# boards.ludic - posting: the morning takes down what is stale and asks the game for a new one, on
# the jobs' own dice seeded by the day, so a board never moves anyone else's rolls
export function jobs_board_ok(b: int) -> bool { return b >= 0 and b < BOARD_COUNT }

function jobs__at(jobs_st: JobsState, b: int, s: int) -> int {
  return jobs_st.jobs__off[b] + s
}

# a whole number in [lo, hi] from the jobs' dice: what JobsWorld.roll draws with
export function jobs_roll(jobs_st: JobsState, lo: int, hi: int) -> int {
  return rng_between(jobs_st.jobs__dice, lo, hi)
}

# inside JobsWorld.roll: what goes up in the slot being filled
export function jobs_post(jobs_st: mut JobsState, b: int, s: int, kind: int, param: int, need: int, money: int, rep: int) -> void {
  let k = jobs__at(jobs_st, b, s)
  jobs_st.jobs__pk[k] = kind
  jobs_st.jobs__pp[k] = param
  jobs_st.jobs__pn[k] = need
  jobs_st.jobs__pm[k] = money
  jobs_st.jobs__pr[k] = rep
  jobs_st.jobs__ph[k] = 0
  jobs_st.jobs__ps[k] = JOBS_ACTIVE
  jobs_st.jobs__pd[k] = JobsWorld.day()
  let e = JobsWorld.evidence(kind, param)
  jobs_st.jobs__pb[k] = 0
  if e > 0 { jobs_st.jobs__pb[k] = e }
}

function jobs__clear(jobs_st: mut JobsState, k: int) -> void {
  jobs_st.jobs__pk[k] = -1
  jobs_st.jobs__pp[k] = -1
  jobs_st.jobs__pn[k] = 0
  jobs_st.jobs__ph[k] = 0
  jobs_st.jobs__ps[k] = JOBS_OFFERED
}

# take a slot down and ask the game for what replaces it
function jobs__repost(jobs_st: mut JobsState, b: int, s: int) -> void {
  let k = jobs__at(jobs_st, b, s)
  let day = JobsWorld.day()
  rng_seed(jobs_st.jobs__dice, jobs_st.jobs__seed + day * 7 + b * 7919 + s * 104729 + jobs_st.jobs__serial[b] * 31)
  jobs_st.jobs__serial[b] += 1
  jobs__clear(jobs_st, k)
  JobsWorld.roll(b, s)
  if jobs_st.jobs__pk[k] >= 0 { jobs__fact(jobs_st, JOBS_F_OFFERED, -1, b, s, 0, jobs_st.jobs__pn[k]) }
}

# a new day, on the boards this machine keeps: an empty or stale post is replaced, and one
# finished on an earlier day
export function jobs_morning(jobs_st: mut JobsState) -> void {
  let day = JobsWorld.day()
  for b in 0 .. BOARD_COUNT {
    let bd = JobBoards[b]
    if not JobsWorld.owns(bd.scope) { continue }
    for s in 0 .. bd.slots {
      let k = jobs_st.jobs__off[b] + s
      let finished = jobs_st.jobs__ps[k] == JOBS_DONE and day > jobs_st.jobs__pd[k]
      if jobs_st.jobs__pk[k] < 0 or finished or day - jobs_st.jobs__pd[k] >= bd.keep { jobs__repost(jobs_st, b, s) }
    }
  }
}

function jobs__post_moved(jobs_st: mut JobsState, b: int, s: int, have: int) -> void {
  let k = jobs_st.jobs__off[b] + s
  let was = jobs_st.jobs__ph[k]
  jobs_st.jobs__ph[k] = have
  if jobs_st.jobs__ph[k] > jobs_st.jobs__pn[k] { jobs_st.jobs__ph[k] = jobs_st.jobs__pn[k] }
  if jobs_st.jobs__ph[k] > was { jobs__fact(jobs_st, JOBS_F_PROGRESSED, -1, b, s, jobs_st.jobs__ph[k], jobs_st.jobs__pn[k]) }
  if jobs_st.jobs__ps[k] != JOBS_ACTIVE or jobs_st.jobs__ph[k] < jobs_st.jobs__pn[k] { return }
  jobs_st.jobs__ps[k] = JOBS_READY
  jobs__fact(jobs_st, JOBS_F_COMPLETED, -1, b, s, jobs_st.jobs__ph[k], jobs_st.jobs__pn[k])
  if JobBoards[b].auto { jobs_post_hand_in(jobs_st, b, s) }
}

export function jobs_post_hand_in(jobs_st: mut JobsState, b: int, s: int) -> bool {
  if not jobs_board_ok(b) or s < 0 or s >= JobBoards[b].slots { return false }
  let k = jobs__at(jobs_st, b, s)
  if jobs_st.jobs__ps[k] != JOBS_READY { return false }
  jobs_st.jobs__ps[k] = JOBS_DONE
  jobs_st.jobs__total[b] += 1
  JobsPay.reward(JobBoards[b].scope, jobs_st.jobs__pm[k], jobs_st.jobs__pr[k])
  jobs__fact(jobs_st, JOBS_F_HANDED_IN, -1, b, s, jobs_st.jobs__ph[k], jobs_st.jobs__pn[k])
  if JobBoards[b].refill { jobs__repost(jobs_st, b, s) }
  return true
}