatalf("app.Test: %v", err)
	}
	respBody, err := io.ReadAll(resp.Body)
	if err != nil {
		t.Fatalf("read body: %v", err)
	}
	return resp, respBody
}

func mustUUIDStringFacility(t *testing.T, id []byte) string {
	t.Helper()
	s, err := uuidv7.BytesToString(id)
	if err != nil {
		t.Fatalf("uuid to string: %v", err)
	}
	return s
}

func TestNewFacilityHandler(t *testing.T) {
	h := NewFacilityHandler(service.NewFacilityService(newMemFacilityRepo()))
	if h == nil || h.validate == nil {
		t.Fatalf("expected handler and validator initialized")
	}
}

func TestFacilityHandlerCreate(t *testing.T) {
	t.Run("invalid json", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		resp, _ := doJSONRequestFacility(t, app, http.MethodPost, "/api/v1/facilities/create", []byte(`{"data":`))
		if resp.StatusCode != http.StatusBadRequest {
			t.Fatalf("expected 400, got %d", resp.StatusCode)
		}
	})

	t.Run("validation error", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		resp, _ := doJSONRequestFacility(t, app, http.MethodPost, "/api/v1/facilities/create", []byte(`{}`))
		if resp.StatusCode != http.StatusUnprocessableEntity {
			t.Fatalf("expected 422, got %d", resp.StatusCode)
		}
	})

	t.Run("required attrs cannot be empty after trim", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		body := []byte(`{"data":{"type":"facility","attributes":{"category":"   ","name":"A","type":"B"}}}`)
		resp, _ := doJSONRequestFacility(t, app, http.MethodPost, "/api/v1/facilities/create", body)
		if resp.StatusCode != http.StatusUnprocessableEntity {
			t.Fatalf("expected 422, got %d", resp.StatusCode)
		}
	})

	t.Run("create error", func(t *testing.T) {
		repo := newMemFacilityRepo()
		repo.createErr = errors.New("create failed")
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		body := []byte(`{"data":{"type":"facility","attributes":{"category":"HEMS","name":"HEC Sling","type":"Sling"}}}`)
		resp, _ := doJSONRequestFacility(t, app, http.MethodPost, "/api/v1/facilities/create", body)
		if resp.StatusCode != http.StatusBadRequest {
			t.Fatalf("expected 400, got %d", resp.StatusCode)
		}
	})

	t.Run("success with refetch", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		actor := uuidv7.MustBytes()
		app := fiber.New()
		app.Use(func(c *fiber.Ctx) error {
			c.Locals("user_id", actor)
			return c.Next()
		})
		app.Post("/api/v1/facilities/create", h.Create)

		body := []byte(`{"data":{"type":"facility","attributes":{"category":" HEMS ","name":" HEC Sling ","type":" Sling ","sortkey":3,"length":" 10m ","weight":" 20kg ","electric":" yes ","note":" note ","is_active":false}}}`)
		resp, _ := doJSONRequestFacility(t, app, http.MethodPost, "/api/v1/facilities/create", body)
		if resp.StatusCode != http.StatusCreated {
			t.Fatalf("expected 201, got %d", resp.StatusCode)
		}
		if repo.lastCreate == nil {
			t.Fatalf("expected row created")
		}
		if repo.lastCreate.Category != "HEMS" || repo.lastCreate.Name != "HEC Sling" || repo.lastCreate.Type != "Sling" {
			t.Fatalf("expected trimmed required fields")
		}
		if repo.lastCreate.SortKey == nil || *repo.lastCreate.SortKey != 3 {
			t.Fatalf("expected sortkey mapped on create")
		}
		if repo.lastCreate.Length != "10m" || repo.lastCreate.Weight != "20kg" || repo.lastCreate.Electric != "yes" || repo.lastCreate.Note != "note" || repo.lastCreate.IsActive {
			t.Fatalf("expected optional fields mapped and trimmed")
		}
		if string(repo.lastCreate.CreatedBy) != string(actor) || string(repo.lastCreate.UpdatedBy) != string(actor) {
			t.Fatalf("expected created_by and updated_by from actor")
		}
	})

