payment: note that Stripe has instituted an additional 1% fee for non-US cards
[hcoop/portal.git] / money.sml
index 6372fd5..55330c2 100644 (file)
--- a/money.sml
+++ b/money.sml
@@ -86,7 +86,7 @@ val mkUserRow' =
      | row => Init.rowError ("listUsers", row)
 
 fun listUsers trn =
-    C.map (getDb ()) mkUserRow' ($`SELECT trn, id, name, rname, bal, joined, app
+    C.map (getDb ()) mkUserRow' ($`SELECT trn, id, name, rname, bal, joined, app, shares, paypal, checkout
                                   FROM WebUser LEFT OUTER JOIN Charge ON usr = id AND trn = ^(C.intToSql trn)
                                   ORDER BY name`)
 
@@ -213,27 +213,219 @@ fun addHostingCharges {trn, cutoff, cost, usage} =
 
        val (umap, amount) = walkNvs (nvs, SM.empty, #amount tran)
 
-       val payers = Group.groupMembers paying
-       val even = amount / real (length payers)
+       val db = getDb ()
+
+       val shares =
+           case C.oneRow db ($`SELECT SUM(shares)
+                                 FROM WebUser JOIN Membership ON usr = WebUser.id AND grp = ^(C.intToSql paying)`) of
+               [n] => C.intFromSql n
+             | row => Init.rowError ("Bad addHostingCharges share count result", row)
 
-       fun doUser (usr : Init.user, umap)  =
+       val even = amount / real shares
+
+       fun doUser ([uid, uname, shares], umap)  =
            let
+               val uid = C.intFromSql uid
+               val uname = C.stringFromSql uname
+               val shares = C.intFromSql shares
+
                val (charge, umap) =
-                   case SM.find (umap, #name usr) of
-                       NONE => (even, umap)
-                     | SOME extra => (even - extra, #1 (SM.remove (umap, #name usr)))
+                   case SM.find (umap, uname) of
+                       NONE => (even * real shares, umap)
+                     | SOME extra => (even * real shares - extra, #1 (SM.remove (umap, uname)))
            in
-               addCharge {trn = trn, usr = #id usr, amount = charge};
+               addCharge {trn = trn, usr = uid, amount = charge};
                umap
            end
+
+       val _ = if SM.numItems (C.fold db doUser umap
+                                      ($`SELECT id, name, shares
+                                           FROM WebUser JOIN Membership ON usr = WebUser.id AND grp = ^(C.intToSql paying)`))
+                  = 0 then
+                   applyCharges trn
+               else
+                   raise Fail "Usage description contains an unknown username"
+
+       val usageFile = TextIO.openOut (Init.scratchDir ^ "/usage/" ^ Int.toString trn)
     in
-       if SM.numItems (foldl doUser umap payers) = 0 then
-           applyCharges trn
-       else
-           raise Fail "Usage description contains an unknown username"
+       TextIO.output (usageFile, usage);
+       TextIO.closeOut usageFile
     end
 
 fun equalizeBalances () =
     ignore (C.dml (getDb ()) ($`UPDATE Balance SET amount = (SELECT SUM(amount) FROM Charge JOIN WebUser ON usr = WebUser.id WHERE bal = Balance.id)`))
 
