FeedlyApiModule

<#
More about Feedly API - #The feedly Cloud API - https://developer.feedly.com/
What are the differences with a regular access token?
A developer access token has a longer life than a regular access token: it expire after 30 days (instead of one week).
It can be renewed by feedly pro accounts. It is limited to 250 API requests per day
#>



######################### Global variable #######################################

#Tutaj wprowadź klucz niezbędny do skorzystania z Feedly Cloud API
$global:key = ''
$global:file =  "FeedlyRequestLog_$(Get-Date -Format ddMMyyyy).txt"
$global:category 

######################### End Global variable ####################################

function Check-FeedlyKey
{
    if(-not $global:key)
    {

$moreInfo = "How do I generate a developer access token?
Start here - https://feedly.com/v3/auth/dev. After you login with your feedly account, a link will be sent to your account’s email address (or in a Twitter Direct Message). 
Follow this link to retrieve your access token. If you logged in with a feedly pro account, the page will also contain a refresh token. 
Store this value securely: it enables you to renew an expired access token."

        Write-Host "Enter into the $PSCommandPath key to authenticate to the Cloud API feed. `r`n" -ForegroundColor Yellow
        Write-Host $moreInfo
    }
    else
    {
        return $true
    }
}

function Get-FeedlyRequestCount
{
 <#
.Synopsis
   Pobiera liczbe już wysłanych żądań do Feedly Api
.DESCRIPTION
   Umożliwia sprawdzenie ile żądań wysłaliśmy do Feedly Api oraz ile zostało żądań do przekroczenia limitu 250.
   Do poprawnego działania modułu niezbędne jest prowadzenie klucza oraz id usera.
   Szczegółów dotyczących feedly Cloud API -> https://developer.feedly.com/
.EXAMPLE
   Get-FeedlyRequestCount
   Api Feedly został odpytany - 2 razy. Pozostało 248.
.LINK
   Author: Mateusz Nadobnik 
   Link: blog.mnadobnik.pl
   Date: 
   Version: 0.0.0.1
    
   Keywords: Feedly Api
   Notes: 
#>
    $fullPath = Join-Path (Split-Path $PSCommandPath) -ChildPath $global:file 
    if(Test-Path $fullPath)
    {
        $countRequest = (Get-Content (Join-Path (Split-Path $PSCommandPath) -ChildPath $global:file)).Count 
    }
    else
    {
        $countRequest = 0 
    }

    Write-Host "Api Feedly został odpytany - $countRequest razy. Pozostało $(250-$countRequest)." -ForegroundColor Yellow
}

function Set-FeedlyCountRequest
{
   param($command)

   $fullPath = Join-Path (Split-Path $PSCommandPath) -ChildPath $global:file 
   if(Test-Path $fullPath)
   {
        Add-Content -Value "$(Get-Date);$command" -Path $fullPath 
        
   }
   else
   {
        Get-ChildItem -Path (Split-Path $PSCommandPath) -Filter "*.txt" -Exclude $formatFile | Remove-Item
        [void](New-Item -Path $fullPath -Value "$(Get-Date);$command`r`n")
   }
}

function Get-FeedlyTags
{
 <#
.Synopsis
    Pobranie listy tagów z aplikacji Feedly
.DESCRIPTION
    Pobranie listy tagów z aplikacji Feedly, wykorzystywana w funkcji Search-FeedlyContent.
.EXAMPLE
    [51]: Get-FeedlyTags
    id                                                               label
    --                                                               -----
    user/bf8aea46-87b6-454a-a514-56ffb5f52368/tag/Cloud              Cloud
    user/bf8aea46-87b6-454a-a514-56ffb5f52368/tag/Docker             Docker
.EXAMPLE
    [138]: Search-FeedlyContent -TagsName 'SQL' -QuerySearch "SPN OR Kerberos"
    Origin        : http://www.mssqltips.com/
    OriginId      : http://feedproxy.google.com/~r/MSSQLTips-LatestSqlServerTips/~3/8O7fhVODlhc/tip.asp
    Alternate     : http://feedproxy.google.com/~r/MSSQLTips-LatestSqlServerTips/~3/8O7fhVODlhc/tip.asp
    Title         : Script to Check and Auto Generate SPNs for SQL Server
    Summary       :
    LenghtSummary : 195
.LINK
   Author: Mateusz Nadobnik 
   Link: blog.mnadobnik.pl
   Date: 
   Version: 0.0.0.1
    
   Keywords: Feedly Api, Search
   Notes: 
#>
    param(
        [string]$key = $global:key
         )

    begin
    {
        $Object =@()
    }
    process
    {
        if(Check-FeedlyKey)
        {
            try
            {
                $category = 'http://cloud.feedly.com/v3/tags'
                $results = (Invoke-RestMethod -Uri $category -Headers @{'Authorization'=$key})
                #Counter request
                Set-FeedlyCountRequest -command "Get-FeedlyTags"
            }
            catch
            {
               Write-Host $results
                Write-Host ($Error[0] | ConvertFrom-Json).errorMessage -ForegroundColor Yellow
                return 
            }
        
            foreach($result in $results)
            {
                $Obj = @{} | Select TagsName, TagsStreamId
                $Obj.TagsStreamId = (($result.id).Replace('/','%2F')).Replace(' ','%20')
                if($result.label)
                {
                    $Obj.TagsName = $result.label
                }
                else
                {
                    $Obj.TagsName = 'All'   
                }
                $Object += $Obj
            }
        }
    }
    end
    {
        $global:category = $Object
        return $Object
    }
}

