Print error message

cntfy

@@ -0,0 +1,35 @@
+#!/usr/bin/env nu
+
+use ./lib/cntfy.nu
+
+def main [
+  subcommand: string@subcommands
+] {
+  if $subcommand == "help" {
+    print $"cntfy <subcommand>",
+    print ""
+    print "Subcommands: "
+
+    for subcommand in ( subcommands ) {
+      print ""
+      print $"(ansi {attr: b})($subcommand)(ansi reset)"
+      print ( help $"main ($subcommand)" )
+    }
+  } else {
+    let span = (metadata $subcommand).span;
+    error make {
+      msg: $"Unknown subcommand ($subcommand)",
+      label: {
+        text: "Unknown subcommand",
+        start: $span.start,
+        end: $span.end
+      }
+    }
+  }
+}
+
+def subcommands [] {
+  ["publish"]
+}
+
+alias `main publish` = cntfy publish

cntfy.nu

@@ -1,72 +0,0 @@
-#!/usr/bin/env nu
-
-def main [
-  subcommand: string@subcommands
-] {
-  if $subcommand == "help" {
-    print $"cntfy <subcommand>",
-    print ""
-    print "Subcommands: "
-
-    for subcommand in ( subcommands ) {
-      print ""
-      print $"(ansi {attr: b})($subcommand)(ansi reset)"
-      print ( help $"main ($subcommand)" )
-    }
-  } else {
-    let span = (metadata $subcommand).span;
-    error make {
-      msg: $"Unknown subcommand ($subcommand)",
-      label: {
-        text: "Unknown subcommand",
-        start: $span.start,
-        end: $span.end
-      }
-    }
-  }
-}
-
-def subcommands [] {
-  ["publish"]
-}
-
-# Publishes a message
-export def `main publish` [
-  topic: string
-  body: any
-  --title: string
-  --priority: string
-  --tags: string
-] {
-  let headers = ( [] 
-    | append [Title $title]
-    | append [Priority $priority]
-    | append [Tags $tags]
-  ) 
-  
-  let cfg = ( get_config )
-  http put -u $cfg.username -p $cfg.password -H $headers ( build_url $topic ) $body
-}
-
-def get_config [] {
-  let cfg_path = ( $env.HOME | path join ".config/cntfy/config.toml" )
-
-  if ($cfg_path | path exists ) == false {
-    let span = (metadata $cfg_path).span
-
-    error make {
-      msg: $"Config file ($cfg_path) does not exist",
-      label: {
-        text: "This file does not exist",
-        start: $span.start,
-        end: $span.end
-      }
-    }
-  }
-  
-  ( $cfg_path | open )
-}
-
-def build_url [topic: string] {
-  $"https://ntfy.trivernis.dev/($topic)"
-}

lib/cntfy.nu

@@ -0,0 +1,30 @@
+use ./config.nu
+
+# Publishes a message
+export def publish [
+  topic: string
+  message: string
+  --title: string
+  --priority: number
+  --tags: list<string>
+  --actions: list<any>
+  --icon: string
+] {
+  let cfg = ( config read_file cntfy )
+
+  if ( $env.NTFY_LIMIT? == 0) {
+    sleep 5sec
+    let-env NTFY_LIMIT = 3
+  }
+
+  let request_body = ({
+    topic: $topic
+    title: $title
+    message: $message
+    tags: ( $tags | append  ( hostname ) )
+    priority: $priority
+    actions: $actions
+    icon: $icon
+  } | to json )
+  http put -u $cfg.username -p $cfg.password $cfg.url $request_body
+}

lib/config.nu

@@ -0,0 +1,27 @@
+# reads a config file
+export def read_file [app: string, filename = "config.toml"] {
+  get_path $app | path join $filename | open 
+}
+
+# returns the path to an apps config dir
+export def get_path [app: string] {
+  let home = $env.HOME?
+
+  if $home == null {
+    return ( "/etc" | path join $app )
+  }
+  let local = ( $home | path join ".config" | path join $app )
+
+  if ( $local | path exists ) {
+    $local
+  } else {
+    let etc_cfg = ( "/etc" | path join $app )
+
+    if ( $etc_cfg | path exists ) {
+      $etc_cfg
+    } else {
+      mkdir $local
+      $local
+    }
+  }
+}

