const test = require('node:test');
const assert = require('node:assert/strict');

// #443 D152: the Prompt library's Delete… review (delete unpaired, archive paired, keep protected) and Restore.
const source = import('../../web/js/workspace/library-delete.mjs');

const preview = (patch = {}) => ({success: true, library_epoch: 'e', delete: [], archive: [], protected: [],
    already_archived: 0, not_found: 0, image_links: 0, backup: 'on', disk: null, ...patch});

test('the routes are the workspace ones, never the legacy bulk delete', async () => {
    const {PREVIEW_URL, DELETE_URL, RESTORE_URL} = await source;
    assert.equal(PREVIEW_URL, '/prompt_manager/library/delete/preview');
    assert.equal(DELETE_URL, '/prompt_manager/library/delete');
    assert.equal(RESTORE_URL, '/prompt_manager/library/restore');
});

test('the title, primary and body follow what the review will do', async () => {
    const {reviewOf, reviewTitle, primaryLabel, deleteBody} = await source;
    const both = reviewOf(preview({delete: [1, 2], archive: [3]}));
    assert.equal(reviewTitle(both), 'Delete or archive selected prompts');
    assert.equal(primaryLabel(both), 'Delete 2 and archive 1 prompt');
    assert.deepEqual(deleteBody(both), {archive_ids: [3], delete_ids: [1, 2], expected_epoch: 'e', backup: 'on'});
    const onlyDelete = reviewOf(preview({delete: [1]}));
    assert.equal(reviewTitle(onlyDelete), 'Delete selected prompts');
    assert.equal(primaryLabel(onlyDelete), 'Delete 1 prompt');
    const onlyArchive = reviewOf(preview({archive: [4, 5]}));
    assert.equal(reviewTitle(onlyArchive), 'Archive selected prompts');
    assert.equal(primaryLabel(onlyArchive), 'Archive 2 prompts');
});

test('the grid shows each row only when it applies, with protected titles in selection order', async () => {
    const {reviewOf, reviewGrid} = await source;
    const names = {7: 'Seven', 8: 'Eight', 9: 'Nine', 10: 'Ten'};
    const review = reviewOf(preview({delete: [1], archive: [2], protected: [7, 8, 9, 10], already_archived: 1,
        not_found: 2, image_links: 3}));
    assert.deepEqual(reviewGrid(review, id => names[id]), [
        ['Delete permanently', '1 prompt not in a saved pair'],
        ['Archive', '1 prompt in a saved pair: hidden, restorable'],
        ['Protected (kept)', '4: Seven, Eight, Nine and 1 more'],
        ['Already archived', '1'],
        ['No longer exist', '2'],
        ['Image links removed', '3 images will no longer show these prompts (files stay on disk)'],
        ['Backup', 'Create and verify before deleting'],
    ]);
    // #512: a row with nothing in it is left out.
    const archiveOnly = reviewOf(preview({archive: [2]}));
    assert.deepEqual(reviewGrid(archiveOnly).map(([term]) => term), ['Archive']);
    const deleteOnly = reviewOf(preview({delete: [1]}));
    assert.deepEqual(reviewGrid(deleteOnly).map(([term]) => term), ['Delete permanently', 'Image links removed', 'Backup']);
    const keptOnly = reviewOf(preview({protected: [7]}));
    assert.deepEqual(reviewGrid(keptOnly, id => names[id]), [['Protected (kept)', '1: Seven']]);
    const off = reviewOf(preview({delete: [1], backup: 'off'}));
    assert.equal(reviewGrid(off).at(-1)[1], 'Off: no safety backup (System › Backup & export › Recovery policy)');
});

test('the Archive row names the saved pair, never negative variants, for one or many prompts', async () => {
    const {reviewOf, reviewGrid} = await source;
    // A saved-pair prompt with 0 negative variants (live prompt 7901) is archive-only for its pair, not for variants.
    const one = reviewGrid(reviewOf(preview({archive: [2]}))).find(([term]) => term === 'Archive');
    assert.deepEqual(one, ['Archive', '1 prompt in a saved pair: hidden, restorable']);
    const many = reviewGrid(reviewOf(preview({archive: [2, 3, 4]}))).find(([term]) => term === 'Archive');
    assert.deepEqual(many, ['Archive', '3 prompts in a saved pair: hidden, restorable']);
    for (const [, value] of [one, many]) assert.doesNotMatch(value, /variant/);
});

