import Controller from '@ember/controller';
import DeleteUserModal from '../../../components/settings/staff/modals/delete-user';
import RegenerateStaffTokenModal from '../../../components/settings/staff/modals/regenerate-staff-token';
import SelectRoleModal from '../../../components/settings/staff/modals/select-role';
import SuspendUserModal from '../../../components/settings/staff/modals/suspend-user';
import TransferOwnershipModal from '../../../components/settings/staff/modals/transfer-ownership';
import UnsuspendUserModal from '../../../components/settings/staff/modals/unsuspend-user';
import UploadImageModal from '../../../components/settings/staff/modals/upload-image';
import boundOneWay from 'ghost-admin/utils/bound-one-way';
import copyTextToClipboard from 'ghost-admin/utils/copy-text-to-clipboard';
import isNumber from 'ghost-admin/utils/isNumber';
import windowProxy from 'ghost-admin/utils/window-proxy';
import {TrackedObject} from 'tracked-built-ins';
import {action, computed} from '@ember/object';
import {alias, and, not, or, readOnly} from '@ember/object/computed';
import {run} from '@ember/runloop';
import {inject as service} from '@ember/service';
import {task, taskGroup, timeout} from 'ember-concurrency';
import {tracked} from '@glimmer/tracking';

export default Controller.extend({
    ajax: service(),
    config: service(),
    ghostPaths: service(),
    membersUtils: service(),
    modals: service(),
    notifications: service(),
    session: service(),
    slugGenerator: service(),
    utils: service(),

    personalToken: null,
    personalTokenRegenerated: false,
    dirtyAttributes: false,

    init() {
        this._super(...arguments);
        this.clearScratchValues();
    },

    scratchValues: tracked(),

    saveHandlers: taskGroup().enqueue(),

    user: alias('model'),
    currentUser: alias('session.user'),

    email: readOnly('user.email'),
    slugValue: boundOneWay('user.slug'),

    canChangeEmail: not('isAdminUserOnOwnerProfile'),
    canChangePassword: not('isAdminUserOnOwnerProfile'),
    canToggleMemberAlerts: or('currentUser.isOwnerOnly', 'isAdminUserOnOwnProfile'),
    isAdminUserOnOwnProfile: and('currentUser.isAdminOnly', 'isOwnProfile'),
    canMakeOwner: and('currentUser.isOwnerOnly', 'isNotOwnProfile', 'user.isAdminOnly', 'isNotSuspended'),
    isAdminUserOnOwnerProfile: and('currentUser.isAdminOnly', 'user.isOwnerOnly'),
    isNotOwnersProfile: not('user.isOwnerOnly'),
    isNotSuspended: not('user.isSuspended'),
    rolesDropdownIsVisible: and('currentUser.isAdmin', 'isNotOwnProfile', 'isNotOwnersProfile'),
    userActionsAreVisible: or('deleteUserActionIsVisible', 'canMakeOwner'),

    isNotOwnProfile: not('isOwnProfile'),
    isOwnProfile: computed('user.id', 'currentUser.id', function () {
        return this.get('user.id') === this.get('currentUser.id');
    }),

    deleteUserActionIsVisible: computed('currentUser.{isAdmin,isEditor}', 'user.{isOwnerOnly,isAuthorOrContributor}', 'isOwnProfile', function () {
        // users can't delete themselves
        if (this.isOwnProfile) {
            return false;
        }

        if (
            // owners/admins can delete any non-owner user
            (this.currentUser.get('isAdmin') && !this.user.isOwnerOnly) ||
            // editors can delete any author or contributor
            (this.currentUser.get('isEditor') && this.user.isAuthorOrContributor)
        ) {
            return true;
        }

        return false;
    }),

    coverTitle: computed('user.name', function () {
        return `${this.get('user.name')}'s Cover Image`;
    }),

    roles: computed(function () {
        return this.store.query('role', {permissions: 'assign'});
    }),

    actions: {
        // TODO: remove those mutation actions once we have better
        // inline validations that auto-clear errors on input
        updatePassword(password) {
            this.set('user.password', password);
            this.get('user.hasValidated').removeObject('password');
            this.get('user.errors').remove('password');
        },

        updateNewPassword(password) {
            this.set('user.newPassword', password);
            this.get('user.hasValidated').removeObject('newPassword');
            this.get('user.errors').remove('newPassword');
        },

        updateNe2Password(password) {
            this.set('user.ne2Password', password);
            this.get('user.hasValidated').removeObject('ne2Password');
            this.get('user.errors').remove('ne2Password');
        }
    },

    deleteUser: action(async function () {
        if (this.deleteUserActionIsVisible) {
            await this.modals.open(DeleteUserModal, {
                user: this.model
            });
        }
    }),

    suspendUser: action(async function () {
        if (this.deleteUserActionIsVisible) {
            await this.modals.open(SuspendUserModal, {
                user: this.model,
                saveTask: this.save
            });
        }
    }),