lib/dockerhub.nu

@@ -0,0 +1,19 @@
+export def get_image_digest [image: string, tag: string] {
+  let token = ( get_token $image )
+  mut headers = ( [] 
+    | append [Accept "application/vnd.docker.distribution.manifest.v2+json"]
+    | append [Authorization $"Bearer ($token)"]
+  ) 
+
+  ( http get -H $headers $"https://registry.hub.docker.com/v2/($image)/manifests/($tag)"
+    | from json
+    | get config 
+    | get digest
+    | split row ":"
+    | get 1
+  )
+}
+
+def get_token [image: string] {
+  http get $"https://auth.docker.io/token?scope=repository:($image):pull&service=registry.docker.io" | get token
+}

lib/prelude.nu

@@ -0,0 +1,3 @@
+# prelude script that can be sourced into other scripts for all modules
+use ./cntfy.nu
+use ./config.nu

pacman-update-check

@@ -1,6 +1,6 @@
 #!/bin/env nu
 
-use cntfy.nu
+use ./lib/cntfy.nu
 
 # Checks for package updates
 def main [
@@ -11,6 +11,8 @@ def main [
       msg: "This script needs to be run as root"
     }
   }
+  pacman -Sy
+
   let updates = ( checkupdates | split row "\n" ) 
   let update_count = ( $updates | length )
 
@@ -28,7 +30,7 @@ def main [
       } else {
         $update_msg = ( $updates | str join "\n" )
       }
-      cntfy main publish --title $"($update_count) package[s] need to be updated" updates $update_msg
+      cntfy publish --tags [ pacman ] --title $"($update_count) package[s] need to be updated" updates $update_msg
     }
   }
 }

podman-update-check

@@ -0,0 +1,74 @@
+#!/bin/env nu
+use ./lib/cntfy.nu
+use ./lib/dockerhub.nu
+
+def main [  
+  --ntfy: bool
+] { 
+  let images = ( get_images )
+  let image_count = ( $images | length )
+  if $image_count  == 0 {
+    print "No images found"
+    return
+  }
+  print $"($image_count) local image[s] found"
+
+  ( $images
+    | where { |$it| $it.Names? != null } 
+    | insert Name {|$it| $it.Names | first } 
+    | where {|| needs_update }
+    | each {|| print_needs_update $ntfy }
+  )
+}
+
+def get_images [] {
+  podman images --no-trunc --format json | from json 
+}
+
+export def needs_update [] {
+  let data = $in
+  let name_parts = ( $data.Name | split row "/" --number 2 ) 
+  let registry = ( $name_parts | first )
+  let img_parts = ( $name_parts | last | split row ":" )
+  let image = ( $img_parts | get 0 )
+  let tag = ( $img_parts | get 1 )
+  let digest = $data.Id
+  print $"Checking if ($image):($tag) has updates on ($registry)"
+
+  if $registry == "docker.io" {
+    try {
+      ( dockerhub get_image_digest $image $tag ) != $digest
+    } catch {
+      print $"Failed to get image information ($in)"
+      false
+    }
+  } else {
+    print $"Host ($registry) is not supported"
+    false
+  }
+}
+
+def print_needs_update [ntfy: bool] {
+  let data = $in
+  let containers = ( containers_for_image $data.Name )
+  print $"Image `($data.Name)` needs to be updated. Used by ($containers | str join ', ')"
+
+  if $ntfy {
+    (
+      cntfy publish 
+        --tags [ podman $data.Name ] 
+        --priority 4 
+        --title $"($data.Name) outdated" 
+        "updates" $"Container ($data.Name) needs to be updated. Used by ($data.Containers) containers. Used by: ( $containers | str join '\n' )"
+    )
+  }
+}
+
+def containers_for_image [image: string] {
+  ( podman container ls --all --format json 
+    | from json 
+    | where Image == $image 
+    | insert Name {|$it| $it.Names? | get 0 } 
+    | get Name
+  )
+}