forked from minetest-mods/global_exchange
Cancel remaining buy order when out of funds.
This commit is contained in:
Jesse McDonald
parent
808b3cbf04
commit
141de27c97
197
exchange.lua
197
exchange.lua
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@ -861,6 +861,8 @@ function ex_methods.buy(self, p_name, ex_name, item_name, wear, amount, rate)
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local bought = {}
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local remaining = amount
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local out_of_funds = false
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local last_row_rate = rate
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local del_stmt = self.stmts.del_order_stmt
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local red_stmt = self.stmts.reduce_order_stmt
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@ -882,6 +884,8 @@ function ex_methods.buy(self, p_name, ex_name, item_name, wear, amount, rate)
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if poster ~= p_name then
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local can_afford = math.floor(balance / row_rate)
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last_row_rate = row_rate
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out_of_funds = row_bought < can_afford
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row_bought = math.min(row_bought, can_afford)
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-- asking prices can only increase from here
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if row_bought == 0 then break end
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@ -933,7 +937,7 @@ function ex_methods.buy(self, p_name, ex_name, item_name, wear, amount, rate)
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balance = balance - cost
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local log_succ, log_err =
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self:log(p_name .. " bought " .. row_amount .. " " ..
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self:log(p_name .. " bought " .. row_bought .. " " ..
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item_name .. " from you. (+" .. cost .. ")",
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poster)
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if not log_succ then
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@ -943,7 +947,7 @@ function ex_methods.buy(self, p_name, ex_name, item_name, wear, amount, rate)
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end
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local log_succ, log_err =
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self:log("Bought " .. row_amount .. " " .. item_name ..
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self:log("Bought " .. row_bought .. " " .. item_name ..
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" from " .. poster .. ". (-" .. cost .. ")",
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p_name)
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if not log_succ then
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@ -953,7 +957,7 @@ function ex_methods.buy(self, p_name, ex_name, item_name, wear, amount, rate)
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end
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else
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local log_succ, log_err =
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self:log("Bought " .. row_amount .. " " ..
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self:log("Bought " .. row_bought .. " " ..
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item_name .. " from yourself.",
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p_name)
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if not log_succ then
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@ -969,27 +973,38 @@ function ex_methods.buy(self, p_name, ex_name, item_name, wear, amount, rate)
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remaining = remaining - row_bought
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if remaining == 0 then break end
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if remaining == 0 or out_of_funds then break end
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end
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search_stmt:reset()
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if remaining > 0 then
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local add_succ, add_err =
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self:add_order(p_name, ex_name, "buy", item_name, wear, remaining, rate)
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if out_of_funds then
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local log_succ, log_err =
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self:log("Insufficient funds to buy " .. remaining .. " " ..
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item_name .. " at " .. last_row_rate .. "/ea.",
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p_name)
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if not log_succ then
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db:exec("ROLLBACK;")
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return false, log_err
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end
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else
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local add_succ, add_err =
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self:add_order(p_name, ex_name, "buy", item_name, wear, remaining, rate)
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if not add_succ then
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db:exec("ROLLBACK;")
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return false, add_err
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end
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if not add_succ then
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db:exec("ROLLBACK;")
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return false, add_err
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end
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local log_succ, log_err =
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self:log("Posted buy offer for " .. remaining .. " " ..
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item_name .. " at " .. rate .. "/ea.",
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p_name)
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if not log_succ then
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db:exec("ROLLBACK;")
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return false, log_err
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local log_succ, log_err =
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self:log("Posted buy offer for " .. remaining .. " " ..