	t.Run("success fallback when refetch fails and defaults", func(t *testing.T) {
		repo := newMemFacilityRepo()
		repo.getByIDFn = func(_ []byte, call int) (*facility.Facility, error) {
			if call > 0 {
				return nil, errors.New("lookup failed")
			}
			return nil, nil
		}
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		body := []byte(`{"data":{"type":"facility","attributes":{"category":"DRY_LEASE","name":"Fuel Truck","type":"Ground"}}}`)
		resp, _ := doJSONRequestFacility(t, app, http.MethodPost, "/api/v1/facilities/create", body)
		if resp.StatusCode != http.StatusCreated {
			t.Fatalf("expected 201, got %d", resp.StatusCode)
		}
		if repo.lastCreate == nil {
			t.Fatalf("expected row created")
		}
		if repo.lastCreate.Length != "" || repo.lastCreate.Weight != "" || repo.lastCreate.Electric != "" || repo.lastCreate.Note != "" || !repo.lastCreate.IsActive {
			t.Fatalf("expected default optional values")
		}
	})
}

func TestFacilityHandlerUpdate(t *testing.T) {
	t.Run("invalid uuid", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/not-uuid", []byte(`{}`))
		if resp.StatusCode != http.StatusUnprocessableEntity {
			t.Fatalf("expected 422, got %d", resp.StatusCode)
		}
	})

	t.Run("invalid json", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		id := mustUUIDStringFacility(t, uuidv7.MustBytes())

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+id, []byte(`{"data":`))
		if resp.StatusCode != http.StatusBadRequest {
			t.Fatalf("expected 400, got %d", resp.StatusCode)
		}
	})

	t.Run("validation error", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		id := mustUUIDStringFacility(t, uuidv7.MustBytes())

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+id, []byte(`{"data":{"type":"x","id":"`+id+`","attributes":{"name":"A"}}}`))
		if resp.StatusCode != http.StatusUnprocessableEntity {
			t.Fatalf("expected 422, got %d", resp.StatusCode)
		}
	})

	t.Run("id required", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		id := mustUUIDStringFacility(t, uuidv7.MustBytes())

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+id, []byte(`{"data":{"type":"facility","id":"","attributes":{"name":"A"}}}`))
		if resp.StatusCode != http.StatusUnprocessableEntity {
			t.Fatalf("expected 422, got %d", resp.StatusCode)
		}
	})

	t.Run("id mismatch", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		id := mustUUIDStringFacility(t, uuidv7.MustBytes())
		other := mustUUIDStringFacility(t, uuidv7.MustBytes())

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+id, []byte(`{"data":{"type":"facility","id":"`+other+`","attributes":{"name":"A"}}}`))
		if resp.StatusCode != http.StatusUnprocessableEntity {
			t.Fatalf("expected 422, got %d", resp.StatusCode)
		}
	})

	t.Run("no attributes", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		id := mustUUIDStringFacility(t, uuidv7.MustBytes())

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+id, []byte(`{"data":{"type":"facility","id":"`+id+`","attributes":{}}}`))
		if resp.StatusCode != http.StatusUnprocessableEntity {
			t.Fatalf("expected 422, got %d", resp.StatusCode)
		}
	})

	t.Run("not found", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		id := mustUUIDStringFacility(t, uuidv7.MustBytes())

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+id, []byte(`{"data":{"type":"facility","id":"`+id+`","attributes":{"name":"A"}}}`))
		if resp.StatusCode != http.StatusNotFound {
			t.Fatalf("expected 404, got %d", resp.StatusCode)
		}
	})

	t.Run("category empty", func(t *testing.T) {
		repo := newMemFacilityRepo()
		id := uuidv7.MustBytes()
		repo.rows[string(id)] = &facility.Facility{ID: id, Category: "HEMS", Name: "Old", Type: "Sling"}
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		idStr := mustUUIDStringFacility(t, id)