-end
\ No newline at end of file
+fun lookupHostingUsage trn =
+    let
+       val usageFile = TextIO.openIn (Init.scratchDir ^ "/usage/" ^ Int.toString trn)
+
+       fun loop acc =
+           case TextIO.inputLine usageFile of
+               NONE => String.concat (List.rev acc)
+             | SOME line => loop (line :: acc)
+    in
+       SOME (loop [])
+       before TextIO.closeIn usageFile
+    end handle _ => NONE
+
+fun costBase amt =
+    case C.oneRow (getDb ()) ($`SELECT ^(C.realToSql amt) / SUM(shares) FROM WebUserPaying`) of
+       [share] => C.realFromSql share
+      | row => Init.rowError ("Bad costBase result", row)
+
+val monthlyCost = 900.0
+val graceMonths = 1
+
+val baseDues = 7.0
+
+fun delinquentPledgers () =
+    let
+       fun makeRow [id, name, shares, amount] = {id = C.intFromSql id, name = C.stringFromSql name,
+                                                 shares = C.intFromSql shares, balance = C.realFromSql amount}
+         | makeRow row = Init.rowError ("Bad delinquentPledgers", row)
+    in
+       C.map (getDb ()) makeRow ($`SELECT WebUserPaying.id, WebUserPaying.name, shares, amount
+                                   FROM WebUserPaying JOIN Balance ON Balance.id = bal
+                                   WHERE amount < shares * ^(C.realToSql baseDues) * ^(C.intToSql graceMonths)
+                                     AND shares > 1
+                                   ORDER BY name`)
+    end
+
+fun resetPledges ids =
+    ignore (C.dml (getDb ()) ($`UPDATE WebUser SET shares = 1 WHERE id IN (^(String.concatWith ", " (List.map C.intToSql ids)))`))
+
+fun freezeworthyPledgers () =
+    let
+       fun makeRow [id, name, amount, j] = {id = C.intFromSql id, name = C.stringFromSql name,
+                                            balance = C.realFromSql amount, joinedThisMonth = C.boolFromSql j}
+         | makeRow row = Init.rowError ("Bad freezeworthyPledgers", row)
+    in
+       C.map (getDb ()) makeRow ($`SELECT WebUserPaying.id, WebUserPaying.name, amount, CURRENT_TIMESTAMP - joined < INTERVAL '1 month'
+                                   FROM WebUserPaying JOIN Balance ON Balance.id = bal
+                                   WHERE amount >= ^(C.realToSql baseDues) * ^(C.intToSql graceMonths)
+                                     AND amount < ^(C.realToSql baseDues) * ^(C.intToSql (graceMonths + 1))
+                                   ORDER BY name`)
+    end
+
+fun bootworthyPledgers () =
+    let
+       fun makeRow [id, name, amount, j] = {id = C.intFromSql id, name = C.stringFromSql name,
+                                            balance = C.realFromSql amount, joinedThisMonth = C.boolFromSql j}
+         | makeRow row = Init.rowError ("Bad bootworthyPledgers", row)
+    in
+       C.map (getDb ()) makeRow ($`SELECT WebUserPaying.id, WebUserPaying.name, amount, CURRENT_TIMESTAMP - joined < INTERVAL '1 month'
+                                   FROM WebUserPaying JOIN Balance ON Balance.id = bal
+                                   WHERE amount < ^(C.realToSql baseDues) * ^(C.intToSql graceMonths)
+                                   ORDER BY name`)
+    end
+
+fun billDues {descr, base, date} =
+    let
+       val db = getDb ()
+       val paying =
+           case Group.groupNameToId "paying" of
+               NONE => raise Fail "No 'paying' group"
+             | SOME id => id
+
+       val shares =
+           case C.oneRow db ($`SELECT SUM(shares)
+                                 FROM WebUser JOIN Membership ON usr = WebUser.id AND grp = ^(C.intToSql paying)`) of
+               [n] => C.intFromSql n
+             | row => Init.rowError ("Bad addHostingCharges share count result", row)
+
+       val total = real shares * base
+
+       val give = addTransaction (descr, ~total, date)
+
+       fun doUser [uid, shares]  =
