feat: enable multiple IDE buttons in JetBrains

Add support for specifying a list of default IDEs to be displayed on
the Workspace page. This allows users to see multiple IDE options
simultaneously. Ensure no duplicates are included and validate
provided IDE codes against allowed set. Adjust logic to dynamically
render IDE buttons based on specified defaults, improving flexibility
in user interface setup.

jetbrains-gateway/main.tf

@@ -44,6 +44,26 @@ variable "default" {
   description = "Default IDE"
 }
 
+variable "defaults" {
+  default     = []
+  type        = list(string)
+  description = "List of default IDEs to be added to the Workspace page. Conflicts with the default variable."
+  # check if the list is unique
+  validation {
+    condition     = length(var.defaults) == length(toset(var.defaults))
+    error_message = "The defaults must not contain duplicates."
+  }
+  # check if defaults are valid jetbrains_ides
+  validation {
+    condition = (
+      alltrue([
+        for code in var.defaults : contains(["IU", "PS", "WS", "PY", "CL", "GO", "RM", "RD"], code)
+      ])
+    )
+    error_message = "The defaults must be a list of valid product codes. Valid product codes are ${join(",", ["IU", "PS", "WS", "PY", "CL", "GO", "RM", "RD"])}."
+  }
+}
+
 variable "order" {
   type        = number
   description = "The order determines the position of app in the UI presentation. The lowest order is shown first and apps with equal order are sorted by name (ascending order)."
@@ -124,7 +144,7 @@ variable "jetbrains_ide_versions" {
 
 variable "jetbrains_ides" {
   type        = list(string)
-  description = "The list of IDE product codes."
+  description = "The list of IDE product codes to be shown to the user. Does not apply when defaults are used."
   default     = ["IU", "PS", "WS", "PY", "CL", "GO", "RM", "RD"]
   validation {
     condition = (
@@ -239,17 +259,18 @@ locals {
     }
   }
 
-  icon          = local.jetbrains_ides[data.coder_parameter.jetbrains_ide.value].icon
-  json_data     = var.latest ? jsondecode(data.http.jetbrains_ide_versions[data.coder_parameter.jetbrains_ide.value].response_body) : {}
+  icon          = local.jetbrains_ides[try(data.coder_parameter.jetbrains_ide[0].value, var.defaults[0])].icon
+  json_data     = var.latest ? jsondecode(data.http.jetbrains_ide_versions[try(data.coder_parameter.jetbrains_ide[0].value, var.defaults[0])].response_body) : {}
   key           = var.latest ? keys(local.json_data)[0] : ""
-  display_name  = local.jetbrains_ides[data.coder_parameter.jetbrains_ide.value].name
-  identifier    = data.coder_parameter.jetbrains_ide.value
-  download_link = var.latest ? local.json_data[local.key][0].downloads.linux.link : local.jetbrains_ides[data.coder_parameter.jetbrains_ide.value].download_link
-  build_number  = var.latest ? local.json_data[local.key][0].build : local.jetbrains_ides[data.coder_parameter.jetbrains_ide.value].build_number
-  version       = var.latest ? local.json_data[local.key][0].version : var.jetbrains_ide_versions[data.coder_parameter.jetbrains_ide.value].version
+  display_name  = local.jetbrains_ides[try(data.coder_parameter.jetbrains_ide[0].value, var.defaults[0])].name
+  identifier    = try(data.coder_parameter.jetbrains_ide[0].value, var.defaults[0])
+  download_link = var.latest ? local.json_data[local.key][0].downloads.linux.link : local.jetbrains_ides[try(data.coder_parameter.jetbrains_ide[0].value, var.defaults[0])].download_link
+  build_number  = var.latest ? local.json_data[local.key][0].build : local.jetbrains_ides[try(data.coder_parameter.jetbrains_ide[0].value, var.defaults[0])].build_number
+  version       = var.latest ? local.json_data[local.key][0].version : var.jetbrains_ide_versions[try(data.coder_parameter.jetbrains_ide[0].value, var.defaults[0])].version
 }
 
 data "coder_parameter" "jetbrains_ide" {
+  count        = length(var.defaults) > 0 ? 0 : 1
   type         = "string"
   name         = "jetbrains_ide"
   display_name = "JetBrains IDE"
@@ -272,10 +293,11 @@ data "coder_workspace" "me" {}
 data "coder_workspace_owner" "me" {}
 
 resource "coder_app" "gateway" {
+  for_each     = length(var.defaults) > 0 ? toset(var.defaults) : toset([data.coder_parameter.jetbrains_ide[0].value])
   agent_id     = var.agent_id
   slug         = var.slug
-  display_name = local.display_name
-  icon         = local.icon
+  display_name = local.jetbrains_ides[each.value].name
+  icon         = local.jetbrains_ides[each.value].icon
   external     = true
   order        = var.order
   url = join("", [
@@ -292,38 +314,45 @@ resource "coder_app" "gateway" {
     "&token=",
     "$SESSION_TOKEN",
     "&ide_product_code=",
-    data.coder_parameter.jetbrains_ide.value,
+    each.value,
     "&ide_build_number=",
-    local.build_number,
+    local.jetbrains_ides[each.value].build_number,
     "&ide_download_link=",
-    local.download_link,
+    local.jetbrains_ides[each.value].download_link,
   ])
 }
 
 output "identifier" {
-  value = local.identifier
+  value       = local.identifier
+  description = "The product code of the JetBrains IDE."
 }
 
 output "display_name" {
-  value = local.display_name
+  value       = local.display_name
+  description = "The display name of the JetBrains IDE."
 }
 
 output "icon" {
-  value = local.icon
+  value       = local.icon
+  description = "The icon of the JetBrains IDE."
 }
 
 output "download_link" {
-  value = local.download_link
+  value       = local.download_link
+  description = "The download link of the JetBrains IDE."
 }
 
 output "build_number" {
-  value = local.build_number
+  value       = local.build_number
+  description = "The build number of the JetBrains IDE."
 }
 
 output "version" {
-  value = local.version
+  value       = local.version
+  description = "The version of the JetBrains IDE."
 }
 
 output "url" {
-  value = coder_app.gateway.url
-}
+  value       = [for key in keys(coder_app.gateway) : coder_app.gateway[key].url]
+  description = "The URLs to connect to the JetBrains IDEs."
+}