install-rstudio-ubuntu.sh

#!/bin/bash

# RStudio Auto-Installer for Ubuntu
# Downloads and installs the latest RStudio Desktop from the daily builds

set -e

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

echo -e "${GREEN}RStudio Auto-Installer for Ubuntu${NC}"
echo "=================================="

# Get system information
UBUNTU_CODENAME=$(lsb_release -cs)
UBUNTU_VERSION=$(lsb_release -rs)
ARCH=$(dpkg --print-architecture)

echo "Detected Ubuntu: $UBUNTU_VERSION ($UBUNTU_CODENAME)"
echo "Architecture: $ARCH"

# Build platform key directly from codename
PLATFORM_KEY="$UBUNTU_CODENAME-$ARCH"

echo "Using platform key: $PLATFORM_KEY"

# Download the JSON release info
echo "Fetching latest release information..."
JSON_URL="https://dailies.rstudio.com/rstudio/latest/index.json"
JSON_FILE="/tmp/rstudio_releases.json"

if ! curl -s "$JSON_URL" -o "$JSON_FILE"; then
    echo -e "${RED}Error: Failed to download release information${NC}"
    exit 1
fi

# Parse JSON to get download URL and other info
DOWNLOAD_URL=$(jq -r ".products.electron.platforms.\"$PLATFORM_KEY\".link" "$JSON_FILE")
FILENAME=$(jq -r ".products.electron.platforms.\"$PLATFORM_KEY\".filename" "$JSON_FILE")
SHA256=$(jq -r ".products.electron.platforms.\"$PLATFORM_KEY\".sha256" "$JSON_FILE")
VERSION=$(jq -r ".products.electron.platforms.\"$PLATFORM_KEY\".version" "$JSON_FILE")
SIZE=$(jq -r ".products.electron.platforms.\"$PLATFORM_KEY\".size" "$JSON_FILE")

# Check if the platform is supported
if [[ "$DOWNLOAD_URL" == "null" ]]; then
    echo -e "${RED}Error: No RStudio package available for $PLATFORM_KEY${NC}"
    echo "Available Ubuntu platforms:"
    jq -r '.products.electron.platforms | to_entries[] | select(.value.name | contains("Ubuntu")) | .key' "$JSON_FILE"
    exit 1
fi

echo "Found RStudio Desktop $VERSION"
echo "Package size: $(numfmt --to=iec $SIZE)"
echo "Download URL: $DOWNLOAD_URL"

# Download the package
echo "Downloading RStudio package..."
DEB_FILE="/tmp/$FILENAME"

if ! wget -O "$DEB_FILE" "$DOWNLOAD_URL" --progress=bar:force; then
    echo -e "${RED}Error: Failed to download RStudio package${NC}"
    exit 1
fi

# Verify SHA256 checksum
echo "Verifying package integrity..."
DOWNLOADED_SHA256=$(sha256sum "$DEB_FILE" | cut -d' ' -f1)

if [[ "$DOWNLOADED_SHA256" != "$SHA256" ]]; then
    echo -e "${RED}Error: SHA256 checksum mismatch!${NC}"
    echo "Expected: $SHA256"
    echo "Got:      $DOWNLOADED_SHA256"
    exit 1
fi

echo -e "${GREEN}Package integrity verified successfully${NC}"

# Install dependencies (if needed)
echo "Installing dependencies..."
sudo apt update
sudo apt install -y gdebi-core

# Install RStudio
echo "Installing RStudio Desktop..."
if sudo gdebi -n "$DEB_FILE"; then
    echo -e "${GREEN}RStudio Desktop $VERSION installed successfully!${NC}"
else
    echo -e "${RED}Error: Failed to install RStudio${NC}"
    exit 1
fi

# Cleanup
rm -f "$JSON_FILE" "$DEB_FILE"

echo -e "${GREEN}Installation complete! You can now run RStudio from your applications menu or by typing 'rstudio' in the terminal.${NC}"