// ── The step editor's Rust half (PLAN_REDESIGNS.md §2, protocol 14) ──────────
//
//   `linked` rewards every linked player of the server, reads no tally, and is
//     refused past the server's bound rather than trimmed (§2.5)
//   a reward's message is checked with the kit's name in it, and a blank one
//     says nothing — every step saved before protocol 14 (D333)
//   the sync carries every untold message to the account the reward picked,
//     and stops once it is told; the key reads back to its row
//   the kit warning names how many linked players have used the kit up (§2.6)
//   the kit weekend builds the plan the plan describes, and only the steps the
//     kit can use (§2.5, D164)

const test = require('node:test')
const assert = require('node:assert')

const { fakeCtx } = require('./_fakes')

require('../core')._reset()
require('../core').init(fakeCtx())

const client = require('../sidecarClient')
const serversDb = require('../model/servers/servers.db')
const servers = require('../model/servers/servers.model')
const permDb = require('../model/permissions/permissions.db')
const linksDb = require('../model/links/links.db')
const emit = require('../engagement/emit')
const rewards = require('../eventRewards')
const leases = require('../eventLeases')
const templates = require('../eventTemplates')
const model = require('../model/permissions/permissions.model')

const entitle = rewards.ACTIONS.find((a) => a.id === 'rust.kit.entitle')
const ok = (data) => ({ ok: true, status: 'ok', data })
const MAIN = { id: 'main', name: 'Main', sidecarBaseUrl: 'http://main:1', sidecarTokenEnc: null, enabled: 1 }
const KIT = { name: 'vip', permission: 'kits.vip', max: 2, cooldown: 86400 }

/** Swap one module's members for a test, and put them back after. */
function swap(t, mod, members) {
  const saved = {}
  for (const k of Object.keys(members)) saved[k] = mod[k]
  Object.assign(mod, members)
  t.after(() => Object.assign(mod, saved))
}

function rewardStubs(t, { linked = [], kits = [KIT], maxRecipients = 100 } = {}) {
  const calls = { grants: [], tally: 0 }
  swap(t, serversDb, { getServer: async (id) => (id === 'main' ? MAIN : null) })
  swap(t, client, {
    kits: async () => ok({ kind: 'kits.list', kits, maxRecipients }),
    tallySnapshot: async () => {
      calls.tally++
      return ok({ kind: 'tally.snapshot', people: [], maxRecipients })
    },
  })
  swap(t, permDb, {
    insertRunGrants: async (rows) => calls.grants.push(...rows),
    listRunGrantsForStep: async () => [],
    markDirty: async () => {},
  })
  swap(t, linksDb, {
    linkedOnServer: async (serverId, limit) => linked.slice(0, limit),
  })
  swap(t, emit, { entitled: () => 0 })
  return calls
}

const envelope = (params) => ({ runId: '7', stepId: '3', idempotencyKey: 'k', params })

// ── linked ──────────────────────────────────────────────────────────────────

test('linked rewards every linked player of the server and reads no tally', async (t) => {
  const calls = rewardStubs(t, {
    linked: [
      { steamId: '76561190000000001', userId: 11, name: 'Ann' },
      { steamId: '76561190000000002', userId: 12, name: 'Bo' },
    ],
  })
  const answer = await entitle.perform(envelope({ kit: 'main/vip', recipients: 'linked' }))
  assert.strictEqual(answer.ok, true, answer.error)
  assert.strictEqual(calls.tally, 0)
  assert.deepStrictEqual(calls.grants.map((r) => [r.userId, r.steamId, r.kit, r.credit]), [
    [11, '76561190000000001', 'vip', true],
    [12, '76561190000000002', 'vip', true],
  ])
  // No message asked for, so none written: a step from before protocol 14.
  assert.ok(calls.grants.every((r) => !('notice' in r)))
  assert.strictEqual(answer.detail.mode, 'linked')
})

