#!/usr/bin/env bash
# @file Ensure Terminal Permissions
# @brief Ensures the macOS terminal used for the provisioning process has full disk access permissions
# @description
#     This script ensures the terminal running the provisioning process has full disk access permissions. It also
#     prints information regarding the process of how to enable the permission as well as information related to
#     the specific reasons that the terminal needs full disk access. More specifically, the scripts need full
#     disk access to modify various system files and permissions.
#
#     ## Sources
#
#     * [Detecting Full Disk Access permission on macOS](https://www.dzombak.com/blog/2021/11/macOS-Scripting-How-to-tell-if-the-Terminal-app-has-Full-Disk-Access.html)

{{ includeTemplate "universal/profile-before" }}
{{ includeTemplate "universal/logg-before" }}

# @description Prints information describing why full disk access is required for the script to run on macOS.
printFullDiskAccessNotice() {
    if [ -d /Applications ] && [ -d /System ]; then
        logg md "${XDG_DATA_HOME:-$HOME/.local/share}/chezmoi/docs/terminal/full-disk-access.md"
    fi
}

# @description Ensures the terminal running the provisioning process script has full disk access on macOS. It does this
#     by attempting to read a file that requires full disk access. If it does not, the program opens the preferences
#     pane where the user can grant access so that the script can continue.
ensureFullDiskAccess() {
    if [ -d /Applications ] && [ -d /System ]; then
        if ! plutil -lint /Library/Preferences/com.apple.TimeMachine.plist > /dev/null ; then
            printFullDiskAccessNotice
            logg star 'Opening Full Disk Access preference pane.. Grant full-disk access for the terminal you would like to run the provisioning process with.' && open "x-apple.systempreferences:com.apple.preference.security?Privacy_AllFiles"
            logg info 'You may have to force quit the terminal and have it reload'
            if [ ! -f "$HOME/.zshrc" ] || ! cat "$HOME/.zshrc" | grep '# TEMPORARY FOR INSTALL DOCTOR MACOS' > /dev/null; then
                echo 'bash <(curl -sSL https://install.doctor/start) # TEMPORARY FOR INSTALL DOCTOR MACOS' >> "$HOME/.zshrc"
            fi
            logg prompt 'Press ENTER to check for Full Disk Access again' && read -r
            ensureFullDiskAccess
        else
            logg success 'Current terminal has full disk access'
            if [ -f "$HOME/.zshrc" ]; then
                if command -v gsed > /dev/null; then
                    sudo gsed -i '/# TEMPORARY FOR INSTALL DOCTOR MACOS/d' "$HOME/.zshrc" || logg warn "Failed to remove kickstart script from .zshrc"
                else
                    sudo sed -i '/# TEMPORARY FOR INSTALL DOCTOR MACOS/d' "$HOME/.zshrc" || logg warn "Failed to remove kickstart script from .zshrc"
                fi
            fi
        fi
    fi
}

# @description Applies changes that require input from the user such as using Touch ID on macOS when
#     importing certificates into the system keychain.
#
#     * Ensures CloudFlare Teams certificate is imported into the system keychain
importCloudFlareCert() {
  if [ -d /Applications ] && [ -d /System ] && [ -z "$HEADLESS_INSTALL" ]; then
    ### Acquire certificate
    if [ ! -f "$HOME/.local/etc/ssl/cloudflare/Cloudflare_CA.crt" ]; then
        logg info 'Downloading Cloudflare_CA.crt from https://developers.cloudflare.com/cloudflare-one/static/documentation/connections/Cloudflare_CA.crt to determine if it is already in the System.keychain'
        CRT_TMP="$(mktemp)"
        curl -sSL https://developers.cloudflare.com/cloudflare-one/static/documentation/connections/Cloudflare_CA.crt > "$CRT_TMP"
    else
        CRT_TMP="$HOME/.local/etc/ssl/cloudflare/Cloudflare_CA.crt"
    fi

    ### Validate / import certificate
    security verify-cert -c "$CRT_TMP" > /dev/null 2>&1
    if [ $? != 0 ]; then
        logg info '**macOS Manual Security Permission** Requesting security authorization for Cloudflare trusted certificate'
        sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain "$CRT_TMP" && logg success 'Successfully imported Cloudflare_CA.crt into System.keychain'
    fi

    ### Remove temporary file, if necessary
    if [ ! -f "$HOME/.local/etc/ssl/cloudflare/Cloudflare_CA.crt" ]; then
        rm -f "$CRT_TMP"
    fi
  fi
}

ensureFullDiskAccess
importCloudFlareCert