import * as vscode from 'vscode';

function codeGeneratorQuickPickLogic(): undefined {
    const textEditor = vscode.window.activeTextEditor;
    if (!textEditor) {
        return undefined;
    }
    let thenable = vscode.window.showQuickPick(
        [
            {
                label: "Class name",
                detail: "Segments Minus One (Object || Array)",
                output: "%ClassName%"
            }, {
                label: "Class name (Camel-Cased)",
                detail: "Segments Minus One (Object || Array)",
                output: "%ClassNameCamelCased%"
            }, {
                label: "Class name (Camel-Cased and Plural)",
                detail: "Segments Minus One (Object || Array)",
                output: "%ClassNameCamelCasedPlural%"
            }, {
                label: "Class name (Plural)",
                detail: "Segments Minus One (Object || Array)",
                output: "%ClassNamePlural%"
            }, {
                label: "Key Without Brackets Segment at Level",
                detail: "",
                output: "%KeyWithoutBracketsSegmentAtLevel%"
            }, {
                label: "Name",
                detail: "Segments Last only name (no path)",
                output: "%Name%"
            }, {
                label: "Namespace",
                detail: "Namespace",
                output: "%namespace%"
            }, {
                label: "Name (Camel-Cased)",
                detail: "Segments Last only name (no path)",
                output: "%NameCamelCased%"
            }, {
                label: "Name (Camel-Cased and Plural)",
                detail: "Segments Last only name (no path)",
                output: "%NameCamelCasedPlural%"
            }, {
                label: "Name Detail",
                detail: "",
                output: "%NameDetail%"
            }, {
                label: "Name Detail (Camel-Cased)",
                detail: "",
                output: "%NameDetailCamelCased%"
            }, {
                label: "Name Detail (Humanized)",
                detail: "",
                output: "%NameDetailHumanized%"
            }, {
                label: "Name Detail (Humanized) *Collection",
                detail: "",
                output: "%NameDetailHumanizedCollection%"
            }, {
                label: "Name (Humanized)",
                detail: "Segments Last only name (no path)",
                output: "%NameHumanized%"
            }, {
                label: "Name (Null Segments)",
                detail: "",
                output: "%NameNullSegments%"
            }, {
                label: "Name (Null Segments) *Collection",
                detail: "",
                output: "%NameNullSegmentsCollection%"
            }, {
                label: "Name (Plural)",
                detail: "Segments Last only name (no path)",
                output: "%NamePlural%"
            }, {
                label: "Name Segments",
                detail: "",
                output: "%NameSegments%"
            }, {
                label: "Name Segments *Collection",
                detail: "",
                output: "%NameSegmentsCollection%"
            }, {
                label: "Path without Brackets (Singularized)",
                detail: "",
                output: "%PathWithoutBracketsSingularized%"
            }, {
                label: "Suggested Type",
                detail: "Type based on values in *.json file",
                output: "%SuggestedType%"
            }, {
                label: "Suggested Type Id",
                detail: "",
                output: "%SuggestedTypeId%"
            }, {
                label: "Suggested Type Id (Camel-Cased)",
                detail: "",
                output: "%SuggestedTypeIdCamelCased%"
            }, {
                label: "Type",
                detail: "Segments Minus One (!Object && !Array)",
                output: "%Type%"
            }, {
                label: "Type (Camel-Cased)",
                detail: "Segments Minus One (!Object && !Array)",
                output: "%TypeCamelCased%"
            }
        ]
    ).then(item => {
        if (!item) {
            return;
        }
        const selection = textEditor.selection;
        return textEditor.edit(editBuilder => {
            var range;
            if (selection.isEmpty) {
                editBuilder.insert(selection.start, item.output)
            }
            else {
                range = new vscode.Range(selection.start.line, selection.start.character, selection.end.line, selection.end.character);
                editBuilder.replace(range, item.output);
            }
        });
    });
    return undefined;
}

function insertDateTimeLogic(): undefined {
    const textEditor = vscode.window.activeTextEditor;
    if (!textEditor) {
        return undefined;
    }
    const date = new Date();
    const selection = textEditor.selection;
    textEditor.edit(editBuilder => {
        var range;
        if (selection.isEmpty) {
            editBuilder.insert(selection.start, date.toString())
        }
        else {
            range = new vscode.Range(selection.start.line, selection.start.character, selection.end.line, selection.end.character);
            editBuilder.replace(range, date.toString());
        }
    });
    return undefined;
}

function camelCase(str: string) {
    return str.replace(/(?:^\w|[A-Z]|\b\w|\s+)/g, function (match, index) {
        if (+match === 0) return "";
        return index === 0 ? match.toLowerCase() : match.toUpperCase();
    });
}

function transformToPopperCaseLogic(): undefined {
    const textEditor = vscode.window.activeTextEditor;
    if (!textEditor) {
        return undefined;
    }
    const selection = textEditor.selection;
    textEditor.edit(editBuilder => {
        var range;
        if (selection.isEmpty) {
            return undefined;
        }
        else {
            range = new vscode.Range(selection.start.line, selection.start.character, selection.end.line, selection.end.character);
            const highlighted = textEditor.document.getText(range);
            let camelCased = camelCase(highlighted);
            let properCased = camelCased.substring(0, 1).toUpperCase() + camelCased.substring(1, camelCased.length);
            editBuilder.replace(range, properCased);
        }
    });
    return undefined;
}

export const codeGeneratorQuickPick = () => codeGeneratorQuickPickLogic();
export const insertDateTime = () => insertDateTimeLogic();
export const transformToPopperCase = () => transformToPopperCaseLogic();