/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
import { AsyncIterableObject } from '../../../base/common/async.js';
import { CancellationToken } from '../../../base/common/cancellation.js';
import { onUnexpectedExternalError } from '../../../base/common/errors.js';
import { registerModelAndPositionCommand } from '../../browser/editorExtensions.js';
import { HoverProviderRegistry } from '../../common/modes.js';
export class HoverProviderResult {
    constructor(provider, hover, ordinal) {
        this.provider = provider;
        this.hover = hover;
        this.ordinal = ordinal;
    }
}
function executeProvider(provider, ordinal, model, position, token) {
    return __awaiter(this, void 0, void 0, function* () {
        try {
            const result = yield Promise.resolve(provider.provideHover(model, position, token));
            if (result && isValid(result)) {
                return new HoverProviderResult(provider, result, ordinal);
            }
        }
        catch (err) {
            onUnexpectedExternalError(err);
        }
        return undefined;
    });
}
export function getHover(model, position, token) {
    const providers = HoverProviderRegistry.ordered(model);
    const promises = providers.map((provider, index) => executeProvider(provider, index, model, position, token));
    return AsyncIterableObject.fromPromises(promises).coalesce();
}
export function getHoverPromise(model, position, token) {
    return getHover(model, position, token).map(item => item.hover).toPromise();
}
registerModelAndPositionCommand('_executeHoverProvider', (model, position) => getHoverPromise(model, position, CancellationToken.None));
function isValid(result) {
    const hasRange = (typeof result.range !== 'undefined');
    const hasHtmlContent = typeof result.contents !== 'undefined' && result.contents && result.contents.length > 0;
    return hasRange && hasHtmlContent;
}