// Called from ribbon button, passing through first primary record ID
function showCloseAsWon(opportunityId) {
    var alertButtons = [
        // Keep the alert open to allow for validation of required fields
        new Alert.Button("OK", function (responses) { closeOpportunityAsWon(responses, opportunityId); }, true, true),
        new Alert.Button("CANCEL")
    ];

    // Create the options for the alert
    var alertOptions = {
        title: "Close Opportunity",
        message: "Provide the following information about why this opportunity is being closed",
        height: 490,
        width: 450,
        id: "closeOpportunity",
        buttons: alertButtons
    };

    // Create the options for each of the fields. You can add in custom HTML to the label
    var statusOptions = {
        id: "statuscode",
        label: "Status Reason" + "<span style='color:red'>*</span>",
        value: 3, // Default value
        options: [{
            text: "Won",
            value: 3
        }]
    };

    var actualRevenueOptions = {
        id: "actualrevenue",
        label: "Actual Revenue" + "<span style='color:red'>*</span>",
        value: 0.0,
        type: "number"
    };

    // Specify additional HTML attributes to add to the field
    var actualRevenueExtra = {
        step: "0.01"
    };

    var closedDateOptions = {
        id: "closeddate",
        label: "Closed Date" + "<span style='color:red'>*</span>",
        value: new Date(), // Default to today
        type: "date"
    };

    var competitorOptions = {
        id: "competitor",
        label: "Competitor",
        entityTypes: ["competitor"]
    };

    var descriptionOptions = {
        id: "description",
        label: "Description"
    };

    // Create all the fields with their specified options and attributes
    var fields = [
        new Alert.OptionSet(statusOptions),
        new Alert.Input(actualRevenueOptions, actualRevenueExtra),
        new Alert.Input(closedDateOptions),
        new Alert.Lookup(competitorOptions),
        new Alert.MultiLine(descriptionOptions)
    ];

    new Alert(alertOptions).showPrompt(fields);
}

// This is the callback for the OK button
function closeOpportunityAsWon(promptResponse, opportunityId) {
    // promptResponse is an array, containing the entered values, e.g.:
    // 0: { id: "statuscode", value: 0 }
    // 1: { id: "actualrevenue", value: null }
    // 2: { id: "closeddate", value: null }
    // 3: { id: "competitor", value: null }
    // 4: { id: "description", value: null }

    // Get the values from the prompt responses
    var status = promptResponse.filter(a => a.id == "statuscode")[0].value;
    var actualRevenue = promptResponse.filter(a => a.id == "actualrevenue")[0].value;
    var closedDate = promptResponse.filter(a => a.id == "closeddate")[0].value;
    var competitor = promptResponse.filter(a => a.id == "competitor")[0].value;
    var description = promptResponse.filter(a => a.id == "description")[0].value;

    // Check if any of the required fields are not entered, then display an error
    if (status == null || actualRevenue == null || closedDate == null) {
        var requiredFields = [];
        if (status == null) { requiredFields.push("Status Code"); }
        if (actualRevenue == null) { requiredFields.push("Actual Revenue"); }
        if (closedDate == null) { requiredFields.push("Closed Date"); }

        var options = {
            title: "Validation Error",
            message: "The following fields are required to close the opportunity: " + requiredFields.join(", "),
            icon: "ERROR",
            id: "errorAlert"
        };

        new Alert(options).show();
    }
    else {
        // Close the main alert once all required fields are validated
        new Alert({ id: "closeOpportunity" }).hide();

        // Call the WebApi to win the opportunity
        // Use the example by Microsoft found here to make a request similar to this: 
        var opportunityClose = {
            "opportunityid@odata.bind": "/opportunities(" + cleanIdField(opportunityId) + ")",
            "description": description,
            "subject": "Subject here...",
            "actualrevenue": actualRevenue,
            "actualend": closedDate
        }

        var winOpportunityReq = {
            OpportunityClose: opportunityClose,
            Status: 3, // Won
            getMetadata: function () {
                return {
                    boundParameter: null,
                    parameterTypes: {
                        "OpportunityClose": {
                            "typeName": "mscrm.opportunityclose",
                            "structuralProperty": 5 // Entity Type
                        },
                        "Status": {
                            "typeName": "Edm.Int32",
                            "structuralProperty": 1 // Primitive Type
                        }
                    },
                    operationType: 0, // Action
                    operationName: "WinOpportunity",
                }
            }
        };

        Xrm.WebApi.online.execute(winOpportunityReq).then(
            function (result) {
                if (result.ok) {
                    console.log("Status: %s %s", result.status, result.statusText);
                    // Perform other operations as required
                }
            },
            function (error) {
                console.log(error.message);
                // Handle error conditions
            });
    }
}

// Strip off the curly braces for WebApi requests
function cleanIdField(id) {
    id = id.replace("{", "");
    id = id.replace("}", "");
    return id;
}