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+idStr, []byte(`{"data":{"type":"facility","id":"`+idStr+`","attributes":{"category":"  "}}}`))
		if resp.StatusCode != http.StatusUnprocessableEntity {
			t.Fatalf("expected 422, got %d", resp.StatusCode)
		}
	})

	t.Run("name empty", func(t *testing.T) {
		repo := newMemFacilityRepo()
		id := uuidv7.MustBytes()
		repo.rows[string(id)] = &facility.Facility{ID: id, Category: "HEMS", Name: "Old", Type: "Sling"}
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		idStr := mustUUIDStringFacility(t, id)

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+idStr, []byte(`{"data":{"type":"facility","id":"`+idStr+`","attributes":{"name":"  "}}}`))
		if resp.StatusCode != http.StatusUnprocessableEntity {
			t.Fatalf("expected 422, got %d", resp.StatusCode)
		}
	})

	t.Run("type empty allowed", func(t *testing.T) {
		repo := newMemFacilityRepo()
		id := uuidv7.MustBytes()
		repo.rows[string(id)] = &facility.Facility{ID: id, Category: "HEMS", Name: "Old", Type: "Sling"}
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		idStr := mustUUIDStringFacility(t, id)

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+idStr, []byte(`{"data":{"type":"facility","id":"`+idStr+`","attributes":{"type":"  "}}}`))
		if resp.StatusCode != http.StatusOK {
			t.Fatalf("expected 200, got %d", resp.StatusCode)
		}
		if repo.lastUpdate == nil || repo.lastUpdate.Type != "" {
			t.Fatalf("expected type updated to empty string")
		}
	})

	t.Run("update error", func(t *testing.T) {
		repo := newMemFacilityRepo()
		id := uuidv7.MustBytes()
		repo.rows[string(id)] = &facility.Facility{ID: id, Category: "HEMS", Name: "Old", Type: "Sling"}
		repo.updateErr = errors.New("update failed")
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		idStr := mustUUIDStringFacility(t, id)

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+idStr, []byte(`{"data":{"type":"facility","id":"`+idStr+`","attributes":{"name":"New"}}}`))
		if resp.StatusCode != http.StatusBadRequest {
			t.Fatalf("expected 400, got %d", resp.StatusCode)
		}
	})

	t.Run("success with refetch", func(t *testing.T) {
		repo := newMemFacilityRepo()
		id := uuidv7.MustBytes()
		repo.rows[string(id)] = &facility.Facility{ID: id, Category: "HEMS", Name: "Old", Type: "Sling", Length: "1m", Weight: "1kg", Electric: "", Note: "old", IsActive: true}
		h := NewFacilityHandler(service.NewFacilityService(repo))
		actor := uuidv7.MustBytes()
		app := fiber.New()
		app.Use(func(c *fiber.Ctx) error {
			c.Locals("user_id", actor)
			return c.Next()
		})
		app.Patch("/api/v1/facilities/update/:uuid", h.Update)
		idStr := mustUUIDStringFacility(t, id)

		body := []byte(`{"data":{"type":"facility","id":"` + idStr + `","attributes":{"category":" DRY_LEASE ","name":" New Name ","type":" Truck ","sortkey":7,"length":" 12m ","weight":" 50kg ","electric":" AC ","note":" updated ","is_active":false}}}`)
		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+idStr, body)
		if resp.StatusCode != http.StatusOK {
			t.Fatalf("expected 200, got %d", resp.StatusCode)
		}
		if repo.lastUpdate == nil {
			t.Fatalf("expected row updated")
		}
		if repo.lastUpdate.Category != "DRY_LEASE" || repo.lastUpdate.Name != "New Name" || repo.lastUpdate.Type != "Truck" {
			t.Fatalf("expected trimmed required fields")
		}
		if repo.lastUpdate.SortKey == nil || *repo.lastUpdate.SortKey != 7 {
			t.Fatalf("expected sortkey mapped on update")
		}
		if repo.lastUpdate.Length != "12m" || repo.lastUpdate.Weight != "50kg" || repo.lastUpdate.Electric != "AC" || repo.lastUpdate.Note != "updated" || repo.lastUpdate.IsActive {
			t.Fatalf("expected updated optional values")
		}
		if string(repo.lastUpdate.UpdatedBy) != string(actor) {
			t.Fatalf("expected updated_by from actor")
		}
	})