test('the sentences explain archive, irreversibility per backup policy, re-creation and protection', async () => {
    const {reviewOf, reviewSentences} = await source;
    const [archive, remove, guarded] = reviewSentences(reviewOf(preview({delete: [1], archive: [2], protected: [3]})));
    // Live test (#470): the archive reason is the saved pair, which a prompt with 0 negative variants has too.
    assert.match(archive, /^Prompts in a saved pair, as its positive or its negative, are archived instead of deleted, so the pair and its runs stay intact\./);
    assert.doesNotMatch(archive, /variant/);
    // #492: the archived shelf deletes them too.
    assert.match(archive, /stay intact\. To delete them later or bring them back, press Show archived prompts, select them and press Delete… or Restore\.$/);
    assert.match(remove, /the only way back is to restore the safety backup taken first \(System › Backup & export\), which returns the whole library to that moment\. It is kept among the last 10 safety backups\./);
    assert.match(remove, /A later scan, a new image or a node run with the same text adds it again as a new prompt\.$/);
    assert.equal(guarded, 'Protected prompts are tagged __protected__; remove the tag to delete them.');
    const [off] = reviewSentences(reviewOf(preview({delete: [1], backup: 'off'})));
    assert.match(off, /Deleted prompts cannot be brought back\. Image files/);
    assert.doesNotMatch(off, /safety backup/);
});

test('a review that cannot start says why: nothing to change, or no room for the backup', async () => {
    const {reviewOf, blockedReason, COPY} = await source;
    assert.equal(blockedReason(reviewOf(preview({protected: [1]}))), COPY.none);
    assert.equal(blockedReason(reviewOf(preview({delete: [1], disk: {sufficient: false, message: 'Not enough. Nothing was changed.'}}))),
        'Not enough. Nothing was changed.');
    assert.match(blockedReason(reviewOf(preview({delete: [1], disk: {sufficient: false}}))), /not enough free space/);
    assert.equal(blockedReason(reviewOf(preview({delete: [1], disk: {sufficient: true}}))), null);
    assert.equal(blockedReason(reviewOf(preview({archive: [1]}))), null);
});

test('a delete outcome counts each part, singular and plural, and names the backup', async () => {
    const {reviewOf, deleteOutcome} = await source;
    const review = reviewOf(preview({delete: [1, 2], archive: [3], protected: [9]}));
    assert.deepEqual(deleteOutcome({success: true, deleted: 2, archived: 3, already_archived: 0, not_found: 0, changed: 0,
        backup: 'prompts.db.backup_x'}, null, review), {committed: true, reload: true,
        toast: 'Deleted 2 prompts. Archived 3 prompts. 1 protected prompt was kept. Safety backup saved: prompts.db.backup_x (System › Backup & export).'});
    assert.equal(deleteOutcome({success: true, deleted: 1, archived: 0, already_archived: 1, not_found: 1, changed: 1,
        backup: null}, null, reviewOf(preview())).toast,
    'Deleted 1 prompt. 1 was already archived. 1 no longer exists. 1 changed since the review and was not deleted.');
    assert.equal(deleteOutcome({success: true, deleted: 0, archived: 0, already_archived: 2, not_found: 3, changed: 2,
        backup: null}, null, reviewOf(preview({protected: [1, 2]}))).toast,
    'Nothing was deleted or archived. 2 were already archived. 3 no longer exist. 2 changed since the review and were not deleted. 2 protected prompts were kept. The Library was reloaded.');
    assert.equal(deleteOutcome({success: true, deleted: 0, archived: 0}, null, reviewOf(preview())).committed, false);
});