test('linked past the server\'s bound is refused, never trimmed', async (t) => {
  const linked = Array.from({ length: 4 }, (_, i) => ({ steamId: `7656119000000000${i}`, userId: i + 1 }))
  rewardStubs(t, { linked, maxRecipients: 3 })
  const answer = await entitle.perform(envelope({ kit: 'main/vip', recipients: 'linked' }))
  assert.strictEqual(answer.ok, false)
  assert.strictEqual(answer.retry, false)
  assert.match(answer.error, /more than 3 linked players/)
})

test('linked takes no count and is priced at the most a step can grant', () => {
  assert.deepStrictEqual(rewards.checkCount('linked', 5), { ok: true, value: null })
  assert.deepStrictEqual(entitle.cost({ recipients: 'linked' }), { 'rust.grants': rewards.MAX_RECIPIENTS })
})

// ── The reward's message (D333) ─────────────────────────────────────────────

test('a message is written per row with the kit\'s name in it, and says how it goes', async (t) => {
  const calls = rewardStubs(t, { linked: [{ steamId: '76561190000000001', userId: 11 }] })
  const answer = await entitle.perform(envelope({
    kit: 'main/vip', recipients: 'linked', message: 'You earned kit {kit} — type /kit {kit}', delivery: 'Popup',
  }))
  assert.strictEqual(answer.ok, true, answer.error)
  assert.strictEqual(calls.grants[0].notice, 'You earned kit vip — type /kit vip')
  assert.strictEqual(calls.grants[0].noticeDelivery, 'popup')
  assert.match(answer.detail.told, /1 will be told in game, by popup/)
})

test('a message is checked on the form: its length with the kit in it, and where it goes', () => {
  assert.deepStrictEqual(rewards.rewardNotice({}, 'vip'), { ok: true, text: null, delivery: null })
  assert.deepStrictEqual(rewards.rewardNotice({ message: '   ' }, 'vip'), { ok: true, text: null, delivery: null })
  assert.strictEqual(rewards.rewardNotice({ message: 'hi' }, 'vip').delivery, 'chat')
  assert.match(rewards.rewardNotice({ message: 'hi', delivery: 'shout' }, 'vip').error, /not to "shout"/)
  // 250 characters fit; with a long kit name in place of {kit} they do not.
  const text = `${'x'.repeat(245)}{kit}`
  assert.strictEqual(rewards.rewardNotice({ message: text }, 'vip').ok, true)
  assert.match(rewards.rewardNotice({ message: text }, 'a-very-long-kit-name').error, /at most 256 characters/)
})

// ── The sync's notices ──────────────────────────────────────────────────────

const authored = (runGrants) => ({
  groups: [],
  groupServers: [],
  groupPermissions: [],
  members: [],
  steamMembers: [],
  grants: [],
  steamGrants: [],
  exceptions: [],
  groupChat: [],
  steamIdsByUser: new Map([[11, ['76561190000000001']], [12, ['76561190000000002']]]),
  runGrants,
})

const grantRow = (extra) => ({
  runId: '7', stepId: '3', userId: 11, serverId: 'main', steamId: '76561190000000001',
  permission: 'kits.vip', kit: 'vip', credit: 1, notice: null, noticeDelivery: null, noticeToldAt: null, ...extra,
})

test('the sync carries each untold message to the account the reward picked', () => {
  const desired = model.buildDesired('main', authored([
    grantRow({ notice: 'You earned kit vip', noticeDelivery: 'popup' }),
    // Told already: it leaves the set, which is what lets the plugin forget it.
    grantRow({ userId: 12, steamId: '76561190000000002', notice: 'x', noticeToldAt: new Date() }),
    // No message: a reward that says nothing.
    grantRow({ stepId: '4' }),
    // Another server's reward is that server's to say.
    grantRow({ serverId: 'alt', stepId: '5', notice: 'elsewhere' }),
    // Unlinked since: nobody to tell.
    grantRow({ stepId: '6', steamId: '76561190000000099', notice: 'gone' }),
  ]))
  assert.deepStrictEqual(desired.payload.notices, [
    { key: '7:3:11', steamId: '76561190000000001', message: 'You earned kit vip', delivery: 'popup' },
  ])
})

