#!/usr/bin/env bash
#
# scripts/doctor.sh contract (miss path):
#   1. Exits non-zero.
#   2. Each miss is followed by a `fix: ...` line.
#   3. Emits a consolidated "Run the following to fix them" block.
#   4. No raw ANSI escapes leak into non-TTY stderr.

set -euo pipefail

here="$(cd "$(dirname "$0")" && pwd -P)"
repo="$(cd "$here/.." && pwd -P)"

out="$(mktemp)"
trap 'rm -f "$out"' EXIT

# Strip tools from PATH so the miss branches execute.
# /usr/bin/python3 is 3.10.x on Ubuntu 22.04; this exercises the
# python>=3.11 miss branch and its fix+alt lines.
if env -i HOME="$HOME" PATH="/usr/bin:/bin" bash "$repo/scripts/doctor.sh" >"$out" 2>&1; then
    echo "FAIL: doctor.sh exited 0 despite missing prerequisites"
    cat "$out"
    exit 1
fi

fail=0
must_contain() {
    local needle="$1"
    if ! grep -Fq -- "$needle" "$out"; then
        echo "FAIL: expected to see: $needle"
        fail=1
    fi
}

must_contain '[miss] just'
must_contain '[miss] uv'
must_contain '[miss] python>=3.11'
must_contain 'fix: curl --proto "=https" --tlsv1.2 -LsSf https://just.systems/install.sh'
must_contain 'fix: curl -LsSf https://astral.sh/uv/install.sh | sh'
must_contain 'fix: uv python install 3.11'
must_contain 'Run the following to fix them'

# No raw ANSI sequences when stderr is redirected to a file.
if grep -q $'\033\\[' "$out"; then
    echo "FAIL: raw ANSI escape leaked into non-TTY stderr"
    fail=1
fi

# Each [miss] line is followed by a "fix:" line. `[miss]` is 6 chars
# so %-6s adds no padding; the literal " %-12s" supplies one sep space.
awk '
    /^  \[miss\]/  { miss_line = NR; next }
    miss_line && NR == miss_line + 1 {
        if ($0 !~ /^         fix: /) {
            printf "FAIL: [miss] at line %d not followed by fix: (got: %s)\n", miss_line, $0
            exit 1
        }
        miss_line = 0
    }
' "$out" || fail=1

if [ "$fail" -ne 0 ]; then
    echo "---- doctor.sh output ----"
    cat "$out"
    exit 1
fi

echo "PASS: doctor.sh prints fix commands for every miss"