package clientapi_test

import (
	"net/http"
	"strings"
	"testing"
)

const profilePath = "/_matrix/client/v3/profile"

func TestProfileRoundTrip(t *testing.T) {
	ts := newTestServer(t, nil)
	acc := ts.register("alice", "superuser")

	// A fresh account has neither field, and the spec distinguishes that
	// from an empty one: clients fall back to the localpart.
	rec := ts.get(profilePath+"/"+acc.UserID, "")
	expectStatus(t, rec, http.StatusOK)
	body := jsonBody(t, rec)
	if _, present := body["displayname"]; present {
		t.Errorf("an unset display name must be omitted, got %s", rec.Body.String())
	}

	rec = ts.do(request{method: http.MethodPut, path: profilePath + "/" + acc.UserID + "/displayname",
		token: acc.AccessToken, body: map[string]any{"displayname": "Alice"}})
	expectStatus(t, rec, http.StatusOK)

	rec = ts.do(request{method: http.MethodPut, path: profilePath + "/" + acc.UserID + "/avatar_url",
		token: acc.AccessToken, body: map[string]any{"avatar_url": "mxc://warp.example/abc"}})
	expectStatus(t, rec, http.StatusOK)

	rec = ts.get(profilePath+"/"+acc.UserID, "")
	expectStatus(t, rec, http.StatusOK)
	body = jsonBody(t, rec)
	if body["displayname"] != "Alice" || body["avatar_url"] != "mxc://warp.example/abc" {
		t.Errorf("profile = %s", rec.Body.String())
	}

	// The per-field endpoints return only their own field.
	rec = ts.get(profilePath+"/"+acc.UserID+"/displayname", "")
	expectStatus(t, rec, http.StatusOK)
	body = jsonBody(t, rec)
	if body["displayname"] != "Alice" {
		t.Errorf("displayname = %v", body["displayname"])
	}
	if _, present := body["avatar_url"]; present {
		t.Error("/displayname must not include the avatar")
	}

	rec = ts.get(profilePath+"/"+acc.UserID+"/avatar_url", "")
	expectStatus(t, rec, http.StatusOK)
	if jsonBody(t, rec)["avatar_url"] != "mxc://warp.example/abc" {
		t.Errorf("avatar_url = %s", rec.Body.String())
	}
}

// TestProfileReadsArePublic covers the rule a member list depends on: a
// client showing somebody's name has no token for them.
func TestProfileReadsArePublic(t *testing.T) {
	ts := newTestServer(t, nil)
	acc := ts.register("alice", "superuser")

	rec := ts.do(request{method: http.MethodPut, path: profilePath + "/" + acc.UserID + "/displayname",
		token: acc.AccessToken, body: map[string]any{"displayname": "my_display_name"}})
	expectStatus(t, rec, http.StatusOK)

	for _, path := range []string{
		profilePath + "/" + acc.UserID,
		profilePath + "/" + acc.UserID + "/displayname",
	} {
		rec := ts.get(path, "")
		expectStatus(t, rec, http.StatusOK)
		if name := jsonBody(t, rec)["displayname"]; name != "my_display_name" {
			t.Errorf("GET %s without a token returned %v", path, name)
		}
	}
}

func TestProfileWritesAreOwnOnly(t *testing.T) {
	ts := newTestServer(t, nil)
	alice := ts.register("alice", "superuser")
	bob := ts.register("bob", "bobspassword")

	rec := ts.do(request{method: http.MethodPut, path: profilePath + "/" + alice.UserID + "/displayname",
		token: bob.AccessToken, body: map[string]any{"displayname": "not bob"}})
	expectError(t, rec, http.StatusForbidden, "M_FORBIDDEN")

	// An admin may, which is what lets the panel clean up a profile.
	ts.makeAdmin(bob)
	rec = ts.do(request{method: http.MethodPut, path: profilePath + "/" + alice.UserID + "/displayname",
		token: bob.AccessToken, body: map[string]any{"displayname": "set by an admin"}})
	expectStatus(t, rec, http.StatusOK)
}

func TestProfileWritesRequireAToken(t *testing.T) {
	ts := newTestServer(t, nil)
	acc := ts.register("alice", "superuser")

	rec := ts.do(request{method: http.MethodPut, path: profilePath + "/" + acc.UserID + "/displayname",
		body: map[string]any{"displayname": "Alice"}})
	expectError(t, rec, http.StatusUnauthorized, "M_MISSING_TOKEN")
}

func TestProfileOfUnknownUserIs404(t *testing.T) {
	ts := newTestServer(t, nil)

	expectError(t, ts.get(profilePath+"/@nobody:warp.example", ""),
		http.StatusNotFound, "M_NOT_FOUND")
}

func TestProfileRejectsMalformedUserID(t *testing.T) {
	ts := newTestServer(t, nil)

	expectError(t, ts.get(profilePath+"/@no-server-name", ""),
		http.StatusBadRequest, "M_INVALID_PARAM")
}

// TestProfileOfRemoteUserHonoursTheFederationSwitch is where PLAN.md
// section 3 shows up in the Client-Server API: with federation off there is
// no way to answer, and the spec's M_FORBIDDEN with a clear message is the
// honest reply.
func TestProfileOfRemoteUserHonoursTheFederationSwitch(t *testing.T) {
	ts := newTestServer(t, nil)

	rec := ts.get(profilePath+"/@bob:other.example", "")
	expectError(t, rec, http.StatusForbidden, "M_FORBIDDEN")
	if msg, _ := jsonBody(t, rec)["error"].(string); !strings.Contains(msg, "Federation is disabled") {
		t.Errorf("the message should say why, got %q", msg)
	}

	// With the switch on it is no longer a refusal, only something that is
	// not implemented until Phase 5.
	if err := ts.settings.SetFederationEnabled(t.Context(), true); err != nil {
		t.Fatalf("SetFederationEnabled: %v", err)
	}
	expectError(t, ts.get(profilePath+"/@bob:other.example", ""),
		http.StatusNotFound, "M_NOT_FOUND")
}

func TestProfileRejectsOverlongDisplayName(t *testing.T) {
	ts := newTestServer(t, nil)
	acc := ts.register("alice", "superuser")

	rec := ts.do(request{method: http.MethodPut, path: profilePath + "/" + acc.UserID + "/displayname",
		token: acc.AccessToken, body: map[string]any{"displayname": strings.Repeat("x", 1000)}})
	expectError(t, rec, http.StatusBadRequest, "M_TOO_LARGE")
}