test('a notice moves the digest, so a new one is pushed and a told one is dropped', () => {
  const none = model.buildDesired('main', authored([grantRow({})]))
  const one = model.buildDesired('main', authored([grantRow({ notice: 'hi', noticeDelivery: 'chat' })]))
  const told = model.buildDesired('main', authored([grantRow({ notice: 'hi', noticeToldAt: new Date() })]))
  assert.deepStrictEqual(none.payload.notices, [])
  assert.notStrictEqual(none.hash, one.hash)
  assert.strictEqual(none.hash, told.hash)
})

test('a told key reads back to its row; a malformed one changes nothing', async (t) => {
  const core = require('../core')
  const queries = []
  swap(t, core, {
    query: async (sql, params) => {
      queries.push(params)
      return { affectedRows: 1 }
    },
  })
  const marked = await permDb.markNoticesTold('main', ['7:3:11', 'nonsense', '7:3:x'])
  assert.strictEqual(marked, 1)
  assert.deepStrictEqual(queries, [['main', '7', '3', 11]])
})

// ── The kit warning (§2.6) ──────────────────────────────────────────────────

test('the note says the limit, the cooldown, and how many have used the kit up', () => {
  assert.strictEqual(
    leases.kitNote(KIT, { asked: 41, exhausted: 9, onCooldown: 3 }),
    'Kit vip: 2 uses, 24 h cooldown — 9 of 41 linked players have used it up, 3 are on its cooldown. A kit weekend\'s extra use is what lets them take it again.',
  )
  assert.match(leases.kitNote({ name: 'free', max: 0, cooldown: 0 }, { asked: 5 }), /^Kit free: no use limit — 5 linked players\./)
  assert.match(leases.kitNote(KIT, { asked: 0 }), /no linked player has played on this server yet/)
})

test('the group-permission source notes the rows that grant a kit\'s permission', async (t) => {
  leases.kitNoteCache.clear()
  t.after(() => leases.kitNoteCache.clear())
  const asked = []
  swap(t, servers, { listForPolling: async () => [{ id: 'main', name: 'Main', baseUrl: 'http://main:1', token: 't' }] })
  swap(t, client, {
    permCatalogue: async () => ok({ kind: 'perm.catalogue', permissions: ['kits.vip', 'other.thing'], groups: [{ name: 'default' }] }),
    kits: async () => ok({ kind: 'kits.list', kits: [KIT, { name: 'open', permission: '', max: 1 }] }),
    kitsUses: async (server, kit, steamIds) => {
      asked.push({ kit, steamIds })
      return ok({ kind: 'kits.uses', kit, max: 2, cooldown: 86400, asked: steamIds.length, exhausted: 1, onCooldown: 0 })
    },
  })
  swap(t, linksDb, { linkedOnServer: async () => [{ steamId: '76561190000000001' }, { steamId: '76561190000000002' }] })

  const source = leases.OPTION_SOURCES.find((s) => s.id === 'rust.options.grouppermissions')
  const rows = await source.resolve({})
  const vip = rows.find((r) => r.value === 'main/default/kits.vip')
  const other = rows.find((r) => r.value === 'main/default/other.thing')
  assert.match(vip.note, /^Kit vip: 2 uses, 24 h cooldown — 1 of 2 linked players have used it up\./)
  assert.strictEqual('note' in other, false)
  // Only the kit a permission gates is asked about, and with the server's linked players.
  assert.deepStrictEqual(asked, [{ kit: 'vip', steamIds: ['76561190000000001', '76561190000000002'] }])

  // Asked again within the minute: answered from the cache.
  await source.resolve({})
  assert.strictEqual(asked.length, 1)
})

test('a kit warning that cannot be read is no note, never a broken field', async (t) => {
  leases.kitNoteCache.clear()
  t.after(() => leases.kitNoteCache.clear())
  swap(t, client, {
    kits: async () => ok({ kind: 'kits.list', kits: [KIT] }),
    kitsUses: async () => ({ ok: false, status: 'timeout', data: null }),
  })
  swap(t, linksDb, { linkedOnServer: async () => [] })
  const notes = await leases.kitNotes({ id: 'main' })
  assert.strictEqual(notes.size, 0)
})

