context("Datetime formatting")

test_that("from8601 parses", {
    expect_equal(
        from8601("2015-02-12T10:28:05.632000+00:00"),
        structure(list(
            sec = 5.632, min = 28L, hour = 10L, mday = 12L, mon = 1L,
            year = 115L, wday = 4L, yday = 42L, isdst = 0L,
            gmtoff = 0L
        ),
        .Names = c(
            "sec", "min", "hour", "mday", "mon",
            "year", "wday", "yday", "isdst", "gmtoff"
        ),
        class = c("POSIXlt", "POSIXt"), tzone = "UTC"
        )
    )
    expect_equal(
        from8601("2015-02-12T10:28:05.632000"),
        structure(list(
            sec = 5.632, min = 28L, hour = 10L, mday = 12L, mon = 1L,
            year = 115L, wday = 4L, yday = 42L, isdst = 0L,
            gmtoff = 0L
        ),
        .Names = c(
            "sec", "min", "hour", "mday", "mon",
            "year", "wday", "yday", "isdst", "gmtoff"
        ),
        class = c("POSIXlt", "POSIXt"), tzone = "UTC"
        )
    )
    expect_equal(
        from8601("2015-02-12T10:28:05.632000+06:00"),
        structure(list(
            sec = 5.632, min = 28L, hour = 4L, mday = 12L, mon = 1L,
            year = 115L, wday = 4L, yday = 42L, isdst = 0L,
            gmtoff = 21600L
        ), # 6 * 60 * 60
        .Names = c(
            "sec", "min", "hour", "mday", "mon",
            "year", "wday", "yday", "isdst", "gmtoff"
        ),
        class = c("POSIXlt", "POSIXt"), tzone = "UTC"
        )
    )
})

test_that("from8601 returns Date class if given only dates", {
    expect_identical(from8601("2015-02-12"), as.Date("2015-02-12"))
    expect_identical(from8601(c("2015-02-12", NA)), as.Date(c("2015-02-12", NA)))
})

test_that("from8601 works for month & year resolution (converts to first day)", {
    expect_identical(from8601("2015-02"), as.Date("2015-02-01"))
    expect_identical(from8601(c("2015", NA)), as.Date(c("2015-01-01", NA)))
})


test_that("default date formater", {
    expect_error(
        datetimeFormater("not a resolution"),
        paste0(
            dQuote("resolution"), " is invalid. Valid values are ",
            serialPaste(c("Y", "Q", "3M", "M", "W", "D", "h", "m", "s", "ms"),
                collapse = "or"
            )
        )
    )
    expect_equal(datetimeFormater("Y"), "%Y")
    expect_equal(datetimeFormater("Q"), "%Y-%m-%d")
    expect_equal(datetimeFormater("M"), "%Y-%m")
    expect_equal(datetimeFormater("W"), "%Y W%W")
    expect_equal(datetimeFormater("D"), "%Y-%m-%d")
    expect_equal(datetimeFormater("h"), "%Y-%m-%d %H:00")
    expect_equal(datetimeFormater("m"), "%Y-%m-%d %H:%M")
    expect_equal(datetimeFormater("s"), "%Y-%m-%d %H:%M:%S")
    expect_equal(datetimeFormater("ms"), "%Y-%m-%d %H:%M:%S.%f")
    expect_equal(datetimeFormater(NULL), "%Y-%m-%d %H:%M:%S")
})

test_that("rollup CrunchExpr from zcl variable", {
    x <- list(variable = "test") ## "ZCL"
    expect_is(rollup(x), "CrunchExpr")
    expect_identical(
        zcl(rollup(x)),
        list(`function` = "rollup", args = list(
            list(variable = "test"),
            list(value = NULL)
        ))
    )

    expect_is(rollup(x, resolution = "Y"), "CrunchExpr")
    expect_identical(
        zcl(rollup(x, resolution = "Y")),
        list(`function` = "rollup", args = list(
            list(variable = "test"),
            list(value = "Y")
        ))
    )
})

test_that("rollup resolution validation", {
    expect_error(
        rollup("a", resolution = "Invalid"),
        " is invalid. Valid values are "
    )
    expect_error(
        rollup("a", resolution = 42),
        " is invalid. Valid values are "
    )
})

with_mock_crunch({
    ds <- cachedLoadDataset("test ds")
    v <- ds$starttime

    test_that("rollup CrunchExpr from DatetimeVariable", {
        expect_is(rollup(v), "CrunchExpr")
        expect_identical(
            zcl(rollup(v)),
            list(
                `function` = "rollup",
                args = list(
                    list(variable = "https://app.crunch.io/api/datasets/1/variables/starttime/"),
                    list(value = "s")
                )
            )
        )
        expect_is(rollup(v, resolution = "Y"), "CrunchExpr")
        expect_identical(
            zcl(rollup(v, resolution = "Y")),
            list(
                `function` = "rollup",
                args = list(
                    list(variable = "https://app.crunch.io/api/datasets/1/variables/starttime/"),
                    list(value = "Y")
                )
            )
        )
        expect_is(rollup(v, resolution = NULL), "CrunchExpr")
        expect_identical(
            zcl(rollup(v, resolution = NULL)),
            list(
                `function` = "rollup",
                args = list(
                    list(variable = "https://app.crunch.io/api/datasets/1/variables/starttime/"),
                    list(value = NULL)
                )
            )
        )
    })

    test_that("resolution functions generate expected requests", {
        expect_identical(resolution(ds$starttime), "D")
        expect_PATCH(
            resolution(ds$starttime) <- "M",
            "https://app.crunch.io/api/datasets/1/variables/starttime/",
            '{"resolution":"M"}'
        )
        expect_error(
            resolution(ds$starttime) <- "invalid_rollup",
            paste0(
                dQuote("resolution"),
                " is invalid. Valid values are Y, Q, 3M, M, W, D, h, m, s, or ms"
            )
        )
        expect_no_request(resolution(ds$starttime) <- "D")
    })
    test_that("Can't set a NULL resolution", {
        expect_error(
            resolution(ds$starttime) <- NULL,
            "resolution cannot be NULL"
        )
    })

    test_that("rollupResolution functions generate expected requests", {
        expect_identical(rollupResolution(ds$starttime), "s")
        expect_PATCH(
            rollupResolution(ds$starttime) <- "M",
            "https://app.crunch.io/api/datasets/1/variables/starttime/",
            '{"view":{"rollup_resolution":"M"}}'
        )
        expect_error(
            rollupResolution(ds$starttime) <- "invalid_rollup",
            paste0(
                dQuote("resolution"),
                " is invalid. Valid values are Y, Q, 3M, M, W, D, h, m, s, or ms"
            )
        )
    })
})