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(fn now []
(os.date "%Y-%m-%d %H:%M:%S"))
(fn improve-typography [text]
(var result
(-> text
(string.gsub "(\n|\r)" " ")
(string.gsub "%s+" " ")))
(let [nbsp-replaces ["на" "На" "и" "И" "в" "В" "о" "О" "с" "С" "со" "Со" "до"
"До" "для" "Для" "а" "А" "но" "Но" "на" "На" "я" "Я" "мы"
"Мы" "над" "Над" "под" "Под" "г." "Г." "ул." "Ул."
"д." "Д." "%d+"]]
(each [_ v (ipairs nbsp-replaces)]
(set result
(-> result
(string.gsub (.. "( " v ") ") "%1 ")
(string.gsub (.. "(%s" v ") ") " %1 ")
(string.gsub (.. "^(" v ") ") "%1 ")))))
result)
(fn test-improve-typography []
(assert (= (improve-typography "Я лежу на пляжу!")
"Я лежу на пляжу!"))
(assert (= (improve-typography "500 рублей мы сняли со счета!")
"500 рублей мы сняли со счета!"))
(assert (= (improve-typography "500 рублей мы
сняли со счета!")
"500 рублей мы сняли со счета!")))
(fn starts-with? [str start]
(= (string.sub str 1 (# start)) start))
(fn ends-with? [str end]
(= (string.sub str (- (# end))) end))
(fn trim-left [str pattern]
(local pattern (or pattern "%s"))
(str:match (.. "^" pattern "*(.-)$")))
(fn trim-right [str pattern]
(local pattern (or pattern "%s"))
(str:match (.. "^(.-)" pattern "*$")))
(fn trim [str pattern]
(local pattern (or pattern "%s"))
(str:match (.. "^" pattern "*(.-)" pattern "*$")))
(fn file-exists? [path]
(local f (io.open path "r"))
(and (~= f nil) (io.close f)))
(fn parse-values [val]
(assert (= (type val) "string") "val must be string")
(accumulate [result {} k v (string.gmatch val "([%w-]+)=([%w-%%]+)")]
(do
(tset result k v)
result)))
(fn handle-upload [db file description thumbnail-width]
(local description (or description ""))
;; FIXME: check mimetype if we will allow uploads from users!
(let [type (_G.must (luna.fs.mimetype file.path))
sanitized-name (-> file.name
(string.gsub "^[%./\\]+" "")
(string.gsub "[^a-zA-Z0-9-_.]" "_")
(string.gsub "%.+" "."))
final-name (.. (_G.must (luna.crypto.random-string 8)) "-" sanitized-name)
thumbnail-name (.. "static/files/" final-name "-thumbnail.jpg")
thumbnail (if thumbnail-width
(_G.must
(luna.image.create-thumbnail
file.path thumbnail-name thumbnail-width))
"")]
(_G.must
(luna.db.exec db
"INSERT INTO files(name, creation_time, type, size, description, thumbnail)
VALUES (?, ?, ?, ?, ?, ?)"
[final-name (now) type file.size description thumbnail-name]))
;; FIXME: also handle file collisions
(os.execute (.. "mv " file.path " ./static/files/" final-name))
final-name))
(fn order-id [request]
(let [cookies-header (. request.headers :Cookie)
cookies (if cookies-header (parse-values cookies-header) {})]
cookies.order))
(fn with-tx [db f]
(let [tx (_G.must (luna.db.begin db))]
(local (ok? result) (pcall f tx))
(if ok?
(do
(luna.db.commit tx)
result)
(do
(luna.db.rollback tx)
(error result)))))
(fn empty-table? [t]
(= (next t) nil))
(fn empty? [v]
(or (= v nil) (= v "")))
(fn split [str delimiter]
(assert delimiter "delimiter must be specified")
(if (empty? str)
[]
(do
(local result {})
(local len (# str))
(var cursor 1)
(var (start end) (str:find delimiter))
(while start
(when (< cursor start)
(table.insert result (str:sub cursor (- start 1))))
(set cursor (+ end 1))
(set (start end) (str:find delimiter cursor)))
(when (<= cursor len)
(table.insert result (str:sub cursor len)))
result)))
(fn concat [...]
(local res [])
(var cur 1)
(each [_ t (pairs [...])]
(each [_ v (pairs t)]
(tset res cur v)
(set cur (+ 1 cur))))
res)
(fn merge [...]
(local res [])
(each [_ t (pairs [...])]
(each [k v (pairs t)]
(tset res k v)))
res)
(fn append [t e]
(table.insert t e)
t)
(fn equal-tables? [t1 t2]
(assert (= (type t1) "table") "t1 must be a table")
(assert (= (type t2) "table") "t2 must be a table")
(if (~= (# t1) (# t2))
false
(accumulate [res true
k1 v1 (pairs t1) &until (not res)]
(and (. t2 k1) (= v1 (. t2 k1))))))
(fn basket [db order-id]
(local items
(_G.must
(luna.db.query-assoc
db
"SELECT order_lines.id,
products.name,
products.title,
products.price_per AS \"price-per\",
STRING_AGG(product_images.name, ',') AS \"images\",
order_lines.quantity
FROM order_lines
INNER JOIN products ON products.name = order_lines.product_name
LEFT JOIN product_images ON products.name = product_images.product_name
WHERE order_lines.order_id = ?
GROUP BY order_lines.id
ORDER BY product_images.position"
[order-id])))
(if (and (. items 1) (not (empty-table? (. items 1))))
(icollect [_ item (ipairs items)]
(do
(when (. item :images)
(tset item :images (split (. item :images) ",")))
item))
[]))
(fn string->number [str]
(if str
(tonumber (pick-values 1 (str:gsub "[^0-9.]" "")))
nil))
(fn authenticate-request [db request]
(let [cookies-header (. request.headers :Cookie)
cookies (if cookies-header (parse-values cookies-header) {})
session-id cookies.auth]
(if (not (empty? session-id))
(let [sessions
(_G.must
(luna.db.query-assoc
db
"SELECT id FROM auth_sessions
WHERE id = ?
AND expires_at > STRFTIME('%Y-%m-%d %H:%M:%S', DATETIME('now'))"
[session-id]))]
(< 0 (# sessions)))
false)))
{: improve-typography
: starts-with?
: ends-with?
: trim
: trim-left
: trim-right
: file-exists?
: parse-values
: order-id
: handle-upload
: with-tx
: append
: equal-tables?
: empty-table?
: split
: concat
: merge
: empty?
: now
: basket
: string->number
: authenticate-request}
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