add `Get-MatrixRoomMessages` (#3)

* add `Get-MatrixRoomMessages`

* Add custom MatrixMessage type

* update README with examples

PSMatrix.psd1

@@ -9,7 +9,7 @@
 @{
 
 # Script module or binary module file associated with this manifest.
-# RootModule = ''
+RootModule = 'PSMatrix.psm1'
 
 # Version number of this module.
 ModuleVersion = '0.0.1'
@@ -60,7 +60,9 @@ PowerShellVersion = '7.0'
 # ScriptsToProcess = @()
 
 # Type files (.ps1xml) to be loaded when importing this module
-# TypesToProcess = @()
+TypesToProcess = @(
+    'PSMatrixTypes.ps1xml'
+)
 
 # Format files (.ps1xml) to be loaded when importing this module
 # FormatsToProcess = @()
@@ -74,7 +76,8 @@ FunctionsToExport = @(
     'Remove-MatrixAccessToken',
     'Get-MatrixJoinedRooms',
     'Get-MatrixJoinedMembers',
-    'Get-MatrixRoomId'
+    'Get-MatrixRoomId',
+    'Get-MatrixRoomMessages'
 )
 
 # Cmdlets to export from this module, for best performance, do not use wildcards and do not delete the entry, use an empty array if there are no cmdlets to export.

PSMatrixTypes.ps1xml

@@ -0,0 +1,31 @@
+<Types>
+  <Type>
+    <Name>MatrixMessage</Name>
+    <Members>
+      <NoteProperty>
+        <Name>EventID</Name>
+        <Value>EventID</Value>
+      </NoteProperty>
+      <NoteProperty>
+        <Name>Sender</Name>
+        <Value>Sender</Value>
+      </NoteProperty>
+      <NoteProperty>
+        <Name>Body</Name>
+        <Value>Body</Value>
+      </NoteProperty>
+      <NoteProperty>
+        <Name>Format</Name>
+        <Value>Format</Value>
+      </NoteProperty>
+      <NoteProperty>
+        <Name>FormattedBody</Name>
+        <Value>FormattedBody</Value>
+      </NoteProperty>
+      <NoteProperty>
+        <Name>MsgType</Name>
+        <Value>MsgType</Value>
+      </NoteProperty>
+    </Members>
+  </Type>
+</Types>

README.md

@@ -1,2 +1,56 @@
 # PSMatrix
 PowerShell module for interacting with the Matrix API
+
+## Installation
+
+1. Clone repo:
+
+```bash
+git clone https://github.com/Thumbscrew/PSMatrix.git
+```
+
+2. Import module:
+
+```powershell
+Import-Module ./PSMatrix
+```
+
+## Getting Started
+
+1. Create a `PSCredential` object:
+
+```powershell
+$creds = Get-Credential
+
+PowerShell credential request
+Enter your credentials.
+User: username
+Password for user username: **************
+```
+
+2. Get an access token from your Matrix homeserver (this will be required for subsequent authenticated requests):
+
+```powershell
+# DeviceDisplayName is optional and will default to "PSMatrix"
+$token = New-MatrixAccessToken -ServerUrl "https://example.matrix.com" -Credentials $creds -DeviceDisplayName "PSMatrix"
+```
+
+## Examples
+
+### Get a list Matrix rooms you've joined
+
+```powershell
+$rooms = Get-MatrixJoinedRooms -ServerUrl "https://matrix.example.com" -AccessToken $token
+```
+
+### Get all members of a joined room
+
+```powershell
+Get-MatrixJoinedMembers -ServerUrl "https://matrix.example.com" -AccessToken $token -RoomId "!ehXvUhWNASUkSLvAGP:matrix.org"
+```
+
+### Log out of your session
+
+```powershell
+Remove-MatrixAccessToken -ServerUrl "https://matrix.example.com" -AccessToken $token
+```

public/Get-MatrixRoomMessages.ps1

@@ -0,0 +1,79 @@
+function Get-MatrixRoomMessages {
+    param(
+        [Parameter(Mandatory)]
+        [string]$ServerUrl,
+
+        [Parameter(Mandatory)]
+        [SecureString]$AccessToken,
+
+        [Parameter(Mandatory)]
+        [string]$UserId,
+
+        [Parameter(Mandatory)]
+        [string]$RoomId,
+
+        [Parameter(Mandatory = $false)]
+        [int]$Limit = 50
+    )
+
+    Write-Debug "URL: $url"
+    $headers = Get-MatrixAuthHeaders -AccessToken $AccessToken
+
+    try {
+        $filterUrl = New-MatrixUrl -ServerUrl $ServerUrl -ApiPath "_matrix/client/v3/user/$UserId/filter"
+        $filter = [PSCustomObject]@{
+            room = @{
+                rooms = @(
+                    $RoomId
+                )
+                timeline = @{
+                    limit = $Limit
+                    rooms = @(
+                        $RoomId
+                    )
+                    types = @(
+                        "m.room.message"
+                    )
+                }
+            }
+        } | ConvertTo-Json -Depth 3
+
+        $filterRes = Invoke-RestMethod -Uri $filterUrl -Method "POST" -Headers $headers -Body $filter
+    } catch {
+        Write-Error $_
+        return
+    }
+
+    try {
+        $filterId = $filterRes.filter_id
+        $url = New-MatrixUrl -ServerUrl $ServerUrl `
+            -ApiPath ("_matrix/client/v3/sync" `
+            + "?filter=$filterId" `
+            + "&full_state=true&set_presence=offline")
+
+        $res = Invoke-RestMethod -Uri $url -Headers $headers
+    } catch {
+        Write-Error $_
+        return
+    }
+
+    $events = $res.rooms.join.($RoomId).timeline.events
+
+    $formattedEvents = @()
+
+    $events | ForEach-Object {
+        $formattedEvent = [PSCustomObject]@{
+            EventID = $_.event_id
+            Sender = $_.sender
+            Body = $_.content.body
+            Format = $_.content.format
+            FormattedBody = $_.content.formatted_body
+            MsgType = $_.content.msgtype
+        }
+        $formattedEvent.PSObject.TypeNames.Insert(0, 'MatrixMessage')
+
+        $formattedEvents += $formattedEvent
+    }
+
+    return $formattedEvents
+}