Commit | Line | Data |
---|---|---|
208e2cbc AC |
1 | structure Init :> INIT = |
2 | struct | |
3 | ||
4 | open Util Sql | |
5 | structure C = PgClient | |
6 | ||
7 | exception Access of string | |
8 | ||
9 | fun conn () = C.conn "dbname='hcoop'" | |
10 | val close = C.close | |
11 | ||
12 | type user = {id : int, name : string, rname : string, bal : int, joined : C.timestamp} | |
13 | ||
14 | val db = ref (NONE : C.conn option) | |
15 | val user = ref (NONE : user option) | |
16 | ||
17 | fun getDb () = valOf (!db) | |
18 | ||
19 | fun mkUserRow [id, name, rname, bal, joined] = | |
20 | {id = C.intFromSql id, name = C.stringFromSql name, rname = C.stringFromSql rname, | |
21 | bal = C.intFromSql bal, joined = C.timestampFromSql joined} | |
22 | | mkUserRow row = raise Fail ("Bad user row : " ^ makeSet id row) | |
23 | ||
24 | fun init () = | |
25 | let | |
26 | val c = conn () | |
27 | in | |
28 | C.dml c "BEGIN"; | |
29 | case Web.getCgi "REMOTE_USER" of | |
30 | NONE => raise Fail "Not logged in" | |
31 | | SOME name => | |
32 | (case C.oneOrNoRows c ($`SELECT id, name, rname, bal, joined | |
33 | FROM WebUser | |
34 | WHERE name=^(C.stringToSql name)`) of | |
35 | NONE => raise Fail "User not found" | |
36 | | SOME r => user := SOME (mkUserRow r)); | |
37 | db := SOME c | |
38 | end | |
39 | ||
40 | fun done () = | |
41 | let | |
42 | val db = getDb () | |
43 | in | |
44 | C.dml db "COMMIT"; | |
45 | close db | |
46 | end | |
47 | ||
48 | fun getUser () = valOf (!user) | |
49 | fun getUserId () = #id (getUser ()) | |
50 | fun getUserName () = #name (getUser ()) | |
51 | ||
52 | fun lookupUser id = | |
53 | mkUserRow (C.oneRow (getDb ()) ($`SELECT id, name, rname, bal, joined | |
54 | FROM WebUser | |
55 | WHERE id = ^(C.intToSql id)`)) | |
56 | ||
57 | fun listUsers () = | |
58 | C.map (getDb ()) mkUserRow ($`SELECT id, name, rname, bal, joined | |
59 | FROM WebUser | |
60 | ORDER BY name`) | |
61 | ||
62 | fun nextSeq (db, seq) = | |
63 | case C.oneRow db ($`SELECT nextval('^(seq)')`) of | |
64 | [id] => id | |
65 | | _ => raise Fail "Bad next sequence val" | |
66 | ||
67 | fun addUser (name, rname, bal) = | |
68 | let | |
69 | val db = getDb () | |
70 | val id = nextSeq (db, "WebUserSeq") | |
71 | in | |
72 | C.dml db ($`INSERT INTO WebUser (id, name, rname, bal, joined) | |
73 | VALUES (^id, ^(C.stringToSql name), ^(C.stringToSql rname), ^(C.intToSql bal), CURRENT_TIMESTAMP)`); | |
74 | C.intFromSql id | |
75 | end | |
76 | ||
77 | fun modUser (user : user) = | |
78 | let | |
79 | val db = getDb () | |
80 | in | |
81 | ignore (C.dml db ($`UPDATE WebUser SET | |
82 | name = ^(C.stringToSql (#name user)), rname = ^(C.stringToSql (#rname user)), | |
83 | bal = ^(C.intToSql (#bal user)) | |
84 | WHERE id = ^(C.intToSql (#id user))`)) | |
85 | end | |
86 | ||
87 | fun deleteUser id = | |
88 | C.dml (getDb ()) ($`DELETE FROM WebUser WHERE id = ^(C.intToSql id)`) | |
89 | ||
90 | fun validUsername name = | |
91 | size name <= 10 | |
92 | andalso CharVector.all Char.isAlpha name | |
93 | ||
94 | fun userNameToId name = | |
95 | case C.oneOrNoRows (getDb ()) ($`SELECT id FROM WebUser WHERE name = ^(C.stringToSql name)`) of | |
96 | SOME [id] => SOME (C.intFromSql id) | |
97 | | _ => NONE | |
98 | ||
99 | end |