#!/usr/bin/env bash
# Doublures strictes : aucune mutation ou lecture hors des fixtures /mnt.
set -euo pipefail
name="${0##*/}"
printf '%s' "$name" >> /mnt/calls
printf ' %q' "$@" >> /mnt/calls
printf '\n' >> /mnt/calls

if [[ "$name" == git ]]; then
    [[ "$1" == -C && "$2" == /mnt/repo && "$3" == rev-parse && "$4" == HEAD && $# == 4 ]] ||
        { [[ "${SIM_LEGACY:-0}" == 1 && "$1" == -C && "$2" == /mnt/repo && "$3" == status ]] || exit 90; }
    [[ "$3" == status ]] || printf '074d5dd0b2a1b362c8c0cd6413ab77f868461e25\n'
    exit 0
fi
if [[ "$name" == sha256sum ]]; then
    [[ $# == 0 ]] || exit 90
    case "${SIM_HASH_MODE:-}" in
        fail) exit 47 ;;
        malformed) printf 'malformed  -\n'; exit 0 ;;
        '') exec /usr/bin/sha256sum ;;
        *) exit 90 ;;
    esac
fi
if [[ "$name" == mv ]]; then
    if [[ "${1:-}" == -T ]]; then
        [[ "$2" == -n && "$3" == -- && "$4" == /mnt/*/.incomplete.* && "$5" == /mnt/*/export-* ]] || exit 90
        if [[ "${SIM_FINAL_COLLIDE:-0}" == 1 ]]; then
            /usr/bin/mkdir -m 0700 -- "$5"
            printf 'existing candidate\n' > "$5/keep"
        fi
        if [[ -n "${SIM_FINAL_SIGNAL_PHASE:-}" ]]; then
            signal="${SIM_FINAL_SIGNAL:-TERM}"
            [[ "$signal" == INT || "$signal" == TERM ]] || exit 90
            [[ "$SIM_FINAL_SIGNAL_PHASE" == before || "$SIM_FINAL_SIGNAL_PHASE" == after ]] || exit 90
            if [[ "$SIM_FINAL_SIGNAL_PHASE" == after ]]; then /usr/bin/mv "$@" || exit 91; fi
            kill "-$signal" "$PPID"
            [[ "$signal" == INT ]] && exit 130 || exit 143
        fi
        [[ "${SIM_FINAL_FAIL:-0}" != 1 ]] || exit 55
    fi
    exec /usr/bin/mv "$@"
fi
if [[ "$name" == sudo ]]; then
    if [[ "${SIM_LEGACY:-0}" == 1 ]]; then
        case "${1:-}" in
            test)
                [[ "$2" == -f && ( "$3" == /etc/* || "$3" == /boot/limine.conf || "$3" == /usr/local/sbin/* ) ]] || exit 90
                [[ -f "$3" ]] ; exit ;;
            install)
                [[ "$2" == -D && "$3" == -o && "$5" == -g && "$7" == -m ]] || exit 90
                [[ "$9" == /etc/* || "$9" == /usr/local/sbin/* ]] || exit 90
                [[ "${10}" == /mnt/repo/* ]] || exit 90
                /usr/bin/install -D -m "$8" "$9" "${10}"; exit ;;
            awk)
                [[ "${@: -1}" == /boot/limine.conf ]] || exit 90
                exec /usr/bin/awk "${@:2}" ;;
        esac
    fi
    [[ "${1:-}" == -n ]] || exit 90
    shift
    case "${1:-}" in
        /usr/bin/bash)
            [[ $# == 5 && "$2" == -c && "$4" == -- ]] || exit 90
            digest="$(printf '%s' "$3" | /usr/bin/sha256sum)"
            [[ "${digest%% *}" == 9fc82ae6938b308c551562c1106372ba19194e90651a107cf819d3744ede8e4d ]] || exit 90
            target="$5"
            [[ "$target" == /etc/* || "$target" == /boot/limine.conf || "$target" == /usr/local/sbin/* ]] || exit 90
            if [[ "${SIM_INSPECT_TARGET:-}" == "$target" ]]; then
                case "${SIM_INSPECT_MODE:-}" in
                    fail) exit 1 ;;
                    parent_fail) exit 3 ;;
                    empty) exit 0 ;;
                    unknown) printf 'UNKNOWN\n'; exit 0 ;;
                    valid_fail) printf 'EXISTING\n'; exit 1 ;;
                esac
            fi
