#!/usr/bin/env bats

load 'libs/bats-support/load'
load 'libs/bats-assert/load'
load 'helpers/common'

SCRIPT="$REPO_ROOT/zip_images_resize.sh"

setup() {
    setup_mock_env
}

teardown() {
    teardown_mock_env
}

@test "prints usage and exits 1 when no arguments given" {
    run "$SCRIPT"
    assert_failure
    assert_output --partial "Usage:"
}

@test "skips ZIP whose first JPEG already has the processing comment" {
    make_zip "$TEST_WORKDIR/archive.zip" "$FIXTURES/processed.jpg"
    run "$SCRIPT" "$TEST_WORKDIR/archive.zip"
    assert_success
    assert_output --partial "Skipping"
    assert_output --partial "already processed"
}

@test "does not skip ZIP whose JPEG has no processing comment" {
    make_zip "$TEST_WORKDIR/archive.zip" "$FIXTURES/unprocessed.jpg"
    run "$SCRIPT" "$TEST_WORKDIR/archive.zip"
    assert_success
    refute_output --partial "Skipping"
    assert_output --partial "Resized"
}

@test "processed ZIP is unchanged on disk after skip" {
    make_zip "$TEST_WORKDIR/archive.zip" "$FIXTURES/processed.jpg"
    local before_size after_size
    before_size=$(stat -c%s "$TEST_WORKDIR/archive.zip")
    run "$SCRIPT" "$TEST_WORKDIR/archive.zip"
    after_size=$(stat -c%s "$TEST_WORKDIR/archive.zip")
    assert_equal "$before_size" "$after_size"
}

@test "after processing, re-running skips the same ZIP" {
    make_zip "$TEST_WORKDIR/archive.zip" "$FIXTURES/unprocessed.jpg"
    "$SCRIPT" "$TEST_WORKDIR/archive.zip" >/dev/null 2>&1
    run "$SCRIPT" "$TEST_WORKDIR/archive.zip"
    assert_success
    assert_output --partial "Skipping"
}

@test "ZIP with no JPEGs inside is processed without error" {
    echo "not an image" > "$TEST_WORKDIR/readme.txt"
    (cd "$TEST_WORKDIR" && zip -q archive.zip readme.txt)
    run "$SCRIPT" "$TEST_WORKDIR/archive.zip"
    assert_success
    refute_output --partial "Skipping"
    refute_output --partial "Error:"
}

@test "no temp files left in /dev/shm after processing" {
    make_zip "$TEST_WORKDIR/archive.zip" "$FIXTURES/unprocessed.jpg"
    local before after
    before=$(find /dev/shm -maxdepth 1 -name 'tmp.*' | sort)
    run "$SCRIPT" "$TEST_WORKDIR/archive.zip"
    after=$(find /dev/shm -maxdepth 1 -name 'tmp.*' | sort)
    assert_equal "$before" "$after"
}

@test "no temp files left in /dev/shm after skipping" {
    make_zip "$TEST_WORKDIR/archive.zip" "$FIXTURES/processed.jpg"
    local before after
    before=$(find /dev/shm -maxdepth 1 -name 'tmp.*' | sort)
    run "$SCRIPT" "$TEST_WORKDIR/archive.zip"
    after=$(find /dev/shm -maxdepth 1 -name 'tmp.*' | sort)
    assert_equal "$before" "$after"
}

@test "processes multiple ZIPs, skipping already-processed ones" {
    make_zip "$TEST_WORKDIR/done.zip"    "$FIXTURES/processed.jpg"
    make_zip "$TEST_WORKDIR/todo.zip"    "$FIXTURES/unprocessed.jpg"
    run "$SCRIPT" "$TEST_WORKDIR/done.zip" "$TEST_WORKDIR/todo.zip"
    assert_success
    assert_output --partial "Skipping"
    assert_output --partial "Resized"
}