{-# LANGUAGE OverloadedStrings #-}

module Simple (
    testSimpleOnePlusOne
  , testSimpleSelect
  , testSimpleParams
  , testSimpleTime
  , testSimpleTimeFract) where

import qualified Data.Text as T
import Data.Time (UTCTime)
import Common

-- Simplest SELECT
testSimpleOnePlusOne :: TestEnv -> Test
testSimpleOnePlusOne TestEnv{..} = TestCase $ do
  rows <- query_ conn "SELECT 1+1" :: IO [Only Int]
  assertEqual "row count" 1 (length rows)
  assertEqual "value" (Only 2) (head rows)

testSimpleSelect :: TestEnv -> Test
testSimpleSelect TestEnv{..} = TestCase $ do
  execute_ conn "CREATE TABLE test1 (id INTEGER PRIMARY KEY, t TEXT)"
  execute_ conn "INSERT INTO test1 (t) VALUES ('test string')"
  rows <- query_ conn "SELECT t FROM test1" :: IO [Only String]
  assertEqual "row count" 1 (length rows)
  assertEqual "string" (Only "test string") (head rows)
  rows <- query_ conn "SELECT id,t FROM test1" :: IO [(Int, String)]
  assertEqual "int,string" (1, "test string") (head rows)
  -- Add another row
  execute_ conn "INSERT INTO test1 (t) VALUES ('test string 2')"
  rows <- query_ conn "SELECT id,t FROM test1" :: IO [(Int, String)]
  assertEqual "row count" 2 (length rows)
  assertEqual "int,string" (1, "test string") (rows !! 0)
  assertEqual "int,string" (2, "test string 2") (rows !! 1)
  [Only r] <- query_ conn "SELECT NULL" :: IO [Only (Maybe Int)]
  assertEqual "nulls" Nothing r
  [Only r] <- query_ conn "SELECT 1" :: IO [Only (Maybe Int)]
  assertEqual "nulls" (Just 1) r

testSimpleParams :: TestEnv -> Test
testSimpleParams TestEnv{..} = TestCase $ do
  execute_ conn "CREATE TABLE testparams (id INTEGER PRIMARY KEY, t TEXT)"
  execute_ conn "CREATE TABLE testparams2 (id INTEGER, t TEXT, t2 TEXT)"
  [Only i] <- query conn "SELECT ?" (Only (42 :: Int))  :: IO [Only Int]
  assertEqual "select int param" 42 i
  execute conn "INSERT INTO testparams (t) VALUES (?)" (Only ("test string" :: String))
  rows <- query conn "SELECT t FROM testparams WHERE id = ?" (Only (1 :: Int)) :: IO [Only String]
  assertEqual "row count" 1 (length rows)
  assertEqual "string" (Only "test string") (head rows)
  execute_ conn "INSERT INTO testparams (t) VALUES ('test2')"
  [Only row] <- query conn "SELECT t FROM testparams WHERE id = ?" (Only (1 :: Int)) :: IO [Only String]
  assertEqual "select params" "test string" row
  [Only row] <- query conn "SELECT t FROM testparams WHERE id = ?" (Only (2 :: Int)) :: IO [Only String]
  assertEqual "select params" "test2" row
  [Only r1, Only r2] <- query conn "SELECT t FROM testparams WHERE (id = ? OR id = ?)" (1 :: Int, 2 :: Int) :: IO [Only String]
  assertEqual "select params" "test string" r1
  assertEqual "select params" "test2" r2
  [Only i] <- query conn "SELECT ?+?" [42 :: Int, 1 :: Int] :: IO [Only Int]
  assertEqual "select int param" 43 i

testSimpleTime :: TestEnv -> Test
testSimpleTime TestEnv{..} = TestCase $ do
  let timestr = "2012-08-20 20:19:58"
      time    = read timestr :: UTCTime
  execute_ conn "CREATE TABLE time (t TIMESTAMP)"
  execute conn "INSERT INTO time (t) VALUES (?)" (Only time)
  [Only t] <- query_ conn "SELECT * FROM time" :: IO [Only UTCTime]
  assertEqual "UTCTime conv" time t
  [Only t] <- query conn "SELECT * FROM time WHERE t = ?" (Only time) :: IO [Only UTCTime]
  assertEqual "UTCTime conv2" time t
  -- Try inserting timestamp directly as a string
  execute_ conn "CREATE TABLE time2 (t TIMESTAMP)"
  execute_ conn (Query (T.concat ["INSERT INTO time2 (t) VALUES ('", T.pack timestr, "')"]))
  [Only t] <- query_ conn "SELECT * FROM time2" :: IO [Only UTCTime]
  assertEqual "UTCTime" time t
  rows <- query conn "SELECT * FROM time2 WHERE t = ?" (Only time) :: IO [Only UTCTime]
  assertEqual "should see one row result" 1 (length rows)
  assertEqual "UTCTime" time t

testSimpleTimeFract :: TestEnv -> Test
testSimpleTimeFract TestEnv{..} = TestCase $ do
  let timestr = "2012-08-17 08:00:03.256887"
      time    = read timestr :: UTCTime
  -- Try inserting timestamp directly as a string
  execute_ conn "CREATE TABLE timefract (t TIMESTAMP)"
  execute_ conn (Query (T.concat ["INSERT INTO timefract (t) VALUES ('", T.pack timestr, "')"]))
  [Only t] <- query_ conn "SELECT * FROM timefract" :: IO [Only UTCTime]
  assertEqual "UTCTime" time t
  rows <- query conn "SELECT * FROM timefract WHERE t = ?" (Only time) :: IO [Only UTCTime]
  assertEqual "should see one row result" 1 (length rows)
  assertEqual "UTCTime" time t