	t.Run("success fallback when refetch fails", func(t *testing.T) {
		repo := newMemFacilityRepo()
		id := uuidv7.MustBytes()
		existing := &facility.Facility{ID: id, Category: "HEMS", Name: "Old", Type: "Sling"}
		repo.getByIDFn = func(_ []byte, call int) (*facility.Facility, error) {
			if call == 1 {
				return existing, nil
			}
			return nil, errors.New("second lookup failed")
		}
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		idStr := mustUUIDStringFacility(t, id)

		resp, _ := doJSONRequestFacility(t, app, http.MethodPatch, "/api/v1/facilities/update/"+idStr, []byte(`{"data":{"type":"facility","id":"`+idStr+`","attributes":{"note":" only note "}}}`))
		if resp.StatusCode != http.StatusOK {
			t.Fatalf("expected 200, got %d", resp.StatusCode)
		}
		if repo.lastUpdate == nil || repo.lastUpdate.Note != "only note" {
			t.Fatalf("expected note updated in fallback path")
		}
	})
}

func TestFacilityHandlerDelete(t *testing.T) {
	t.Run("invalid uuid", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		resp, _ := doJSONRequestFacility(t, app, http.MethodDelete, "/api/v1/facilities/delete/not-uuid", nil)
		if resp.StatusCode != http.StatusUnprocessableEntity {
			t.Fatalf("expected 422, got %d", resp.StatusCode)
		}
	})

	t.Run("delete error", func(t *testing.T) {
		repo := newMemFacilityRepo()
		repo.deleteErr = errors.New("delete failed")
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		id := mustUUIDStringFacility(t, uuidv7.MustBytes())

		resp, _ := doJSONRequestFacility(t, app, http.MethodDelete, "/api/v1/facilities/delete/"+id, nil)
		if resp.StatusCode != http.StatusBadRequest {
			t.Fatalf("expected 400, got %d", resp.StatusCode)
		}
	})

	t.Run("success", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		id := uuidv7.MustBytes()
		idStr := mustUUIDStringFacility(t, id)

		resp, _ := doJSONRequestFacility(t, app, http.MethodDelete, "/api/v1/facilities/delete/"+idStr, nil)
		if resp.StatusCode != http.StatusOK {
			t.Fatalf("expected 200, got %d", resp.StatusCode)
		}
		if string(repo.lastDeleteID) != string(id) {
			t.Fatalf("expected deleted id captured")
		}
	})
}

func TestFacilityHandlerGet(t *testing.T) {
	t.Run("invalid uuid", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		resp, _ := doJSONRequestFacility(t, app, http.MethodGet, "/api/v1/facilities/get/not-uuid", nil)
		if resp.StatusCode != http.StatusUnprocessableEntity {
			t.Fatalf("expected 422, got %d", resp.StatusCode)
		}
	})

	t.Run("not found", func(t *testing.T) {
		repo := newMemFacilityRepo()
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		id := mustUUIDStringFacility(t, uuidv7.MustBytes())

		resp, _ := doJSONRequestFacility(t, app, http.MethodGet, "/api/v1/facilities/get/"+id, nil)
		if resp.StatusCode != http.StatusNotFound {
			t.Fatalf("expected 404, got %d", resp.StatusCode)
		}
	})