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item_name .. " at " .. rate .. "/ea.",
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p_name)
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if not log_succ then
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db:exec("ROLLBACK;")
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return false, log_err
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end
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end
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end
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@ -1039,6 +1054,8 @@ function ex_methods.sell(self, p_name, ex_name, item_name, wear, amount, rate)
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local row_rate = row.Rate
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local row_sold = math.min(row_amount, remaining)
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local out_of_funds = false
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if poster ~= p_name then
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local bal = self:get_balance(poster)
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@ -1049,96 +1066,108 @@ function ex_methods.sell(self, p_name, ex_name, item_name, wear, amount, rate)
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end
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local can_afford = math.floor(bal / row_rate)
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out_of_funds = can_afford < row_sold
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row_sold = math.min(row_sold, can_afford)
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end
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if row_sold > 0 then
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local red_del_stmt
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local red_del_stmt
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if row_sold < row_amount then
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red_stmt:bind_names({
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id = row.Id,
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delta = row_sold,
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})
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red_del_stmt = red_stmt
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else -- row_sold == row_amount
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del_stmt:bind_values(row.Id)
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red_del_stmt = del_stmt
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end
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if row_sold < row_amount and not out_of_funds then
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red_stmt:bind_names({
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id = row.Id,
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delta = row_sold,
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})
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red_del_stmt = red_stmt
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else -- row_sold == row_amount or out_of_funds
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del_stmt:bind_values(row.Id)
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red_del_stmt = del_stmt
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end
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local red_del_res = red_del_stmt:step()
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red_del_stmt:reset()
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if red_del_res == sqlite3.BUSY then
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local red_del_res = red_del_stmt:step()
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red_del_stmt:reset()
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if red_del_res == sqlite3.BUSY then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, "Database Busy."
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elseif red_del_res ~= sqlite3.DONE then
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search_stmt:reset()
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sql_error(db:errmsg())
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end
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local in_succ, in_err =
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self:put_in_inbox(poster, item_name, wear, row_sold)
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if not in_succ then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, in_err
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end
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if poster ~= p_name then
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local revenue = row_sold * row_rate
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local ch_succ, ch_err = self:change_balance(poster, -revenue)
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if not ch_succ then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, "Database Busy."
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elseif red_del_res ~= sqlite3.DONE then
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search_stmt:reset()
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sql_error(db:errmsg())
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return false, ch_err
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end
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local in_succ, in_err =
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self:put_in_inbox(poster, item_name, wear, row_sold)
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if not in_succ then
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local ch_succ, ch_err = self:change_balance(p_name, revenue)
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if not ch_succ then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, in_err
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return false, ch_err
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end
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if poster ~= p_name then
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local revenue = row_sold * row_rate
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local ch_succ, ch_err = self:change_balance(poster, -revenue)
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if not ch_succ then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, ch_err
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end
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local ch_succ, ch_err = self:change_balance(p_name, revenue)
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if not ch_succ then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, ch_err
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end
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local log_succ, log_err =
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self:log(p_name .. " sold " .. row_sold .. " " ..
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item_name .. " to you. (-" .. revenue .. ")",
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poster)
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if not log_succ then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, log_err
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end
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if out_of_funds then
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local log_succ, log_err =
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self:log(p_name .. " sold " .. row_amount .. " " ..
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item_name .. " to you. (-" .. revenue .. ")",
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self:log("Insufficient funds to buy " ..
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math.min(row_amount - row_sold, remaining) ..
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" " .. item_name .. " from " .. p_name ..
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" at " .. row_rate .. "/ea.",
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poster)
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if not log_succ then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, log_err
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end
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local log_succ, log_err =
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self:log("Sold " .. row_amount .. " " .. item_name ..
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" to " .. poster .. "(+" .. revenue .. ")",
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p_name)
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if not log_succ then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, log_err
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end
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else
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local log_succ, log_err =
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self:log("Sold " .. row_amount .. " " ..
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item_name .. " to yourself.",
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p_name)
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if not log_succ then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, log_err
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end
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end
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order_book_cache(ex_name)[item_name] = nil
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remaining = remaining - row_sold
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if remaining == 0 then break end
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local log_succ, log_err =
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self:log("Sold " .. row_sold .. " " .. item_name ..
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" to " .. poster .. "(+" .. revenue .. ")",
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p_name)
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if not log_succ then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, log_err
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end
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else
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local log_succ, log_err =
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self:log("Sold " .. row_sold .. " " ..
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item_name .. " to yourself.",
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p_name)
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if not log_succ then
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search_stmt:reset()
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db:exec("ROLLBACK;")
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return false, log_err
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end
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end
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order_book_cache(ex_name)[item_name] = nil
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remaining = remaining - row_sold
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if remaining == 0 then break end
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end
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search_stmt:reset()
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