#!/usr/bin/env bash
#
# devel-setup.sh — one-time developer environment setup for mtgc.
#
# Installs the Tauri v2 Linux system libraries and the Tauri CLI, and verifies
# the toolchain (Rust, Node, pkg-config libs) needed to build the desktop shell.
#
# Safe to re-run: package installs are idempotent and the CLI install is skipped
# if already present.
#
# Usage:
#   ./scripts/devel-setup.sh
#
set -euo pipefail

info() { printf '\033[1;34m==>\033[0m %s\n' "$*"; }
warn() { printf '\033[1;33m[warn]\033[0m %s\n' "$*"; }
err()  { printf '\033[1;31m[err]\033[0m %s\n' "$*" >&2; }

# --- 1. Prerequisites already expected on the machine ----------------------

if ! command -v rustc >/dev/null 2>&1; then
    err "Rust not found. Install from https://rustup.rs and re-run."
    exit 1
fi
info "Rust: $(rustc --version)"

if ! command -v node >/dev/null 2>&1; then
    warn "Node.js not found — needed for the Vite/React frontend."
    warn "Install Node 18+ (e.g. 'sudo dnf install nodejs') before running the app."
else
    info "Node: $(node --version)"
fi

# --- 2. Tauri v2 system libraries (Fedora / dnf) ---------------------------
#
# These are GTK3 packages by necessity, not choice: Tauri v2's Linux backend
# (wry/tao) hard-depends on GTK3 + webkit2gtk-4.1. GTK4 support is tracked
# upstream but unmerged with no ETA — see the README's "Why GTK3, not GTK4?"
# note (tauri#7335, tao#1104, wry#1228) before "fixing" this in isolation.

FEDORA_PKGS=(
    webkit2gtk4.1-devel
    gtk3-devel
    libappindicator-gtk3-devel
    librsvg2-devel
    file
    openssl-devel
)

if command -v dnf >/dev/null 2>&1; then
    info "Installing Tauri system libraries via dnf (sudo required)…"
    sudo dnf install -y "${FEDORA_PKGS[@]}"
else
    warn "dnf not found — this script targets Fedora."
    warn "Install the equivalents of: ${FEDORA_PKGS[*]}"
    warn "See https://tauri.app/start/prerequisites/ for your distro."
fi

# --- 3. Verify the libraries pkg-config will look for ----------------------

check_pkg() {
    if pkg-config --exists "$1" 2>/dev/null; then
        info "found $1"
    else
        warn "missing $1 (Tauri build may fail)"
    fi
}
if command -v pkg-config >/dev/null 2>&1; then
    check_pkg webkit2gtk-4.1
    check_pkg gtk+-3.0
else
    warn "pkg-config not found; cannot verify libraries."
fi

# --- 4. Tauri v2 CLI -------------------------------------------------------

if cargo tauri --version >/dev/null 2>&1; then
    info "Tauri CLI: $(cargo tauri --version 2>&1 | head -1)"
else
    info "Installing Tauri v2 CLI (cargo install tauri-cli --version '^2')…"
    cargo install tauri-cli --version '^2'
fi

info "Setup complete. Next: scaffold + run the desktop shell with 'cargo tauri dev'."