#!/usr/bin/env bash
# Run all quality gates for sm121-launcher (see AGENTS.md and Makefile):
#
#   1. cargo fmt --check          (formatting)
#   2. cargo clippy --all-targets -- -D warnings   (lints, warnings-as-errors)
#   3. cargo test                 (unit tests)
#   4. file-size check            (no src/**/*.rs > 500 lines)
#
# Fails fast on the first failed gate so devs see one problem at a time.
# Wire into CI by running `./scripts/check.sh`; locally use `make check`.

set -euo pipefail

cd "$(dirname "$0")/.."

# Color output if stderr is a tty.
if [ -t 2 ]; then
    RED=$'\033[31m'; GREEN=$'\033[32m'; YELLOW=$'\033[33m'; RESET=$'\033[0m'
else
    RED=""; GREEN=""; YELLOW=""; RESET=""
fi

step() { printf '%s==> %s%s\n' "$YELLOW" "$*" "$RESET" >&2; }
ok()   { printf '%s  ✓ %s%s\n' "$GREEN"  "$*" "$RESET" >&2; }
die()  { printf '%s  ✗ %s%s\n' "$RED"    "$*" "$RESET" >&2; exit 1; }

# 1. Formatting
step "cargo fmt --check"
if cargo fmt --check; then
    ok "fmt"
else
    die "cargo fmt --check failed — run 'cargo fmt' or 'make fmt' to fix"
fi

# 2. Lints (treat warnings as errors)
step "cargo clippy --all-targets -- -D warnings"
if cargo clippy --all-targets -- -D warnings; then
    ok "clippy"
else
    die "cargo clippy failed"
fi

# 3. Tests
step "cargo test"
if cargo test; then
    ok "test"
else
    die "cargo test failed"
fi

# 4. File size (AGENTS.md: no src file >500 lines)
step "src/**/*.rs ≤ 500 lines"
max=500
exit_code=0
while IFS= read -r f; do
    [ -f "$f" ] || continue
    lines=$(wc -l < "$f")
    if [ "$lines" -gt "$max" ]; then
        printf '%s  ✗ %s has %s lines (max %s)%s\n' "$RED" "$f" "$lines" "$max" "$RESET" >&2
        exit_code=1
    fi
done < <(find src -type f -name '*.rs')
if [ "$exit_code" -eq 0 ]; then
    ok "lines"
else
    exit 1
fi

echo
printf '%sAll gates passed.%s\n' "$GREEN" "$RESET"