test('a failed delete says nothing changed, or that it may have, and keeps or reloads the selection', async () => {
    const {deleteOutcome, COPY} = await source;
    assert.deepEqual(deleteOutcome(null, {status: 409, code: 'storage-changed'}), {toast: COPY.storage, committed: false, reload: true});
    assert.equal(COPY.storage, 'The library was restored or moved since this page loaded. Nothing was deleted or archived.');
    assert.deepEqual(deleteOutcome(null, {status: 409, code: 'busy', running: {title: 'Scan'}}),
        {toast: 'Scan is running. Nothing was changed; try again when it finishes.', committed: false, reload: false});
    assert.deepEqual(deleteOutcome(null, {status: 500, code: 'backup-failed', message: 'The safety backup could not be taken and verified; nothing was changed.'}),
        {toast: 'The safety backup failed. The safety backup could not be taken and verified; nothing was changed.', committed: false, reload: false});
    assert.deepEqual(deleteOutcome(null, {status: 507, code: 'insufficient-space', message: 'Not enough free disk space. Nothing was changed.'}),
        {toast: 'Not enough free disk space. Nothing was changed.', committed: false, reload: false});
    for (const failure of [new TypeError('Failed to fetch'), {status: 502}, {status: 503}, {status: 504}]) {
        assert.deepEqual(deleteOutcome(null, failure), {toast: COPY.unconfirmed, committed: true, reload: true});
    }
    assert.deepEqual(deleteOutcome(null, {status: 400}), {toast: COPY.failed, committed: false, reload: false});
});

test('a failed preview reloads only after a restore; Restore outcomes have their own words', async () => {
    const {previewOutcome, restoreOutcome, COPY} = await source;
    assert.deepEqual(previewOutcome({status: 409, code: 'storage-changed'}), {toast: COPY.storage, committed: false, reload: true});
    assert.deepEqual(previewOutcome({status: 500}), {toast: COPY.reviewFailed, committed: false, reload: false});
    assert.equal(previewOutcome({status: 409, code: 'busy', running: {title: 'Optimize'}}).toast,
        'Optimize is running. Nothing was changed; try again when it finishes.');
    assert.deepEqual(restoreOutcome({success: true, restored: 2, unchanged: 1, not_found: 1}, null),
        {toast: 'Restored 2 prompts to the Prompt library. 1 was not archived. 1 no longer exists.', committed: true, reload: true});
    assert.deepEqual(restoreOutcome({success: true, restored: 0, unchanged: 2, not_found: 0}, null),
        {toast: 'No prompt was restored. 2 were not archived.', committed: false, reload: true});
    assert.deepEqual(restoreOutcome(null, {status: 409, code: 'storage-changed'}), {toast: COPY.restoreStorage, committed: false, reload: true});
    assert.deepEqual(restoreOutcome(null, {status: 503}), {toast: COPY.restoreUnconfirmed, committed: true, reload: true});
    assert.deepEqual(restoreOutcome(null, {status: 400}), {toast: COPY.restoreFailed, committed: false, reload: false});
});

test('reviewOf keeps only well-formed ids and counts from an answer', async () => {
    const {reviewOf} = await source;
    const review = reviewOf({library_epoch: 3, delete: [1, 'x', -2, 2], archive: null, protected: [1.5], already_archived: -1,
        not_found: 'x', image_links: 2, backup: 'maybe', not_archived: -3});
    assert.deepEqual(review, {shelf: 'active', notArchived: 0, epoch: null, delete: [1, 2], archive: [], protected: [], alreadyArchived: 0, notFound: 0,
        imageLinks: 2, backup: 'on', disk: null, deletable: [], digests: {},
        pairedCounts: {pairs: 0, archivedPairs: 0, variants: 0, keptNegatives: 0}, pairedImageLinks: 0, choice: 'archive', archiveOnly: []});
});

test('the archived notice says why (the saved pair) and names negative variants only when there are any', async () => {
    const {archivedNoticeText} = await source;
    assert.equal(archivedNoticeText(0), 'This prompt is archived because it is in a saved pair. It is hidden from the Prompt ' +
        'library; nothing was removed.');
    assert.equal(archivedNoticeText(1), 'This prompt is archived because it is in a saved pair. It and its 1 negative variant ' +
        'are hidden from the Prompt library; nothing was removed.');
    assert.equal(archivedNoticeText(3), 'This prompt is archived because it is in a saved pair. It and its 3 negative variants ' +
        'are hidden from the Prompt library; nothing was removed.');
    // An unknown count (an older server) never claims variants.
    assert.equal(archivedNoticeText(undefined), archivedNoticeText(0));
});