function Search-FeedlyContent
{
 <#
.Synopsis
    Wyszukiwanie newsów poprzez Feedly API.
.DESCRIPTION
    Funkcja umożliwia wyszukiwanie interesującego nas contentu spośród naszych otagowanuch newsów.
    Do poprawnego działania modułu niezbędne jest prowadzenie klucza oraz id usera.
    Szczegółów dotyczących feedly Cloud API -> https://developer.feedly.com/
.EXAMPLE
    [137]: Search-FeedlyContent -TagsName Docker -QuerySearch "copy"
    Origin        : http://www.sqlservercentral.com/blogs/
    OriginId      : /blogs/the-dba-who-came-in-from-the-cold/2017/05/10/copying-files-fromto-a-container/
    Alternate     : http://www.sqlservercentral.com/blogs/the-dba-who-came-in-from-the-cold/2017/05/10/copying-files-fromto
                    -a-container/
    Title         : Copying files from/to a container
    Summary       : <p>Last week I was having an issue with a SQL install within a container and to fix I needed to copy th
                    e setup log files out of the container onto the host so that I could review.</p>
                    <p>But how do you copy files out of a containe
    LenghtSummary : 7164
    Origin        : http://www.sqlservercentral.com/blogs/
    OriginId      : /blogs/the-dba-who-came-in-from-the-cold/2017/05/02/building-a-container-running-sql-server-2014-sp2-de
                    veloper/
    Alternate     : http://www.sqlservercentral.com/blogs/the-dba-who-came-in-from-the-cold/2017/05/02/building-a-container
                    -running-sql-server-2014-sp2-developer/
    Title         : Building a container running SQL Server 2014 SP2 Developer
    Summary       : <p>One of the things about working with SQL in Docker is that you kinda have to use the images that are
                     on the Docker Hub. Now this is great if you want SQL Server 2016 or 2017 but what about earlier versio
                    ns?</p>
                    <p>Now, this is
    LenghtSummary : 9488
.EXAMPLE
    [138]: Search-FeedlyContent -TagsName 'SQL' -QuerySearch "SPN OR Kerberos"
    Origin        : http://www.mssqltips.com/
    OriginId      : http://feedproxy.google.com/~r/MSSQLTips-LatestSqlServerTips/~3/8O7fhVODlhc/tip.asp
    Alternate     : http://feedproxy.google.com/~r/MSSQLTips-LatestSqlServerTips/~3/8O7fhVODlhc/tip.asp
    Title         : Script to Check and Auto Generate SPNs for SQL Server
    Summary       :
    LenghtSummary : 195
.LINK
   Author: Mateusz Nadobnik 
   Link: blog.mnadobnik.pl
   Date: 
   Version: 0.0.0.1
    
   Keywords: Feedly Api, Search
   Notes: 
#>
    [CmdletBinding()]
    [OutputType([String])]

   param(
        [Parameter(Mandatory=$true,ValueFromPipeline=$true,Position=1)]
        [string]$QuerySearch,
        [string]$key = $global:key
   ) 

   
   DynamicParam
   {
        if($global:category)
        {
            $categoryList = ($global:category).TagsName
        }
        else
        {
            try
            {
               $category = Get-FeedlyTags
               $categoryList = ($category).TagsName
            }
            finally
            {
                $categoryList = "API rate limit reached"
            }
        }

        $attributes = new-object System.Management.Automation.ParameterAttribute
        $attributes.ParameterSetName = "__AllParameterSets"
        $attributes.Mandatory = $true
        $attributes.Position = 0
        $attributes.ValueFromPipelineByPropertyName = $true

        $validateSetAttribute = New-Object System.Management.Automation.ValidateSetAttribute -ArgumentList $categoryList

        $attributeCollection = new-object  -Type System.Collections.ObjectModel.Collection[System.Attribute]
        $attributeCollection.Add($attributes)
        $attributeCollection.Add($validateSetAttribute)

        $dynParam1 = new-object -Type System.Management.Automation.RuntimeDefinedParameter("TagsName", [string], $attributeCollection)
            
        $paramDictionary = new-object -Type System.Management.Automation.RuntimeDefinedParameterDictionary
        $paramDictionary.Add("TagsName", $dynParam1)
        return $paramDictionary
    }
    
    begin
    {
        if($global:category)
        {
            $Category = ($global:category | Where TagsName -eq $PsBoundParameters.TagsName).TagsStreamId
        }
        else
        {
            $Category = ($category | Where TagsName -eq $PsBoundParameters.TagsName).TagsStreamId
        }
    }
    process
    {
        try
        {
            $searchUri = "http://cloud.feedly.com/v3/search/contents?streamId=$Category&query=$querySearch"
            $results = (Invoke-RestMethod -Uri $searchUri -Headers @{'Authorization'=$key})

            #Counter request
            Set-FeedlyCountRequest -command "Search-FeedlyContent"
        }
        catch
        {
            Write-Host ($Error[0] | ConvertFrom-Json).errorMessage -ForegroundColor Yellow
        }
    }
    end
    {
         ($results).items | select @{L="Origin";E={$_.origin.htmlUrl}}, `
                                   @{L='OriginId';E={$_.originId}}, `
                                   @{L="Alternate";E={$_.alternate.href}},  `
                                   @{L='Title';E={$_.title}}, `
                                   @{L='Summary';E={
                                        if(($_.summary.content).Length -gt 20)
                                        {
                                            ($_.summary.content).Substring(0,230)
                                        }
                                        else
                                        {
                                            ($_.summary.content)
                                        }}}, `
                                  @{L='LenghtSummary';E={($_.summary.content).Length }}
    }
}