    unsuspendUser: action(async function () {
        if (this.deleteUserActionIsVisible) {
            await this.modals.open(UnsuspendUserModal, {
                user: this.model,
                saveTask: this.save
            });
        }
    }),

    transferOwnership: action(async function () {
        if (this.canMakeOwner) {
            await this.modals.open(TransferOwnershipModal, {
                user: this.model
            });
        }
    }),

    regenerateStaffToken: action(async function () {
        const apiToken = await this.modals.open(RegenerateStaffTokenModal);

        if (apiToken) {
            this.set('personalToken', apiToken);
            this.set('personalTokenRegenerated', true);
        }
    }),

    selectRole: action(async function () {
        const newRole = await this.modals.open(SelectRoleModal, {
            currentRole: this.model.role
        });

        if (newRole) {
            this.user.role = newRole;
            this.set('dirtyAttributes', true);
        }
    }),

    changeCoverImage: action(async function () {
        await this.modals.open(UploadImageModal, {
            model: this.model,
            modelProperty: 'coverImage'
        });
    }),

    changeProfileImage: action(async function () {
        await this.modals.open(UploadImageModal, {
            model: this.model,
            modelProperty: 'profileImage'
        });
    }),

    setScratchValue: action(function (property, value) {
        this.scratchValues[property] = value;
    }),

    clearScratchValues() {
        this.scratchValues = new TrackedObject();
    },

    reset: action(function () {
        this.user.rollbackAttributes();
        this.user.password = '';
        this.user.newPassword = '';
        this.user.ne2Password = '';
        this.set('slugValue', this.user.slug);
        this.set('dirtyAttributes', false);
        this.clearScratchValues();
    }),

    toggleCommentNotifications: action(function (event) {
        this.user.commentNotifications = event.target.checked;
    }),

    toggleMemberEmailAlerts: action(function (type, event) {
        if (type === 'free-signup') {
            this.user.freeMemberSignupNotification = event.target.checked;
        } else if (type === 'paid-started') {
            this.user.paidSubscriptionStartedNotification = event.target.checked;
        } else if (type === 'paid-canceled') {
            this.user.paidSubscriptionCanceledNotification = event.target.checked;
        }
    }),

    updateSlug: task(function* (newSlug) {
        let slug = this.get('user.slug');

        newSlug = newSlug || slug;
        newSlug = newSlug.trim();

        // Ignore unchanged slugs or candidate slugs that are empty
        if (!newSlug || slug === newSlug) {
            this.set('slugValue', slug);

            return true;
        }

        let serverSlug = yield this.slugGenerator.generateSlug('user', newSlug);

        // If after getting the sanitized and unique slug back from the API
        // we end up with a slug that matches the existing slug, abort the change
        if (serverSlug === slug) {
            return true;
        }

        // Because the server transforms the candidate slug by stripping
        // certain characters and appending a number onto the end of slugs
        // to enforce uniqueness, there are cases where we can get back a
        // candidate slug that is a duplicate of the original except for
        // the trailing incrementor (e.g., this-is-a-slug and this-is-a-slug-2)

        // get the last token out of the slug candidate and see if it's a number
        let slugTokens = serverSlug.split('-');
        let check = Number(slugTokens.pop());

        // if the candidate slug is the same as the existing slug except
        // for the incrementor then the existing slug should be used
        if (isNumber(check) && check > 0) {
            if (slug === slugTokens.join('-') && serverSlug !== newSlug) {
                this.set('slugValue', slug);

                return true;
            }
        }

        this.set('slugValue', serverSlug);
        this.set('dirtyAttributes', true);

        return true;
    }).group('saveHandlers'),

    save: task(function* () {
        let user = this.user;
        let slugValue = this.slugValue;
        let slugChanged;

        if (user.get('slug') !== slugValue) {
            slugChanged = true;
            user.set('slug', slugValue);
        }

        try {
            user = yield user.save();

            this.clearScratchValues();

            // If the user's slug has changed, change the URL and replace
            // the history so refresh and back button still work
            if (slugChanged) {
                let currentPath = window.location.hash;

                let newPath = currentPath.split('/');
                newPath[newPath.length - 1] = user.get('slug');
                newPath = newPath.join('/');

                windowProxy.replaceState({path: newPath}, '', newPath);
            }

            this.set('dirtyAttributes', false);
            this.notifications.closeAlerts('user.update');

            return user;
        } catch (error) {
            // validation engine returns undefined so we have to check
            // before treating the failure as an API error
            if (error) {
                this.notifications.showAPIError(error, {key: 'user.update'});
            }
        }
    }).group('saveHandlers'),

    saveViaKeyboard: action(function (event) {
        event.preventDefault();

        // trigger any set-on-blur actions
        const focusedElement = document.activeElement;
        focusedElement?.blur();

        // schedule save for when set-on-blur actions have finished
        run.schedule('actions', this, function () {
            focusedElement?.focus();
            this.save.perform();
        });
    }),

    copyContentKey: task(function* () {
        copyTextToClipboard(this.personalToken);
        yield timeout(this.isTesting ? 50 : 3000);
    })
});