+           let
+               val uid = C.intFromSql uid
+               val shares = C.intFromSql shares
+           in
+               addCharge {trn = give, usr = uid, amount = ~(base * real shares)}
+           end
+         | doUser r = Init.rowError ("Bad billDues/doUser row", r)
+
+       val receive = addTransaction (descr, total, date)
+
+       val hcoop = valOf (Init.userNameToId "hcoop")
+    in
+       C.app db doUser ($`SELECT id, shares
+                          FROM WebUser JOIN Membership ON usr = WebUser.id AND grp = ^(C.intToSql paying)`);
+       applyCharges give;
+       
+       addCharge {trn = receive, usr = hcoop, amount = total};
+       applyCharges receive
+    end
+
+(* Stripe *)
+
+type stripePayment = {charge_id : string, webuser_id : int, card_name : string, paid_on : string, gross_cents : int, fee_cents : int, net : real}
+
+fun mkStripeRow [charge_id, webuser_id, name, paid_on, gross, fee] =
+    {charge_id = C.stringFromSql charge_id, webuser_id = C.intFromSql webuser_id,
+     card_name = C.stringFromSql name, paid_on = C.stringFromSql paid_on, 
+     gross_cents = C.intFromSql gross, fee_cents = C.intFromSql fee,  net = real (C.intFromSql gross - C.intFromSql fee) / 100.0 }
+    | mkStripeRow row = Init.rowError ("stripe_payment", row)
+
+fun listUserPendingStripePayments uid =
+    C.map (getDb ()) mkStripeRow ($`SELECT charge_id, webuser_id, card_name, paid_on, gross, fee FROM stripe_payment
+                                    WHERE webuser_id = ^(C.intToSql uid)
+                                    AND charge_id NOT IN (SELECT stripe_charge_id FROM stripe_handled)
+                                    ORDER BY paid_on DESC`)
+
+fun listAllPendingStripePayments _ =
+    C.map (getDb ()) mkStripeRow ($`SELECT charge_id, webuser_id, card_name, paid_on, gross, fee FROM stripe_payment
+                                    WHERE charge_id NOT IN (SELECT stripe_charge_id FROM stripe_handled)
+                                    ORDER BY paid_on DESC`)
+
+fun lookupStripePayment id =
+    let
+       val c = getDb ()
+    in
+       (case C.oneOrNoRows c ($`SELECT charge_id, webuser_id, card_name, paid_on, gross, fee FROM stripe_payment WHERE charge_id = ^(C.stringToSql id)`) of
+            NONE => raise Fail "Stripe Payment Not Found"
+          | SOME r => mkStripeRow r)
+    end
+
+(* Not Used *)
+val stripeNotify : stripePayment -> bool =
+fn pmt =>
+    let
+       val user = Init.lookupUser (#webuser_id pmt)
+       val mail = Mail.mopen ()
+    in
+       Mail.mwrite (mail, "From: Hcoop Support System <support");
+       Mail.mwrite (mail, emailSuffix);
+       Mail.mwrite (mail, ">\nTo: payment");
+       Mail.mwrite (mail, emailSuffix);
+       Mail.mwrite (mail, "\n");
+       Mail.mwrite (mail, "Subject: Stripe Payment Received");
+       Mail.mwrite (mail, "\n\n");
+
+       Mail.mwrite (mail, "A member has paid us via Stripe. Visit the money page to process the payment.");
+       Mail.mwrite (mail, "Member: ");
+       Mail.mwrite (mail, #name user);
+       Mail.mwrite (mail, "\n");
+       Mail.mwrite (mail, "Amount (after fees): ");
+       Mail.mwrite (mail, Real.toString (#net pmt));
+       Mail.mwrite (mail, "\n\n");
+
+       OS.Process.isSuccess (Mail.mclose mail)
+    end
+
+val applyStripePayment : stripePayment -> int = 
+ fn pmt =>
+    let
+       val _ = Group.requireGroupName "money";
+       val amount = #net pmt;
+       val txid = addTransaction ("Stripe", amount, #paid_on pmt)
+    in
+       addCharge {trn = txid, usr = #webuser_id pmt, amount = amount};
+       applyCharges txid;
+       C.dml (getDb ()) ($`INSERT INTO stripe_processed (stripe_charge_id, transaction_id)
+                                  VALUES (^(C.stringToSql (#charge_id pmt)), ^(C.intToSql txid))`);
+       txid
+    end
+end
+