	t.Run("success", func(t *testing.T) {
		repo := newMemFacilityRepo()
		id := uuidv7.MustBytes()
		repo.rows[string(id)] = &facility.Facility{ID: id, Category: "HEMS", Name: "HEC Sling", Type: "Sling", CreatedAt: time.Now(), UpdatedAt: time.Now()}
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)
		idStr := mustUUIDStringFacility(t, id)

		resp, _ := doJSONRequestFacility(t, app, http.MethodGet, "/api/v1/facilities/get/"+idStr, nil)
		if resp.StatusCode != http.StatusOK {
			t.Fatalf("expected 200, got %d", resp.StatusCode)
		}
	})
}

func TestFacilityHandlerList(t *testing.T) {
	t.Run("list error", func(t *testing.T) {
		repo := newMemFacilityRepo()
		repo.listErr = errors.New("list failed")
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		resp, _ := doJSONRequestFacility(t, app, http.MethodGet, "/api/v1/facilities/get-all", nil)
		if resp.StatusCode != http.StatusBadRequest {
			t.Fatalf("expected 400, got %d", resp.StatusCode)
		}
	})

	t.Run("success with category trim and clamp max", func(t *testing.T) {
		repo := newMemFacilityRepo()
		repo.listRows = []facility.Facility{{ID: uuidv7.MustBytes(), Category: "HEMS", Name: "HEC Sling", Type: "Sling", CreatedAt: time.Now(), UpdatedAt: time.Now()}}
		repo.listTotal = 1
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		resp, _ := doJSONRequestFacility(t, app, http.MethodGet, "/api/v1/facilities/get-all?search=abc&category=%20HEMS%20&page=0&limit=101&sort=-sortkey", nil)
		if resp.StatusCode != http.StatusOK {
			t.Fatalf("expected 200, got %d", resp.StatusCode)
		}
		if repo.lastListFilter != "abc" || repo.lastListCategory != "HEMS" || repo.lastListSort != "is_active DESC, CASE WHEN is_active = 1 AND sortkey IS NOT NULL AND sortkey >= 0 THEN 0 ELSE 1 END ASC, CASE WHEN is_active = 1 AND sortkey IS NOT NULL AND sortkey >= 0 THEN sortkey END DESC, name ASC" || repo.lastListLimit != 0 || repo.lastListOffset != 0 {
			t.Fatalf("unexpected list params: filter=%q category=%q sort=%q limit=%d offset=%d", repo.lastListFilter, repo.lastListCategory, repo.lastListSort, repo.lastListLimit, repo.lastListOffset)
		}
	})

	t.Run("success with clamp min", func(t *testing.T) {
		repo := newMemFacilityRepo()
		repo.listRows = []facility.Facility{}
		repo.listTotal = 0
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		resp, _ := doJSONRequestFacility(t, app, http.MethodGet, "/api/v1/facilities/get-all?page=2&limit=0&size=-1&search=needle", nil)
		if resp.StatusCode != http.StatusOK {
			t.Fatalf("expected 200, got %d", resp.StatusCode)
		}
		if repo.lastListFilter != "needle" || repo.lastListCategory != "" || repo.lastListLimit != 0 || repo.lastListOffset != 0 {
			t.Fatalf("unexpected list params: filter=%q category=%q limit=%d offset=%d", repo.lastListFilter, repo.lastListCategory, repo.lastListLimit, repo.lastListOffset)
		}
	})
}

func TestFacilityHandlerListDatatable(t *testing.T) {
	t.Run("list error", func(t *testing.T) {
		repo := newMemFacilityRepo()
		repo.listErr = errors.New("list failed")
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		resp, _ := doJSONRequestFacility(t, app, http.MethodGet, "/api/v1/facilities/get-all/dt", nil)
		if resp.StatusCode != http.StatusBadRequest {
			t.Fatalf("expected 400, got %d", resp.StatusCode)
		}
	})

