# ---------------------------------------------------------------------------------
# Hosts
# ---------------------------------------------------------------------------------
# One entry per VPS. The same module is instantiated for each (see main.tf's
# for_each). This config manages TWO hosts: prod (new 48 GB / 12-core VPS, branch
# `release`, thermograph.org) and beta (the old VPS 75.119.132.91, branch `main`,
# no public domain by default). The `dev` branch deploys to the LAN dev server via
# deploy/deploy-dev.sh (a self-hosted runner) and is NOT managed here.
#
# A host with `domain = ""` gets no Caddy/TLS: the app port is opened on the firewall
# and the app is reached directly (beta does this by default; set a domain to front
# it with Caddy TLS).
#
# Resource sizing (workers / app_cpus / db_cpus / db_memory) defaults to the historical
# 4 / 4 / 2 / 8g budget (right for beta). The prod box is 48 GB / 12 cores — raise these
# there (the example uses app_cpus 8, db_cpus 4, db_memory "16g"). The Postgres internal
# budget scales from db_memory automatically (deploy/db/init/20-tuning.sh), so no
# separate tuning edit is needed to exploit the RAM.
variable "hosts" {
  description = "Map of hosts to manage, keyed by a short name (e.g. \"prod\", \"dev\")."
  type = map(object({
    host                 = string                     # IP or hostname to SSH to
    ssh_user             = optional(string, "deploy") # SSH login user
    ssh_private_key_path = string                     # path to the private key for that user
    role                 = string                     # "prod" | "dev" (informational + outputs)
    git_branch           = string                     # branch the checkout is reset to
    domain               = optional(string, "")       # public domain; "" => no Caddy/TLS
    compose_files        = optional(list(string), ["docker-compose.yml"])
    app_dir              = optional(string, "/opt/thermograph") # checkout path on the host
    workers              = optional(number, 4)                  # uvicorn workers (WORKERS)
    app_cpus             = optional(number, 4)                  # app container CPU cap (APP_CPUS)
    db_cpus              = optional(number, 2)                  # db container CPU cap (DB_CPUS)
    db_memory            = optional(string, "8g")               # db container memory cap (DB_MEMORY)
    # Self-host the ERA5 archive (docker-compose.openmeteo.yml + a host rclone mount
    # of the object-storage bucket). Only the self-hosting host (prod) sets true.
    openmeteo   = optional(bool, false)
    om_data_dir = optional(string, "/mnt/om-archive") # host rclone mount point (OM_DATA_DIR)
  }))
}

variable "repo_url" {
  description = "Git remote to clone from when a host has no checkout yet (a fresh prod box)."
  type        = string
  default     = "https://github.com/griffemi/thermograph.git"
}

variable "app_port" {
  description = "Port the app binds inside the container / is health-checked on."
  type        = number
  default     = 8137
}

# ---------------------------------------------------------------------------------
# Self-hosted Open-Meteo (object storage) — consumed only by hosts with openmeteo=true
# ---------------------------------------------------------------------------------
# The ERA5 .om archive lives in an object-storage bucket, surfaced on the host by an
# rclone FUSE mount at each host's om_data_dir. These describe that bucket + mount.
# om_rclone_conf holds credentials, so it's sensitive and lands in state — keep the
# real value in terraform.tfvars (gitignored), never committed.
variable "om_bucket_remote" {
  description = "rclone remote:path for the archive bucket, e.g. \"om-archive:thermograph-era5\" (matches a [remote] in om_rclone_conf)."
  type        = string
  default     = ""
}

variable "om_rclone_conf" {
  description = "Full rclone.conf contents defining the archive remote (installed to /etc/rclone/rclone.conf, 0600). Sensitive."
  type        = string
  default     = ""
  sensitive   = true
}

variable "om_vfs_cache_max" {
  description = "rclone --vfs-cache-max-size: bounds the on-disk hot cache for the mount (keep within the disk budget)."
  type        = string
  default     = "80G"
}

