# MCAT Deployment Script for shinyapps.io
# Run this script to deploy your MCAT application

# ==============================================================================
# STEP 1: Install required packages (run once)
# ==============================================================================

install_if_missing <- function(packages) {
  new_packages <- packages[!(packages %in% installed.packages()[, "Package"])]
  if (length(new_packages)) {
    install.packages(new_packages)
  }
}

# Required packages for the app
required_packages <- c(
  "shiny",
  "mirt",
  "mirtCAT",
  "dplyr",
  "ggplot2",
  "rsconnect"
)

install_if_missing(required_packages)

# ==============================================================================
# STEP 2: Configure shinyapps.io account
# ==============================================================================

# You need to get your token and secret from shinyapps.io:
# 1. Go to https://www.shinyapps.io/
# 2. Create a free account (or log in)
# 3. Click on your name (top right) -> Tokens
# 4. Click "Show" next to a token, then "Show Secret"
# 5. Copy the values below

# UNCOMMENT AND FILL IN YOUR CREDENTIALS:
# rsconnect::setAccountInfo(
#   name = "YOUR_ACCOUNT_NAME",
#   token = "YOUR_TOKEN",
#   secret = "YOUR_SECRET"
# )

# ==============================================================================
# STEP 3: Verify files are ready
# ==============================================================================

app_dir <- getwd()  # Should be the MCAT directory

# Check required files exist
required_files <- c("app.R", "Fullmodel.rds")
missing_files <- required_files[!file.exists(file.path(app_dir, required_files))]

if (length(missing_files) > 0) {
  stop("Missing required files: ", paste(missing_files, collapse = ", "),
       "\nMake sure you're in the correct directory and have all files.")
} else {
  message("All required files found!")
}

# ==============================================================================
# STEP 4: Deploy to shinyapps.io
# ==============================================================================

# Deploy the app
# Change "mcat-assessment" to your preferred app name
deploy_app <- function(app_name = "mcat-assessment") {
  library(rsconnect)

  message("Deploying to shinyapps.io...")
  message("This may take a few minutes on first deployment.")

  rsconnect::deployApp(
    appDir = app_dir,
    appName = app_name,
    appTitle = "MCAT - Mental Health Assessment",
    appFiles = c(
      "app.R",
      "Fullmodel.rds"
      # Add "Fulldata.rds" here if needed
    ),
    forceUpdate = TRUE
  )

  message("\nDeployment complete!")
  message(sprintf("Your app is available at: https://%s.shinyapps.io/%s",
                  rsconnect::accounts()$name[1], app_name))
}

# ==============================================================================
# USAGE:
# ==============================================================================
#
# 1. First, configure your shinyapps.io credentials above (Step 2)
#
# 2. Then run:
#    source("deploy.R")
#    deploy_app()
#
# 3. Or deploy with a custom name:
#    deploy_app("my-mcat-app")
#
# ==============================================================================

message("Deployment script loaded!")
message("Configure your shinyapps.io credentials, then run: deploy_app()")