	t.Run("success clamp max and page floor", func(t *testing.T) {
		repo := newMemFacilityRepo()
		repo.listRows = []facility.Facility{{ID: uuidv7.MustBytes(), Category: "DRY_LEASE", Name: "Fuel Truck", Type: "Ground", CreatedAt: time.Now(), UpdatedAt: time.Now()}}
		repo.listTotal = 1
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		resp, _ := doJSONRequestFacility(t, app, http.MethodGet, "/api/v1/facilities/get-all/dt?page=0&limit=0&size=101&draw=7&search=abc&category=%20DRY_LEASE%20", nil)
		if resp.StatusCode != http.StatusOK {
			t.Fatalf("expected 200, got %d", resp.StatusCode)
		}
		if repo.lastListFilter != "abc" || repo.lastListCategory != "DRY_LEASE" || repo.lastListSort != "" || repo.lastListLimit != 100 || repo.lastListOffset != 0 {
			t.Fatalf("unexpected list params: filter=%q category=%q sort=%q limit=%d offset=%d", repo.lastListFilter, repo.lastListCategory, repo.lastListSort, repo.lastListLimit, repo.lastListOffset)
		}
	})

	t.Run("success clamp min", func(t *testing.T) {
		repo := newMemFacilityRepo()
		repo.listRows = []facility.Facility{}
		repo.listTotal = 0
		h := NewFacilityHandler(service.NewFacilityService(repo))
		app := newFacilityTestApp(h)

		resp, _ := doJSONRequestFacility(t, app, http.MethodGet, "/api/v1/facilities/get-all/dt?page=2&limit=0&size=-1", nil)
		if resp.StatusCode != http.StatusOK {
			t.Fatalf("expected 200, got %d", resp.StatusCode)
		}
		if repo.lastListLimit != 20 || repo.lastListOffset != 20 {
			t.Fatalf("unexpected list params: limit=%d offset=%d", repo.lastListLimit, repo.lastListOffset)
		}
	})
}

func TestFacilityResource(t *testing.T) {
	now := time.Now().UTC().Truncate(time.Second)
	row := &facility.Facility{
		ID:        uuidv7.MustBytes(),
		Category:  "HEMS",
		Name:      "HEC Sling",
		Type:      "Sling",
		SortKey:   intPtrFacilityHandler(5),
		Length:    "10m",
		Weight:    "20kg",
		Electric:  "yes",
		Note:      "ready",
		IsActive:  true,
		CreatedBy: uuidv7.MustBytes(),
		UpdatedBy: uuidv7.MustBytes(),
		CreatedAt: now,
		UpdatedAt: now,
	}

	res := facilityResource(row)
	if res.Type != "facility" {
		t.Fatalf("unexpected type: %s", res.Type)
	}
	if res.ID == "" {
		t.Fatalf("expected resource id")
	}
	if res.Attributes.Category != "HEMS" || res.Attributes.Name != "HEC Sling" || res.Attributes.Type != "Sling" {
		t.Fatalf("expected required attributes in resource")
	}
	if res.Attributes.Length != "10m" || res.Attributes.Weight != "20kg" || res.Attributes.Electric != "yes" || res.Attributes.Note != "ready" || !res.Attributes.IsActive {
		t.Fatalf("expected optional attributes in resource")
	}
	if res.Attributes.SortKey == nil || *res.Attributes.SortKey != 5 {
		t.Fatalf("expected sortkey in resource")
	}
	if res.Attributes.CreatedAt == "" || res.Attributes.UpdatedAt == "" {
		t.Fatalf("expected timestamp attributes in resource")
	}
	if res.Attributes.CreatedBy == "" {
		t.Fatalf("expected created_by in resource")
	}
	if res.Attributes.UpdatedBy == "" {
		t.Fatalf("expected updated_by in resource")
	}
}

func intPtrFacilityHandler(v int) *int { return &v }