// ── The kit weekend (§2.5) ──────────────────────────────────────────────────

const weekend = templates.TEMPLATES.find((x) => x.id === 'rust.template.kit_weekend')

function weekendStubs(t, kits = [KIT]) {
  swap(t, serversDb, { getServer: async (id) => (id === 'main' ? MAIN : null) })
  swap(t, client, { kits: async () => ok({ kind: 'kits.list', kits, maxRecipients: 100 }) })
}

test('the kit weekend is one phase as long as the weekend, holding both steps', async (t) => {
  weekendStubs(t)
  const draft = await weekend.build({ inputs: { kit: 'main/vip', minutes: 2880, message: 'Kit weekend! {kit}', delivery: 'popup' } })
  assert.strictEqual(draft.title, 'Kit weekend: vip on Main')
  assert.strictEqual(draft.summary, 'For 48 hours, everybody on Main may redeem vip, and every linked player gets one more use of it.')
  const [phase] = draft.spec.phases
  assert.deepStrictEqual(phase.advance, { after: '2880m' })
  assert.deepStrictEqual(phase.steps.map((s) => s.actionId), ['core.lease', 'rust.kit.entitle'])
  assert.deepStrictEqual(phase.steps[0].params, {
    lease: 'rust.group.permission', target: 'main/default/kits.vip', value: 'true', minutes: 2880,
  })
  assert.deepStrictEqual(phase.steps[1].params, {
    kit: 'main/vip', recipients: 'linked', message: 'Kit weekend! {kit}', delivery: 'popup',
  })
})

test('a kit with no permission is step 2 alone; one with no use limit is step 1 alone', async (t) => {
  weekendStubs(t, [{ name: 'open', permission: '', max: 1 }, { name: 'free', permission: 'kits.free', max: 0 }])
  const open = await weekend.build({ inputs: { kit: 'main/open', minutes: 60 } })
  assert.deepStrictEqual(open.spec.phases[0].steps.map((s) => s.actionId), ['rust.kit.entitle'])
  assert.ok(!('message' in open.spec.phases[0].steps[0].params))
  const free = await weekend.build({ inputs: { kit: 'main/free', minutes: 60 } })
  assert.deepStrictEqual(free.spec.phases[0].steps.map((s) => s.actionId), ['core.lease'])
})

test('the kit weekend refuses what its steps would refuse, in the author\'s words', async (t) => {
  weekendStubs(t)
  assert.match((await weekend.build({ inputs: { kit: 'vip', minutes: 60 } })).error, /as server\/kit/)
  assert.match((await weekend.build({ inputs: { kit: 'main/vip', minutes: 20000 } })).error, /1 to 10080 minutes/)
  assert.match((await weekend.build({ inputs: { kit: 'main/vip', minutes: 60, delivery: 'shout', message: 'x' } })).error, /not to "shout"/)
  assert.match((await weekend.build({ inputs: { kit: 'gone/vip', minutes: 60 } })).error, /gone/)
  assert.match((await weekend.build({ inputs: { kit: 'main/nope', minutes: 60 } })).error, /no kit called "nope"/)
})

test('the template\'s inputs are params core will accept, and its minutes are a duration', () => {
  for (const p of weekend.inputs) {
    assert.ok(p.example !== undefined && p.example !== '', `${p.name} needs an example`)
  }
  assert.strictEqual(weekend.inputs.find((p) => p.name === 'minutes').duration, 'minutes')
  assert.ok(/^rust\.[a-z0-9_]+\.[a-z0-9_]+$/.test(weekend.id))
})

test('the module\'s timed params say they are durations', () => {
  const zone = require('../eventWorld').ACTIONS.find((a) => a.id === 'rust.zone.open')
  const tally = rewards.ACTIONS.find((a) => a.id === 'rust.participation.open')
  assert.strictEqual(zone.params.find((p) => p.name === 'minutes').duration, 'minutes')
  assert.strictEqual(tally.params.find((p) => p.name === 'minutes').duration, 'minutes')
  const groupLease = leases.LEASES.find((l) => l.id === 'rust.group.permission')
  assert.strictEqual(groupLease.example, true)
})