            parent="${target%/*}"
            while [[ "$parent" != / ]]; do
                if [[ -L "$parent" ]]; then printf 'LINK\n'; exit 0; fi
                if [[ ! -e "$parent" ]]; then printf 'ABSENT\n'; exit 0; fi
                if [[ ! -d "$parent" ]]; then printf 'INVALID\n'; exit 0; fi
                parent="${parent%/*}"; [[ -n "$parent" ]] || parent=/
            done
            if [[ -L "$target" ]]; then printf 'LINK\n'
            elif [[ -f "$target" ]]; then printf 'EXISTING\n'
            elif [[ -e "$target" ]]; then printf 'INVALID\n'
            else printf 'ABSENT\n'; fi
            exit 0 ;;
        /usr/bin/cat)
            [[ $# == 3 && "$2" == -- ]] || exit 90
            path="$3"
            [[ "$path" == /etc/fstab || "$path" == /etc/pacman.conf ||
               "$path" == /etc/makepkg.conf || "$path" == /etc/mkinitcpio.conf ||
               "$path" == /etc/nftables.conf || "$path" == /etc/limine-snapper-sync.conf ||
               "$path" == /etc/tlp.d/10-archasp.conf ||
               "$path" == /etc/systemd/zram-generator.conf ||
               "$path" == /etc/snapper/configs/root ||
               "$path" == /usr/local/sbin/batlimit-set ||
               "$path" == /usr/local/sbin/vmware-stack ||
               "$path" == /boot/limine.conf ]] || exit 90
            if [[ "${SIM_FAIL_KEY:-}" == "read:$path" ]]; then printf 'partial\n'; exit 47; fi
            exec /usr/bin/cat -- "$path" ;;
        /usr/bin/btrfs)
            [[ "$2" == subvolume && "$3" == list && "$4" == / ||
               "$2" == filesystem && "$3" == usage && "$4" == / ||
               "$2" == scrub && "$3" == status && "$4" == / ]] || exit 90
            key="btrfs_${2}_${3}"
            if [[ "${SIM_SIGNAL_KEY:-}" == "$key" ]]; then kill "-${SIM_SIGNAL:-TERM}" "$PPID"; exit 143; fi
            if [[ "${SIM_FAIL_KEY:-}" == "$key" ]]; then printf 'partial\n'; exit 47; fi
            printf 'fixture %s\n' "$key"; exit 0 ;;
        /usr/bin/nvme)
            [[ "$2" == smart-log && "$3" == /dev/nvme0 ]] || exit 90
            printf 'fixture nvme0\n'; exit 0 ;;
    esac
    exit 90
fi

case "$name" in
    pacman)
        [[ $# == 1 ]] || exit 90
        case "$1" in
            -Qqen) key=pacman_native; value=alpha ;;
            -Qqem) key=pacman_foreign; value=foreign ;;
            -Qdtq) key=pacman_orphans; value=orphan ;;
            *) exit 90 ;;
        esac ;;
    systemctl)
        if [[ "$*" == *--user* ]]; then key=user_state
        else key=system_state; fi
        value='fixture.service enabled' ;;
    lsblk)
        [[ "$1" == -e7 && "$2" == -o ]] || exit 90
        key=lsblk; value='disk fixture' ;;
    findmnt) [[ $# == 0 ]] || exit 90; key=findmnt; value='fixture mount' ;;
    free) [[ "$1" == -h ]] || exit 90; key=memory; value='fixture memory' ;;
    swapon) [[ "$1" == --show ]] || exit 90; key=swap; value='fixture swap' ;;
    *) exit 90 ;;
esac
if [[ "$key" == pacman_orphans && "${SIM_ORPHANS_EMPTY_ERROR:-0}" == 1 ]]; then exit 1; fi
if [[ "${SIM_FAIL_KEY:-}" == "$key" ]]; then printf 'partial\n'; exit 47; fi
if [[ "${SIM_EMPTY_KEY:-}" == "$key" ]]; then exit 0; fi
if [[ "${SIM_SIGNAL_KEY:-}" == "$key" ]]; then kill "-${SIM_SIGNAL:-TERM}" "$PPID"; exit 143; fi
printf '%s\n' "$value"