# ---------------------------------------------------------------------------------
# Shared secrets (rendered into /etc/thermograph.env on every host)
# ---------------------------------------------------------------------------------
# These live in terraform.tfvars (gitignored) and land in local state — never commit
# real values. Every host in this config shares the same secret set; split the config
# if prod and dev must diverge on a credential.
variable "postgres_password" {
  description = "PostgreSQL password (initializes the db container AND builds THERMOGRAPH_DATABASE_URL)."
  type        = string
  sensitive   = true
}

variable "auth_secret" {
  description = "THERMOGRAPH_AUTH_SECRET — signs email-confirm / password-reset tokens. Pin it."
  type        = string
  sensitive   = true
}

variable "vapid_private_key" {
  description = "THERMOGRAPH_VAPID_PRIVATE_KEY — signs Web Push. Pin it or existing subscriptions break."
  type        = string
  sensitive   = true
}

variable "vapid_public_key" {
  description = "THERMOGRAPH_VAPID_PUBLIC_KEY — public half of the VAPID pair."
  type        = string
  sensitive   = true
}

variable "vapid_contact" {
  description = "THERMOGRAPH_VAPID_CONTACT — mailto: or https URL sent to push services."
  type        = string
  sensitive   = true
  default     = ""
}

# ---- Optional: search-engine verification -------------------------------------
variable "google_verify" {
  description = "THERMOGRAPH_GOOGLE_VERIFY — Search Console HTML-tag content value."
  type        = string
  sensitive   = true
  default     = ""
}

variable "bing_verify" {
  description = "THERMOGRAPH_BING_VERIFY — Bing Webmaster msvalidate.01 content value."
  type        = string
  sensitive   = true
  default     = ""
}

# ---- Optional: outbound email (SMTP) ------------------------------------------
variable "mail_backend" {
  description = "THERMOGRAPH_MAIL_BACKEND — console | smtp | disabled. Empty => unset (console default)."
  type        = string
  default     = ""
}

variable "smtp_host" {
  description = "THERMOGRAPH_SMTP_HOST (usually 127.0.0.1 for the local Postfix null client)."
  type        = string
  default     = ""
}

variable "smtp_port" {
  description = "THERMOGRAPH_SMTP_PORT."
  type        = string
  default     = ""
}

variable "smtp_user" {
  description = "THERMOGRAPH_SMTP_USER (only for a remote relay)."
  type        = string
  sensitive   = true
  default     = ""
}

variable "smtp_password" {
  description = "THERMOGRAPH_SMTP_PASSWORD (only for a remote relay)."
  type        = string
  sensitive   = true
  default     = ""
}

variable "smtp_starttls" {
  description = "THERMOGRAPH_SMTP_STARTTLS — \"1\" to enable. Empty => unset."
  type        = string
  default     = ""
}

variable "mail_from" {
  description = "THERMOGRAPH_MAIL_FROM — From: header, e.g. \"Thermograph <no-reply@thermograph.org>\"."
  type        = string
  default     = ""
}

variable "mail_reply_to" {
  description = "THERMOGRAPH_MAIL_REPLY_TO."
  type        = string
  default     = ""
}

# ---- Optional: Discord --------------------------------------------------------
variable "discord_webhook" {
  description = "THERMOGRAPH_DISCORD_WEBHOOK — the URL IS the credential."
  type        = string
  sensitive   = true
  default     = ""
}

variable "discord_public_key" {
  description = "THERMOGRAPH_DISCORD_PUBLIC_KEY — verifies interaction requests."
  type        = string
  default     = ""
}

variable "discord_app_id" {
  description = "THERMOGRAPH_DISCORD_APP_ID."
  type        = string
  default     = ""
}

variable "discord_bot_token" {
  description = "THERMOGRAPH_DISCORD_BOT_TOKEN — a credential (command registration only)."
  type        = string
  sensitive   = true
  default     = ""
}

variable "discord_client_secret" {
  description = "THERMOGRAPH_DISCORD_CLIENT_SECRET — OAuth2 account linking (a credential)."
  type        = string
  sensitive   = true
  default     = ""
}