package api

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

	"codeberg.org/SquidSE/ClusterCanvas/service/internal/settings"
)

type actionsResponseTest struct {
	Actions []settings.Action `json:"actions"`
}

func TestActionsGetSeedsBuiltins(t *testing.T) {
	configDir := t.TempDir()
	cookie := seedCompletedSetup(t, configDir)
	router := NewRouter(configDir)

	request := withSession(httptest.NewRequest(http.MethodGet, "/api/v1/actions", nil), cookie)
	recorder := httptest.NewRecorder()
	router.ServeHTTP(recorder, request)

	if recorder.Code != http.StatusOK {
		t.Fatalf("expected status %d, got %d body=%s", http.StatusOK, recorder.Code, recorder.Body.String())
	}

	var payload actionsResponseTest
	if err := json.NewDecoder(recorder.Body).Decode(&payload); err != nil {
		t.Fatalf("decode response: %v", err)
	}
	if len(payload.Actions) != 3 {
		t.Fatalf("expected 3 builtins, got %d", len(payload.Actions))
	}
	for _, action := range payload.Actions {
		if !action.Builtin {
			t.Fatalf("expected builtin, got %#v", action)
		}
	}
}

func TestActionsCreatePatchDelete(t *testing.T) {
	configDir := t.TempDir()
	cookie := seedCompletedSetup(t, configDir)
	router := NewRouter(configDir)

	createBody := []byte(`{
		"name": "Echo host",
		"description": "Print the target IP",
		"kind": "shell",
		"body": "echo {{node.ip}}",
		"env": [{"name": "APP_HOME", "value": "/opt/app"}]
	}`)
	createReq := withSession(httptest.NewRequest(http.MethodPost, "/api/v1/actions", bytes.NewReader(createBody)), cookie)
	createRec := httptest.NewRecorder()
	router.ServeHTTP(createRec, createReq)
	if createRec.Code != http.StatusOK {
		t.Fatalf("create status %d body=%s", createRec.Code, createRec.Body.String())
	}

	var created actionsResponseTest
	if err := json.NewDecoder(createRec.Body).Decode(&created); err != nil {
		t.Fatalf("decode create: %v", err)
	}
	if len(created.Actions) != 4 {
		t.Fatalf("expected 4 actions after create, got %d", len(created.Actions))
	}
	custom := created.Actions[3]
	if custom.Builtin || custom.Name != "Echo host" || custom.Kind != settings.ActionKindShell {
		t.Fatalf("custom = %#v", custom)
	}

	patchBody := []byte(`{"name":"Echo target","body":"echo {{node.host}}"}`)
	patchReq := withSession(
		httptest.NewRequest(http.MethodPatch, "/api/v1/actions?id="+custom.ID, bytes.NewReader(patchBody)),
		cookie,
	)
	patchRec := httptest.NewRecorder()
	router.ServeHTTP(patchRec, patchReq)
	if patchRec.Code != http.StatusOK {
		t.Fatalf("patch status %d body=%s", patchRec.Code, patchRec.Body.String())
	}

	var patched actionsResponseTest
	if err := json.NewDecoder(patchRec.Body).Decode(&patched); err != nil {
		t.Fatalf("decode patch: %v", err)
	}
	found := false
	for _, action := range patched.Actions {
		if action.ID == custom.ID {
			found = true
			if action.Name != "Echo target" || action.Body != "echo {{node.host}}" {
				t.Fatalf("patched = %#v", action)
			}
		}
	}
	if !found {
		t.Fatal("patched action missing")
	}

	deleteReq := withSession(
		httptest.NewRequest(http.MethodDelete, "/api/v1/actions?id="+custom.ID, nil),
		cookie,
	)
	deleteRec := httptest.NewRecorder()
	router.ServeHTTP(deleteRec, deleteReq)
	if deleteRec.Code != http.StatusOK {
		t.Fatalf("delete status %d body=%s", deleteRec.Code, deleteRec.Body.String())
	}

	var deleted actionsResponseTest
	if err := json.NewDecoder(deleteRec.Body).Decode(&deleted); err != nil {
		t.Fatalf("decode delete: %v", err)
	}
	if len(deleted.Actions) != 3 {
		t.Fatalf("expected 3 after delete, got %d", len(deleted.Actions))
	}
}

func TestActionsRejectBuiltinMutationAndInvalidInput(t *testing.T) {
	configDir := t.TempDir()
	cookie := seedCompletedSetup(t, configDir)
	router := NewRouter(configDir)

