FarLite

1.0.0

Scripts/Edit-LiteJsonLine.ps1

<#
.Synopsis
    Edits the current editor JSON line value.
 
.Description
    This command is called from JSON editors with the current line like:
 
        key : "<text>"
        key : {$date: "<text>"}
        key : {$guid: "<text>"}
        key : {$oid: "<text>"}
 
    The line may ends with a comma. The <text> is opened in another editor,
    dates are converted to local time and more friendly format. After saved
    changes the current line is updated, with a comma if it was there.
 
    On editing $date, if you remove the text and save the empty file, then the
    current date and time is inserted.
 
    On editing $guid and $oid a new generated value is inserted if you confirm.
#>

function Edit-LiteJsonLine {
    trap {Write-Error -ErrorRecord $_}

    $Editor = $Far.Editor
    if (!$Editor) {
        throw "Invoke this command from the editor."
    }

    # get line text
    $text = $Editor.Line.Text.TrimEnd()
    $isComma = $text.EndsWith(',')
    if ($isComma) {
        $text = $text.Substring(0, $text.Length - 1)
    }
    $spaces = if ($text -match '^\s*') {$matches[0]}
    $text = $text.Trim()

    # make json, get key and value
    $json = "{$text}"
    try {
        $doc = [Ldbc.Dictionary]::FromJson($json)
    }
    catch {
        throw "Cannot parse JSON: $json"
    }
    $key = @($doc.Keys)[0]
    $value = @($doc.Values)[0]

    # make text to edit
    if ($value -is [string]) {
        $text = $value
    }
    elseif ($value -is [datetime]) {
        $text = $value.ToString('yyyy-MM-dd HH:mm:ss')
    }
    elseif ($value -is [guid]) {
        if (Show-FarMessage 'Generate new Guid?' FarLite OkCancel) {
            return
        }
    }
    elseif ($value -is [LiteDB.ObjectId]) {
        if (Show-FarMessage 'Generate new ObjectId?' FarLite OkCancel) {
            return
        }
    }
    else {
        Show-FarMessage 'Edit this value directly.' FarLite
        return
    }

    # edit text
    if ($value -is [string] -or $value -is [datetime]) {
        $arg = New-Object FarNet.EditTextArgs -Property @{
            Title = "Edit value '$key'"
            Extension = '.txt'
            Text = $text
        }
        $text2 = $Far.AnyEditor.EditText($arg)
        if ($text2 -ceq $text) {
            return
        }
    }

    # make new value
    if ($value -is [string]) {
        $value2 = $text2
    }
    elseif ($value -is [datetime]) {
        $text2 = $text2.Trim()
        if ($text2) {
            $value2 = [datetime]$text2
        }
        else {
            $value2 = [datetime]([datetime]::Now.ToString('yyyy-MM-dd hh:mm:ss'))
        }
    }
    elseif ($value -is [guid]) {
        $value2 = [guid]::NewGuid()
    }
    elseif ($value -is [LiteDB.ObjectId]) {
        $value2 = [LiteDB.ObjectId]::NewObjectId()
    }

    # make new line
    $doc[$key] = $value2
    $text = $spaces + ($doc.Print().Trim().TrimStart('{').TrimEnd('}').Trim())
    if ($isComma) {
        $text += ','
    }

    # set new line
    $Editor.Line.Text = $text
    $Editor.Redraw()
}