#!/usr/bin/env bash
# run.sh — build and execute the calendar/ acceptance corpus.
#
# Each examples/<case>.el is a self-contained El program with a fn main()
# that prints a single deterministic result line. The runner compiles each
# via the canonical native elc, links it against the shared C runtime, runs
# it, and asserts the output matches the expected value.

set -uo pipefail
cd "$(dirname "$0")"

EL_HOME="${EL_HOME:-$(cd ../.. && pwd)}"
ELC="${EL_HOME}/dist/platform/elc"
RUNTIME_DIR="${EL_HOME}/el-compiler/runtime"

if [ ! -x "${ELC}" ]; then
    echo "elc not found at ${ELC}" >&2
    exit 1
fi

PASS=0
FAIL=0
FAILED_NAMES=()

# run_runtime_case <name> <source> <expected> [<extra>]
run_runtime_case() {
    local name="$1"
    local src="$2"
    local expected="$3"
    local mode="${4:-exact}"

    local out_c
    local out_bin
    out_c="$(mktemp -t cal_test.XXXXXX).c"
    out_bin="$(mktemp -t cal_test.XXXXXX)"

    if ! "${ELC}" "${src}" > "${out_c}" 2>/tmp/cal_test.elc.err; then
        echo "FAIL  ${name} — elc emit failed:"
        cat /tmp/cal_test.elc.err | sed 's/^/      /'
        FAIL=$((FAIL+1))
        FAILED_NAMES+=("${name}")
        rm -f "${out_c}" "${out_bin}"
        return
    fi

    if ! cc -O2 -I "${RUNTIME_DIR}" "${out_c}" "${RUNTIME_DIR}/el_runtime.c" \
            -lcurl -lssl -lcrypto -lpthread -lm -o "${out_bin}" 2>/tmp/cal_test.cc.err; then
        echo "FAIL  ${name} — cc failed:"
        cat /tmp/cal_test.cc.err | sed 's/^/      /'
        FAIL=$((FAIL+1))
        FAILED_NAMES+=("${name}")
        rm -f "${out_c}" "${out_bin}"
        return
    fi

    local got
    got="$("${out_bin}" 2>&1 | tr -d '[:space:]')"

    if [ "${mode}" = "either" ]; then
        local ok=0
        local IFS=','
        for choice in ${expected}; do
            if [ "${got}" = "${choice}" ]; then ok=1; break; fi
        done
        if [ "${ok}" = "1" ]; then
            echo "PASS  ${name}  (got: ${got})"
            PASS=$((PASS+1))
        else
            echo "FAIL  ${name}  expected one of {${expected}}, got: ${got}"
            FAIL=$((FAIL+1))
            FAILED_NAMES+=("${name}")
        fi
    else
        if [ "${got}" = "${expected}" ]; then
            echo "PASS  ${name}"
            PASS=$((PASS+1))
        else
            echo "FAIL  ${name}  expected: ${expected}, got: ${got}"
            FAIL=$((FAIL+1))
            FAILED_NAMES+=("${name}")
        fi
    fi

    rm -f "${out_c}" "${out_bin}"
}

echo "==> Running calendar/ acceptance corpus"
echo

run_runtime_case "earth-zone"             examples/earth-zone.el             "EDT"
run_runtime_case "dst-spring-forward"     examples/dst-spring-forward.el     "03:30EDT"
run_runtime_case "mars-calendar"          examples/mars-calendar.el          "1"
run_runtime_case "cycle-30hr"             examples/cycle-30hr.el             "0.5"
run_runtime_case "cycle-300yr"            examples/cycle-300yr.el            "0.01"
run_runtime_case "no-cycle"               examples/no-cycle.el               "1"
run_runtime_case "cross-calendar-comparison" examples/cross-calendar-comparison.el "1"
run_runtime_case "local-date-arithmetic"  examples/local-date-arithmetic.el  "2026-6-4"
run_runtime_case "rhythm-grounding"       examples/rhythm-grounding.el       "1778504400"
run_runtime_case "rhythm-cycle-30hr"      examples/rhythm-cycle-30hr.el      "54000"

echo
echo "${PASS} passed, ${FAIL} failed"
if [ "${FAIL}" -gt 0 ]; then
    echo "failed: ${FAILED_NAMES[*]}"
    exit 1
fi
exit 0