// ── Who a deleted account's snapshots show as (ACCOUNT_DELETION.md AD5, AD6) ──
//
// The rule itself, then each place a member can read a snapshot: forum threads
// and posts, the leader's guest list, and the Team digest mail. The Reports
// queue (staff-only) is covered in contentReports.test.js.
process.env.DB_HOST = '127.0.0.1'
process.env.DB_PORT = '59999'

const { test, afterEach, after } = require('node:test')
const assert = require('node:assert/strict')

const { displayAuthor, DELETED_PLAYER, seesDeletedNames, hasActor } = require('../src/utils/displayAuthor')
const forum = require('../src/model/teams/teamForum.model')
const grants = require('../src/model/teams/teamGrants.model')
const accessDb = require('../src/model/teams/teamAccess.db')
const teamsDb = require('../src/model/teams/teams.db')
const db = require('../src/utils/db')

after(() => db.close())

const saved = []
function patch(obj, key, value) {
  saved.push([obj, key, obj[key]])
  obj[key] = value
}
afterEach(() => {
  while (saved.length) {
    const [obj, key, value] = saved.pop()
    obj[key] = value
  }
})

const MEMBER = { role: 'player' }
const STAFF = ['admin', 'editor', 'moderator'].map((role) => ({ role }))

// ── the rule ───────────────────────────────────────────────────────────────

test('a live account shows its name to everyone', () => {
  for (const viewer of [null, MEMBER, ...STAFF]) {
    assert.deepEqual(displayAuthor({ userId: 4, username: 'Thorne' }, viewer), { name: 'Thorne', deleted: false })
  }
})

test('a deleted account reads "[deleted player]" to members and visitors (AD5)', () => {
  assert.equal(DELETED_PLAYER, '[deleted player]')
  for (const viewer of [null, undefined, MEMBER, { role: 'leader' }, {}]) {
    assert.deepEqual(displayAuthor({ userId: null, username: 'Ravenna' }, viewer), { name: DELETED_PLAYER, deleted: true })
  }
})

test('staff — admin, editor and moderator — see the stored name, marked deleted (AD6)', () => {
  for (const viewer of STAFF) {
    assert.equal(seesDeletedNames(viewer), true)
    assert.deepEqual(displayAuthor({ userId: null, username: 'Ravenna' }, viewer), { name: 'Ravenna', deleted: true })
  }
  // With no snapshot at all there is no name to show anybody.
  assert.deepEqual(displayAuthor({ userId: null, username: null }, STAFF[0]), { name: DELETED_PLAYER, deleted: true })
})

test('an absent actor is not a deleted one', () => {
  assert.equal(hasActor(null, null), false)
  assert.equal(hasActor(null, ''), false)
  assert.equal(hasActor(null, 'OldMod'), true)
  assert.equal(hasActor(5, null), true)
})

// ── forum threads and posts ────────────────────────────────────────────────

const threadRow = (over = {}) => ({
  id: 5, type: 'discussion', title: 'Raid night', created_by: null, created_username: 'Ravenna',
  created_at: new Date(), last_post_at: new Date(), post_count: 2, pinned: 0, locked: 0, status: 'visible', ...over,
})
const postRow = (over = {}) => ({
  id: 80, thread_id: 5, author_user_id: null, author_username: 'Ravenna', body_html: '<p>Guide</p>',
  created_at: new Date(), edited_at: null, status: 'visible', ...over,
})

test('a forum thread by a deleted account: "[deleted player]" to a member, the name to staff', () => {
  assert.equal(forum.publicThread(threadRow(), MEMBER).author, DELETED_PLAYER)
  assert.equal(forum.publicThread(threadRow()).author, DELETED_PLAYER) // no viewer said
  assert.equal(forum.publicThread(threadRow(), MEMBER).authorDeleted, true)
  for (const viewer of STAFF) {
    const t = forum.publicThread(threadRow(), viewer)
    assert.equal(t.author, 'Ravenna')
    assert.equal(t.authorDeleted, true)
  }
  assert.equal(forum.publicThread(threadRow({ created_by: 4 }), MEMBER).author, 'Ravenna')
  assert.equal(forum.publicThread(threadRow({ created_by: 4 }), MEMBER).authorDeleted, false)
})