// #482 (D160): prompts in a saved pair can be deleted permanently, with their own saved pairs.
const D1 = 'a'.repeat(64), D2 = 'b'.repeat(64);
const paired = (patch = {}) => preview({archive: [3, 4, 5], deletable: [3, 4], review_digests: {3: D1, 4: D2},
    paired_counts: {pairs: 3, archived_pairs: 1, variants: 2, kept_negatives: 2}, paired_image_links: 4, ...patch});

test('reviewOf reads the deletable ids, their digests and the pair counts; the choice starts at Archive', async () => {
    const {reviewOf, hasPairedChoice} = await source;
    const review = reviewOf(paired({deletable: [3, 4, 99], review_digests: {3: D1, 4: 'short', 99: D1}}));
    // Only reviewed archive ids with a well-formed digest can be deleted permanently.
    assert.deepEqual(review.deletable, [3]);
    assert.deepEqual(review.digests, {3: D1});
    assert.deepEqual(review.pairedCounts, {pairs: 3, archivedPairs: 1, variants: 2, keptNegatives: 2});
    assert.equal(review.pairedImageLinks, 4);
    assert.equal(review.choice, 'archive');
    assert.equal(hasPairedChoice(review), true);
    assert.equal(hasPairedChoice(reviewOf(preview({archive: [5]}))), false);
});

test('Archive chosen keeps the #443 review; Delete permanently names the pairs, the kept negatives and archive-only', async () => {
    const {reviewOf, withChoice, reviewGrid, reviewTitle, primaryLabel, deleteBody} = await source;
    const review = reviewOf(paired({delete: [1], image_links: 2}));
    assert.deepEqual(reviewGrid(review).map(([term]) => term), ['Delete permanently', 'Archive', 'Image links removed', 'Backup']);
    assert.equal(primaryLabel(review), 'Delete 1 and archive 3 prompts');
    assert.deepEqual(deleteBody(review), {archive_ids: [3, 4, 5], delete_ids: [1], expected_epoch: 'e', backup: 'on'});
    const permanent = withChoice(review, 'delete');
    assert.notEqual(permanent, review);
    assert.equal(review.choice, 'archive');
    assert.deepEqual(reviewGrid(permanent), [
        ['Delete permanently', '3 prompts: 1 not in a saved pair, 2 in a saved pair'],
        ['Saved pairs removed', '3 saved pairs (2 with a negative prompt, 1 archived)'],
        ['Negatives kept', '2 negative prompts are kept'],
        ['Archive', '1 prompt used as another prompt\'s negative: hidden, restorable'],
        ['Image links removed', '6 images will no longer show these prompts (files stay on disk)'],
        ['Backup', 'Create and verify before deleting'],
    ]);
    assert.equal(reviewTitle(permanent), 'Delete or archive selected prompts');
    assert.equal(primaryLabel(permanent), 'Delete 3 and archive 1 prompt');
    assert.deepEqual(deleteBody(permanent), {archive_ids: [3, 4, 5], delete_ids: [1], expected_epoch: 'e', backup: 'on',
        delete_paired_ids: [3, 4], paired_digests: {3: D1, 4: D2}});
});

test('edge counts: one prompt, no negative, nothing archive-only', async () => {
    const {reviewOf, withChoice, reviewGrid, reviewTitle, primaryLabel} = await source;
    // Live prompt 7896: one pair with an explicitly empty negative.
    const one = withChoice(reviewOf(preview({archive: [7], deletable: [7], review_digests: {7: D1},
        paired_counts: {pairs: 1, archived_pairs: 0, variants: 0, kept_negatives: 0}, paired_image_links: 0})), 'delete');
    assert.deepEqual(reviewGrid(one), [
        ['Delete permanently', '1 prompt in a saved pair'],
        ['Saved pairs removed', '1 saved pair'],
        ['Image links removed', '0 images will no longer show these prompts (files stay on disk)'],
        ['Backup', 'Create and verify before deleting'],
    ]);
    assert.equal(reviewTitle(one), 'Delete selected prompts');
    assert.equal(primaryLabel(one), 'Delete 1 prompt');
});