	getReq := withSession(httptest.NewRequest(http.MethodGet, "/api/v1/actions", nil), cookie)
	getRec := httptest.NewRecorder()
	router.ServeHTTP(getRec, getReq)
	var listed actionsResponseTest
	if err := json.NewDecoder(getRec.Body).Decode(&listed); err != nil {
		t.Fatalf("decode list: %v", err)
	}
	builtinID := listed.Actions[0].ID

	patchBody := []byte(`{"name":"Nope"}`)
	patchReq := withSession(
		httptest.NewRequest(http.MethodPatch, "/api/v1/actions?id="+builtinID, bytes.NewReader(patchBody)),
		cookie,
	)
	patchRec := httptest.NewRecorder()
	router.ServeHTTP(patchRec, patchReq)
	if patchRec.Code != http.StatusBadRequest {
		t.Fatalf("expected builtin patch 400, got %d", patchRec.Code)
	}

	deleteReq := withSession(
		httptest.NewRequest(http.MethodDelete, "/api/v1/actions?id="+builtinID, nil),
		cookie,
	)
	deleteRec := httptest.NewRecorder()
	router.ServeHTTP(deleteRec, deleteReq)
	if deleteRec.Code != http.StatusBadRequest {
		t.Fatalf("expected builtin delete 400, got %d", deleteRec.Code)
	}

	badCreate := []byte(`{"name":"x","kind":"shell","body":"echo","env":[{"name":"bad-name","value":"1"}]}`)
	badReq := withSession(httptest.NewRequest(http.MethodPost, "/api/v1/actions", bytes.NewReader(badCreate)), cookie)
	badRec := httptest.NewRecorder()
	router.ServeHTTP(badRec, badReq)
	if badRec.Code != http.StatusBadRequest {
		t.Fatalf("expected invalid env 400, got %d", badRec.Code)
	}

	invalidKind := []byte(`{"name":"x","kind":"nope","body":"echo"}`)
	kindReq := withSession(httptest.NewRequest(http.MethodPost, "/api/v1/actions", bytes.NewReader(invalidKind)), cookie)
	kindRec := httptest.NewRecorder()
	router.ServeHTTP(kindRec, kindReq)
	if kindRec.Code != http.StatusBadRequest {
		t.Fatalf("expected invalid kind 400, got %d", kindRec.Code)
	}
}

func TestActionsMutationsRequirePermissions(t *testing.T) {
	configDir := t.TempDir()
	cookie := seedCompletedSetup(t, configDir)
	router := NewRouter(configDir)

	// Strip action permissions from Administrators.
	settingsPayload, err := settings.LoadSettings(configDir)
	if err != nil {
		t.Fatalf("LoadSettings: %v", err)
	}
	for index := range settingsPayload.Groups {
		if settingsPayload.Groups[index].Name != settings.AdministratorsGroupName {
			continue
		}
		filtered := make([]string, 0, len(settingsPayload.Groups[index].Permissions))
		for _, permission := range settingsPayload.Groups[index].Permissions {
			if permission == "actions.create" || permission == "actions.update" || permission == "actions.delete" {
				continue
			}
			filtered = append(filtered, permission)
		}
		settingsPayload.Groups[index].Permissions = filtered
	}
	if err := settings.SaveSettings(configDir, settingsPayload); err != nil {
		t.Fatalf("SaveSettings: %v", err)
	}

	createBody := []byte(`{"name":"x","kind":"shell","body":"echo"}`)
	createReq := withSession(httptest.NewRequest(http.MethodPost, "/api/v1/actions", bytes.NewReader(createBody)), cookie)
	createRec := httptest.NewRecorder()
	router.ServeHTTP(createRec, createReq)
	if createRec.Code != http.StatusForbidden {
		t.Fatalf("expected create 403, got %d body=%s", createRec.Code, createRec.Body.String())
	}

	patchReq := withSession(
		httptest.NewRequest(http.MethodPatch, "/api/v1/actions?id=custom", bytes.NewReader([]byte(`{"name":"y"}`))),
		cookie,
	)
	patchRec := httptest.NewRecorder()
	router.ServeHTTP(patchRec, patchReq)
	if patchRec.Code != http.StatusForbidden {
		t.Fatalf("expected patch 403, got %d", patchRec.Code)
	}

	deleteReq := withSession(httptest.NewRequest(http.MethodDelete, "/api/v1/actions?id=custom", nil), cookie)
	deleteRec := httptest.NewRecorder()
	router.ServeHTTP(deleteRec, deleteReq)
	if deleteRec.Code != http.StatusForbidden {
		t.Fatalf("expected delete 403, got %d", deleteRec.Code)
	}
}