test('a forum post by a deleted account follows the same rule, and is nobody’s to edit', () => {
  const asMember = forum.renderPost(postRow(), 'disabled', { userId: 9, role: 'player', isStaff: false })
  assert.equal(asMember.author, DELETED_PLAYER)
  assert.equal(asMember.authorDeleted, true)
  assert.equal(asMember.mine, false)
  assert.equal(asMember.canEdit, false)

  const asEditor = forum.renderPost(postRow(), 'disabled', { userId: 2, role: 'editor', isStaff: false })
  assert.equal(asEditor.author, 'Ravenna')
  assert.equal(asEditor.authorDeleted, true)
})

test('the thread list and a thread pass the viewer down to every row', async () => {
  const forumDb = require('../src/model/teams/teamForum.db')
  const forumSettings = require('../src/model/teams/teamForumSettings.model')
  patch(forumDb, 'threadsByTeam', async () => [threadRow()])
  patch(forumDb, 'threadById', async () => ({ ...threadRow(), team_id: 1 }))
  patch(forumDb, 'postsByThread', async () => [postRow()])
  patch(forumSettings, 'imageMode', async () => 'disabled')

  const [listedForMember] = await forum.listThreads(1, { viewer: MEMBER })
  assert.equal(listedForMember.author, DELETED_PLAYER)
  const [listedForStaff] = await forum.listThreads(1, { viewer: { role: 'moderator' } })
  assert.equal(listedForStaff.author, 'Ravenna')

  const thread = await forum.getThread(1, 5, { viewer: { userId: 9, role: 'player' } })
  assert.equal(thread.author, DELETED_PLAYER)
  assert.equal(thread.posts[0].author, DELETED_PLAYER)
  const staffThread = await forum.getThread(1, 5, { canModerate: true, viewer: { userId: 2, role: 'admin', isStaff: true } })
  assert.equal(staffThread.author, 'Ravenna')
  assert.equal(staffThread.posts[0].author, 'Ravenna')
})

// ── the leader's guest list ────────────────────────────────────────────────

test('a deleted account is not a forum guest, and a deleted granter reads "[deleted player]" (AD13)', async () => {
  patch(accessDb, 'activeGrants', async () => [
    { user_id: 21, username: 'Guest', granted_by: null, granted_username: 'OldLeader', granted_at: new Date(), reason: null },
    { user_id: null, username: 'Ravenna', granted_by: 4, granted_username: 'Leader', granted_at: new Date(), reason: null },
    { user_id: 22, username: 'Member', granted_by: 4, granted_username: 'Leader', granted_at: new Date(), reason: null },
  ])
  patch(teamsDb, 'membersByTeam', async () => [{ user_id: 22 }])

  const guests = await grants.forumGuests(1, MEMBER)
  assert.deepEqual(guests.map((g) => g.username), ['Guest'])
  assert.equal(guests[0].grantedBy, DELETED_PLAYER)

  const forStaff = await grants.forumGuests(1, { role: 'moderator' })
  assert.equal(forStaff[0].grantedBy, 'OldLeader')
})

// ── the Team digest ────────────────────────────────────────────────────────

test('the digest mail names a deleted author "[deleted player]"', async () => {
  const worker = require('../src/utils/teamDigestWorker')
  const teamNotify = require('../src/model/teams/teamNotify.model')
  const templates = require('../src/engagement/templates')
  const safety = require('../src/model/safety/userSafety.model')
  let items = null
  patch(safety, 'forumFilter', async () => ({
    blockedUserIds: new Set(),
    hidden: { team_forum_thread: new Set(), team_forum_post: new Set() },
  }))
  patch(teamNotify, 'digestPostsSince', async () => [
    { id: 1, thread_id: 5, body_html: '<p>a</p>', created_at: new Date(), author_user_id: null, author_username: 'Ravenna', title: 'Raid night', type: 'discussion' },
    { id: 2, thread_id: 5, body_html: '<p>b</p>', created_at: new Date(), author_user_id: 4, author_username: 'Thorne', title: 'Raid night', type: 'discussion' },
  ])
  patch(templates, 'renderByKey', async (key, values) => {
    items = values.items
    return null // stop before anything is sent
  })
  await worker.sendOne({ id: 1, slug: 'wolves', name: 'Iron Wolves' }, { user_id: 9, last_digest_at: null }, null, new Date())
  assert.deepEqual(items.map((i) => i.heading), ['Raid night — [deleted player]', 'Raid night — Thorne'])
})