terraform {
  required_providers {
    coder = {
      source = "coder/coder"
    }
  }
}

locals {
  username = data.coder_workspace_owner.me.name
  user_id  = data.coder_workspace_owner.me.id
}

data "coder_provisioner" "me" {}
data "coder_workspace" "me" {}
data "coder_workspace_owner" "me" {}

variable "github_token" {
  description = "GitHub token for Copilot (optional)"
  type        = string
  sensitive   = true
  default     = ""
}

resource "coder_agent" "main" {
  arch = data.coder_provisioner.me.arch
  os   = "linux"

  startup_script = <<-EOT
    #!/bin/bash
    set +e
    
    # 初始化使用者目錄
    if [ ! -f ~/.init_done ]; then
      cp -rT /etc/skel ~ 2>/dev/null || true
      touch ~/.init_done
    fi
    mkdir -p ~/.config ~/.cache ~/.local/share
    
    # 確保 code-server 運行中
    # codercom/enterprise-base 已預裝 code-server
    # Coder agent 會自動管理 code-server 進程
  EOT

  env = {
    GIT_AUTHOR_NAME     = coalesce(data.coder_workspace_owner.me.full_name, data.coder_workspace_owner.me.name)
    GIT_AUTHOR_EMAIL    = data.coder_workspace_owner.me.email
    GIT_COMMITTER_NAME  = coalesce(data.coder_workspace_owner.me.full_name, data.coder_workspace_owner.me.name)
    GIT_COMMITTER_EMAIL = data.coder_workspace_owner.me.email
    GITHUB_TOKEN        = var.github_token != "" ? var.github_token : ""
  }

  metadata {
    display_name = "CPU Usage"
    key          = "0_cpu_usage"
    script       = "coder stat cpu"
    interval     = 10
    timeout      = 1
  }

  metadata {
    display_name = "RAM Usage"
    key          = "1_ram_usage"
    script       = "coder stat mem"
    interval     = 10
    timeout      = 1
  }

  metadata {
    display_name = "Home Disk"
    key          = "3_home_disk"
    script       = "coder stat disk --path $${HOME}"
    interval     = 60
    timeout      = 1
  }

  metadata {
    display_name = "CPU Usage (Host)"
    key          = "4_cpu_usage_host"
    script       = "coder stat cpu --host"
    interval     = 10
    timeout      = 1
  }

  metadata {
    display_name = "Memory Usage (Host)"
    key          = "5_mem_usage_host"
    script       = "coder stat mem --host"
    interval     = 10
    timeout      = 1
  }

  metadata {
    display_name = "Load Average (Host)"
    key          = "6_load_host"
    script = "echo \"$$(cat /proc/loadavg | awk '{ print $$1 }') $$(nproc)\" | awk '{ printf \"%0.2f\", $$1/$$2 }'"
    interval = 60
    timeout  = 1
  }

  metadata {
    display_name = "Swap Usage (Host)"
    key          = "7_swap_host"
    script = "free -b | awk '/^Swap/ { printf(\"%.1f/%.1f\", $$3/1024.0/1024.0/1024.0, $$2/1024.0/1024.0/1024.0) }'"
    interval = 10
    timeout  = 1
  }
}

# code-server 應用配置
resource "coder_app" "code_server" {
  count             = data.coder_workspace.me.start_count
  agent_id          = coder_agent.main.id
  slug              = "code-server"
  display_name      = "code-server"
  icon              = "/icon/code.svg"
  url               = "http://localhost:13337"
  subdomain         = false
  share             = "owner"
  
  healthcheck {
    url       = "http://localhost:13337/health"
    interval  = 3
    threshold = 10
  }
}

# JetBrains IDE 支援（可選）
resource "coder_app" "jetbrains" {
  count   = data.coder_workspace.me.start_count
  agent_id = coder_agent.main.id
  slug     = "jetbrains"
  display_name = "JetBrains Toolbox"
  icon     = "/icon/jetbrains.svg"
  url      = "http://localhost:5037"
  subdomain = false
  share    = "owner"
}