test('Delete permanently sentences: what goes with the pairs, what stays, and how it comes back', async () => {
    const {reviewOf, withChoice, reviewSentences} = await source;
    const [pairs, remove, archive] = reviewSentences(withChoice(reviewOf(paired()), 'delete'));
    assert.equal(pairs, 'Deleting a prompt in a saved pair also removes its saved pairs, with their titles, categories, ' +
        'ratings, notes, tags, run counts and image links. Their negative prompts are kept. Recorded runs stay in History ' +
        'and Activity, listed by their text.');
    assert.match(remove, /the only way back is to restore the safety backup/);
    assert.match(remove, /A pair node run with the same text saves a new pair\.$/);
    assert.equal(archive, 'Prompts used as another prompt\'s negative are archived instead of deleted, so that ' +
        'prompt\'s variant stays.');
    const [, off] = reviewSentences(withChoice(reviewOf(paired({backup: 'off'})), 'delete'));
    assert.match(off, /Deleted prompts cannot be brought back\./);
});

test('a short disk blocks only the permanent delete; the outcome names removed pairs', async () => {
    const {reviewOf, withChoice, blockedReason, deleteOutcome} = await source;
    const short = reviewOf(paired({disk: {sufficient: false, message: 'Not enough space. Nothing was changed.'}}));
    assert.equal(blockedReason(short), null);
    assert.equal(blockedReason(withChoice(short, 'delete')), 'Not enough space. Nothing was changed.');
    const {toast} = deleteOutcome({success: true, deleted: 2, archived: 1, pairs_removed: 3, changed: 1}, null, short);
    assert.equal(toast, 'Deleted 2 prompts. Removed 3 saved pairs. Archived 1 prompt. 1 changed since the review and ' +
        'was not deleted.');
});

// #492: Delete… on the archived shelf: no choice, only the permanent delete; what cannot be deleted stays archived.
const shelfPreview = (patch = {}) => preview({deletable: [], review_digests: {}, paired_counts: {pairs: 0, archived_pairs: 0,
    variants: 0, kept_negatives: 0}, paired_image_links: 0, not_archived: 0, ...patch});

test('the archived shelf review is the permanent delete, without the choice', async () => {
    const {reviewOf, hasPairedChoice, withChoice, reviewTitle, primaryLabel, reviewGrid, deleteBody, blockedReason} = await source;
    const review = reviewOf(shelfPreview({delete: [1], archive: [2, 3], deletable: [2], review_digests: {2: D1},
        paired_counts: {pairs: 2, archived_pairs: 1, variants: 1, kept_negatives: 1}, paired_image_links: 1, image_links: 1,
        not_archived: 1}), 'archived');
    assert.equal(review.shelf, 'archived');
    assert.equal(review.choice, 'delete');
    assert.equal(hasPairedChoice(review), false);
    assert.equal(withChoice(review, 'archive').choice, 'delete');
    assert.equal(reviewTitle(review), 'Delete archived prompts');
    assert.equal(primaryLabel(review), 'Delete 2 prompts');
    assert.equal(blockedReason(review), null);
    assert.deepEqual(reviewGrid(review), [
        ['Delete permanently', '2 prompts: 1 not in a saved pair, 1 in a saved pair'],
        ['Saved pairs removed', '2 saved pairs (1 with a negative prompt, 1 archived)'],
        ['Negatives kept', '1 negative prompt is kept'],
        ['Stays archived', "1 prompt used as another prompt's negative"],
        ['No longer archived (kept)', '1'],
        ['Image links removed', '2 images will no longer show these prompts (files stay on disk)'],
        ['Backup', 'Create and verify before deleting'],
    ]);
    // Only what it deletes is sent: the stays-archived id is left out.
    assert.deepEqual(deleteBody(review), {archive_ids: [2], delete_ids: [1], expected_epoch: 'e', backup: 'on',
        delete_paired_ids: [2], paired_digests: {2: D1}, shelf: 'archived'});
});

