terraform {
	required_providers {
		coder = {
			source  = "coder/coder"
			version = "0.5.3"
		}
		docker = {
			source  = "kreuzwerker/docker"
			version = "~> 2.20.2"
		}
	}
}

data "coder_provisioner" "me" {
}

provider "docker" {
}

data "coder_workspace" "me" {
}

locals {
	dcw_owner = replace(replace("${data.coder_workspace.me.owner}", "~", "~~"), "-", "~-")
	dcw_name = replace(replace("${data.coder_workspace.me.name}", "~", "~~"), "-", "~-")

	##workspace_name = "${data.coder_workspace.me.owner}-${data.coder_workspace.me.name}"
	workspace_name = "${local.dcw_owner}-${local.dcw_name}"

	## this points to the workspace parent directory accessible from the docker host.
	workspace_dir = "/home/gfs-data/coder/workspace/${local.workspace_name}"

	## this indicates the view of workspace_dir from within the coder server container.
	## the binding mount directory in coder.yml must match the leading directory in this item.
	server_workspace_dir =  "/workspace/${local.workspace_name}"
}

resource "null_resource" "workspace" {
	count = 1

	triggers = {
		dir = local.server_workspace_dir
	}

	provisioner "local-exec" {
		command = "mkdir ${self.triggers.dir}"
	}

	provisioner "local-exec" {
		when = destroy
		command = "rm -rf ${self.triggers.dir}"
	}
}

resource "coder_agent" "main" {
	arch           = data.coder_provisioner.me.arch
	os             = "linux"
	startup_script = "code-server --auth none"

	# These environment variables allow you to make Git commits right away after creating a
	# workspace. Note that they take precedence over configuration defined in ~/.gitconfig!
	# You can remove this block if you'd prefer to configure Git manually or using
	# dotfiles. (see docs/dotfiles.md)
	env = {
		GIT_AUTHOR_NAME     = "${data.coder_workspace.me.owner}"
		GIT_COMMITTER_NAME  = "${data.coder_workspace.me.owner}"
		GIT_AUTHOR_EMAIL    = "${data.coder_workspace.me.owner_email}"
		GIT_COMMITTER_EMAIL = "${data.coder_workspace.me.owner_email}"
	}
}

resource "coder_app" "code-server" {
	agent_id  = coder_agent.main.id
	name      = "code-server"
	url       = "http://localhost:8080/?folder=/home/coder"
	icon      = "/icon/code.svg"
	subdomain = false
	share     = "owner"

	healthcheck {
		url       = "http://localhost:8080/healthz"
		interval  = 3
		threshold = 10
	}
}

##resource "docker_volume" "home_volume" {
##	name = "coder-${data.coder_workspace.me.owner}-${data.coder_workspace.me.name}-root"
##}

resource "docker_service" "workspace" {
	##depends_on = [local_file.workspace]
	depends_on = [null_resource.workspace]

	count = data.coder_workspace.me.start_count
	name = "coder-${data.coder_workspace.me.owner}-${lower(data.coder_workspace.me.name)}"

	task_spec {
		container_spec {
			image = "codercom/code-server:4.8.3"
			hostname = lower(data.coder_workspace.me.name)
			command = ["sh"]
			##args =  ["-c", replace(coder_agent.main.init_script, "/localhost|127\\.0\\.0\\.1/", "host.docker.internal")]
			args =  ["-c", replace(coder_agent.main.init_script, "/localhost|127\\.0\\.0\\.1/", "coder-service-host") ]

			env = {
				CODER_AGENT_TOKEN = "${coder_agent.main.token}"
			}
			#hosts {
			#  host = "host.docker.internal"
			#  ip   = "host-gateway"
			#}

			mounts {
				target = "/home/coder"
				source = local.workspace_dir
				type = "bind"
				read_only = false
			}

			##dir = "/home/coder"
			##user = "root"
		}
   
		resources {
			limits {
				memory_bytes = 1000000000
			}
		}
		#placement {
		#  constraints = [
		#    "node.role == manager"  
		#  ]
		#}

		force_update = 0
		networks = ["coder-network"]
	}

	mode {
		replicated {
			replicas = 1
		}
	}
}