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71 lines
1.9 KiB
Markdown
71 lines
1.9 KiB
Markdown
## The *list-coffee-prices.ps1* Script
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list-coffee-prices.ps1
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## Parameters
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```powershell
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[<CommonParameters>]
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This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction,
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WarningVariable, OutBuffer, PipelineVariable, and OutVariable.
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```
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## Source Code
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```powershell
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<#
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.SYNOPSIS
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List coffee prices
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.DESCRIPTION
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This PowerShell script queries alphavantage.co and lists the global price of coffee (monthly, in cents per points).
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.EXAMPLE
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PS> ./list-coffee-prices
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.LINK
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https://github.com/fleschutz/PowerShell
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.NOTES
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Author: Markus Fleschutz | License: CC0
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#>
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function WriteBar { param([string]$Text, [float]$Value, [float]$Max)
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Write-Host "$Text " -noNewline
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$Num = ($Value * 100.0) / $Max
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while ($Num -ge 1.0) { Write-Host "█" -noNewline; $Num -= 1.0 }
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if ($Num -ge 0.875) {
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Write-Host -noNewLine "▉"
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} elseif ($Num -ge 0.75) {
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Write-Host -noNewLine "▊"
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} elseif ($Num -ge 0.625) {
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Write-Host -noNewLine "▋"
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} elseif ($Num -ge 0.5) {
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Write-Host -noNewLine "▌"
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} elseif ($Num -ge 0.375) {
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Write-Host -noNewLine "▍"
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} elseif ($Num -ge 0.25) {
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Write-Host -noNewLine "▎"
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} elseif ($Num -ge 0.125) {
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Write-Host -noNewLine "▏"
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}
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Write-Host " $Value"
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}
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try {
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$prices = (Invoke-WebRequest -URI "https://www.alphavantage.co/query?function=COFFEE&interval=monthly&apikey=demo" -userAgent "curl" -useBasicParsing).Content | ConvertFrom-Json
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""
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"$($prices.name) (by alphavantage.co, in $($prices.unit))"
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"---------------------------------------------------------------"
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foreach($item in $prices.data) {
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if ($Item.value -eq ".") { continue }
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[string]$date = $item.date
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[int]$value = $Item.value
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WriteBar $date $value 300.0
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}
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exit 0 # success
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} catch {
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"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
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exit 1
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}
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```
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*Generated by convert-ps2md.ps1 using the comment-based help of list-coffee-prices.ps1*
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