test('the archived shelf: unpaired only, nothing deletable, and its sentences', async () => {
    const {reviewOf, reviewGrid, reviewSentences, primaryLabel, blockedReason, COPY} = await source;
    const loose = reviewOf(shelfPreview({delete: [1]}), 'archived');
    assert.deepEqual(reviewGrid(loose).map(([term]) => term), ['Delete permanently', 'Image links removed', 'Backup']);
    assert.equal(reviewGrid(loose)[0][1], '1 prompt not in a saved pair');
    assert.equal(primaryLabel(loose), 'Delete 1 prompt');
    const [remove] = reviewSentences(loose);
    assert.match(remove, /^Deleting removes each prompt's text/);
    assert.doesNotMatch(reviewSentences(loose).join(' '), /saved pair/);
    const stays = reviewOf(shelfPreview({archive: [3], protected: [4]}), 'archived');
    assert.equal(blockedReason(stays), COPY.noneArchived);
    assert.equal(COPY.noneArchived, 'None of the selected prompts can be deleted.');
    const paired = reviewOf(shelfPreview({archive: [2, 3], deletable: [2], review_digests: {2: D1},
        paired_counts: {pairs: 1, archived_pairs: 0, variants: 0, kept_negatives: 0}}), 'archived');
    const sentences = reviewSentences(paired);
    assert.match(sentences[0], /^Deleting a prompt in a saved pair also removes its saved pairs/);
    assert.equal(sentences.at(-1), "Prompts used as another prompt's negative stay archived, so that prompt's variant stays.");
    // The active shelf is unchanged: a preview without a shelf is #482's.
    assert.equal(reviewOf(shelfPreview({archive: [2], deletable: [2], review_digests: {2: D1}})).choice, 'archive');
});

test('the outcome names prompts restored since the review', async () => {
    const {deleteOutcome} = await source;
    const outcome = deleteOutcome({success: true, deleted: 1, archived: 0, not_archived: 2, changed: 0}, null, {protected: []});
    assert.equal(outcome.toast, 'Deleted 1 prompt. 2 were restored since the review and kept.');
    const none = deleteOutcome({success: true, deleted: 0, archived: 0, not_archived: 1, changed: 1}, null,
        {protected: [], shelf: 'archived'});
    assert.equal(none.toast, 'Nothing was deleted. 1 was restored since the review and kept. 1 changed since the review and ' +
        'was not deleted. The Library was reloaded.');
});

// #512 (live test of #505/#507/#509): the review names a single prompt, and a negative selected without its positive.
test('a review from a prompt\'s own page names that prompt', async () => {
    const {reviewOf, reviewTitle, blockedReason} = await source;
    const single = review => ({...review, single: true});
    assert.equal(reviewTitle(single(reviewOf(preview({delete: [1]})))), 'Delete this prompt');
    assert.equal(reviewTitle(single(reviewOf(preview({archive: [2]})))), 'Archive this prompt');
    const kept = single(reviewOf(preview({protected: [3]})));
    assert.equal(reviewTitle(kept), 'Delete this prompt');
    assert.equal(blockedReason(kept), 'This prompt cannot be deleted or archived.');
    assert.equal(reviewTitle(single(reviewOf(preview({archive: [2], deletable: [2], review_digests: {2: 'c'.repeat(64)}}),
        'archived'))), 'Delete this prompt');
});

test('a negative used by another prompt is named as such when it is archived', async () => {
    const {reviewOf, reviewGrid, reviewSentences} = await source;
    const negative = reviewOf(preview({archive: [5], deletable: []}));
    assert.deepEqual(reviewGrid(negative), [['Archive', "1 prompt used as another prompt's negative: hidden, restorable"]]);
    assert.deepEqual(reviewSentences(negative), ["Prompts used as another prompt's negative are archived instead of deleted, so " +
        "that prompt's variant stays. To bring them back, press Show archived prompts, select them and press Restore."]);
    const mixed = reviewOf(preview({archive: [2, 5], deletable: [2], review_digests: {2: 'c'.repeat(64)}}));
    assert.deepEqual(reviewGrid(mixed)[0], ['Archive', "2 prompts in a saved pair (1 used as another prompt's negative): hidden, restorable"]);
    // A paired prompt whose review digest is missing is not called another prompt's negative (review M1).
    const noDigest = reviewOf(preview({archive: [2], deletable: [2], review_digests: {}}));
    assert.deepEqual(reviewGrid(noDigest), [['Archive', '1 prompt in a saved pair: hidden, restorable']]);
    const sentences = reviewSentences(mixed);
    assert.match(sentences[0], /^Prompts in a saved pair, as its positive or its negative, are archived instead of deleted/);
    assert.match(sentences[1], /^Prompts used as another prompt's negative are archived instead of deleted, so that prompt's variant stays\.$/);
});