package processapi

import (
	"context"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"

	"github.com/itworx/pulse/internal/auth"
	"github.com/itworx/pulse/internal/process"
)

type provider struct{ value process.Snapshot }

func (p provider) Snapshot(context.Context) (process.Snapshot, error) { return p.value, nil }

func request(path string) *http.Request {
	r := httptest.NewRequest(http.MethodGet, path, nil)
	return r.WithContext(auth.WithPrincipal(r.Context(), auth.Principal{Subject: "viewer", Role: auth.RoleViewer}))
}

func TestHandlerIsReadOnlyAndBounded(t *testing.T) {
	response := httptest.NewRecorder()
	Handler{Provider: provider{value: process.Snapshot{ContractVersion: process.ContractVersion, Source: process.Source{ID: "agent-1", State: "healthy"}, Processes: []process.Process{{PID: 1, Name: "init", State: "running"}}, Total: 1}}}.ServeHTTP(response, request("/api/v1/processes?limit=1&sort=cpu"))
	if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), `"pid":1`) {
		t.Fatalf("status=%d body=%s", response.Code, response.Body.String())
	}
	mutating := httptest.NewRecorder()
	Handler{}.ServeHTTP(mutating, httptest.NewRequest(http.MethodPost, "/api/v1/processes/1/kill", nil))
	if mutating.Code != http.StatusNotFound {
		t.Fatalf("mutation route status=%d", mutating.Code)
	}
}

func TestHandlerRequiresAuthentication(t *testing.T) {
	response := httptest.NewRecorder()
	Handler{}.ServeHTTP(response, httptest.NewRequest(http.MethodGet, "/api/v1/processes", nil))
	if response.Code != http.StatusUnauthorized {
		t.Fatalf("status=%d", response.Code)
	}
}

func TestHandlerAppliesNameAndContainerFilters(t *testing.T) {
	snapshot := process.Snapshot{Source: process.Source{ID: "agent", State: "healthy"}, Processes: []process.Process{{PID: 1, Name: "api", ContainerName: "pulse"}, {PID: 2, Name: "postgres", ContainerName: "database"}}, Total: 2}
	response := httptest.NewRecorder()
	Handler{Provider: provider{value: snapshot}}.ServeHTTP(response, request("/api/v1/processes?limit=25&sort=cpu&q=api&container=pulse"))
	if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), `"name":"api"`) || !strings.Contains(response.Body.String(), `"total":1`) {
		t.Fatalf("status=%d body=%s", response.Code, response.Body.String())
	}
}