skip_if_not_installed("knitr")
skip_if_not_installed("rmarkdown")
skip_without_pandoc()
require_temp_artefacts_dir()


oo_al <- options("huxtable.autolabel" = FALSE)


teardown({
  options(oo_al)
  if (dir.exists("libs")) try(unlink("libs", recursive = TRUE))
})


validate_markdown <- function(md_string) {
  on.exit({
    try(file.remove(tf), silent = TRUE)
    try(file.remove(outfile), silent = TRUE)
  })

  tf <- tempfile(
          pattern = "markdown-example",
          fileext = ".md",
          tmpdir = "temp-artefacts"
        )
  cat(md_string, file = tf)

  expect_silent(
    outfile  <- rmarkdown::render(tf,
                  output_format     = rmarkdown::html_document(
                                        pandoc_args = c("--metadata",
                                          "title=\"Avoid warnings\""
                                        )
                                      ),
                  output_file       = NULL,
                  output_dir        = "temp-artefacts",
                  intermediates_dir = "temp-artefacts",
                  clean             = TRUE,
                  quiet             = TRUE
                )
  )
}


test_render <- function(path, format, output_dir = "temp-artefacts") {
  output <- ""
  force(output_dir)
  oo <- options(huxtable.latex_use_fontspec = FALSE)
  on.exit({
    options(oo)
    if (file.exists(output)) try(file.remove(output), silent = TRUE)
  })
  expect_error(output <- rmarkdown::render(path,
          output_format     = format,
          quiet             = TRUE,
          output_dir        = output_dir,
          intermediates_dir = "temp-artefacts"
        ),
    regexp = NA,
    info   = list(path = path, format = format)
  )
}

# for some reason if this comes after the knitting to PDF files, it crashes on the third md
# ... knitr somehow ends up with a huge vector of information
test_that("to_md produces valid markdown", {
  ht <- hux(a = 1:5, b = 1:5)
  md <- to_md(ht)
  validate_markdown(md)
  ht <- set_all_borders(ht, 1)
  md <- to_md(ht)
  validate_markdown(md)
  ht <- set_caption(ht, "Some caption")
  md <- to_md(ht)
  validate_markdown(md)
  expect_match(md, "Some caption", fixed = TRUE)
})


test_that("Can knit .Rhtml files to HTML", {
  in_files <- "knitr-HTML-tester.Rhtml"
  output_files <- paste0(sub("\\.Rhtml", "", in_files), ".html")
  output_files <- file.path("temp-artefacts", output_files)
  on.exit(try(file.remove(output_files), silent = TRUE))
  for (i in seq_along(in_files)) {
    expect_error(
      output_files[i] <- knitr::knit(in_files[i], output = output_files[i],
            quiet = TRUE),
      regexp = NA
    )
    expect_true(file.exists(output_files[i]))
  }
})


test_that("guess_knitr_output_format() gets it right", {
  skip_on_cran()
  out <- character(0)
  on.exit({
    lapply(out, function (x) {
      if (file.exists(x)) try(file.remove(x), silent = TRUE)
    })
  })
  expect_silent(out[1] <- knitr::knit("guess-output-format-test.Rhtml",
        quiet = TRUE))
  expect_silent(out[2] <- knitr::knit("guess-output-format-test.Rnw",
        quiet = TRUE))

  test_render("guess-output-format-test-Rmd-html.Rmd", "html_document")
  test_render("guess-output-format-test-Rmd-pdf.Rmd", "pdf_document")

})


test_that("Four spaces does not cause <pre><code> markup", {
  output <- rmarkdown::render("fourspace-html-test.Rmd",
        output_dir = "temp-artefacts", quiet = TRUE)
  on.exit(if (exists("output")) try(file.remove(output), silent = TRUE))
  lines <- readLines(output)
  expect_false(any(grepl("findme&lt;/td&gt;", lines)))
})


test_that("Row heights do not screw up LaTeX multicol", {
  skip_on_cran()
  skip_on_travis() # temporary

  test_render("rowheight-multicol-test.Rmd", NULL)
})


test_that("echo = TRUE does not cause option clash", {
  skip_on_cran()
  test_render("echo-true-latex-test.Rmd", NULL)
})


test_that("Various Rmd files render without errors", {
  skip_on_cran()

  test_render_all <- function (path) {
    test_render(path, "pdf_document")
    test_render(path, "html_document")
  }

  rmd_paths <- c("table-tester-2.Rmd")
  for (path in rmd_paths) {
    test_render_all(path)
  }
})


test_that("Bookdown files", {
  skip_on_cran()
  skip_if_not_installed("dplyr")
  skip_if_not_installed("bookdown")
  test_render("bookdown-test.Rmd", "bookdown::pdf_book")
  # output_dir = "." works around a bug:
  test_render("bookdown-test.Rmd", "bookdown::html_book", output_dir = ".")
})


test_that("Word files", {
  skip_if_not_installed("flextable")
  skip_if_not(rmarkdown::pandoc_available("2.0.0"))
  test_render("word-test.Rmd", "word_document")
})


test_that("quarto files", {
  skip_if_not_installed("quarto")
  qp <- quarto::quarto_path()
  skip_if_not(is.character(qp))

  on.exit({
    for (f in c("quarto-test-out.pdf", "quarto-test-out.html"))
    if (file.exists(f)) try(file.remove(f), silent = TRUE)
    if (file.exists("quarto-test_files")) {
      try(unlink("quarto-test_files", recursive = TRUE), silent = TRUE)
    }
  })

  expect_silent(
    quarto::quarto_render("quarto-test.qmd", output_format = "pdf",
                            output_file = "quarto-test-out.pdf",
                            execute_dir = "temp-artefacts",
                            debug = FALSE, quiet = TRUE)
  )

  expect_silent(
    quarto::quarto_render("quarto-test.qmd", output_format = "html",
                            output_file = "quarto-test-out.html",
                            execute_dir = "temp-artefacts",
                            debug = FALSE, quiet = TRUE)
  )

})


test_that("Works with fontspec", {
  skip_on_cran()
  skip_on_os("linux") # no Arial
  oo <- options("huxtable.latex_use_fontspec")
  on.exit(options(oo))
  test_render("fontspec-test.Rmd", "pdf_document")
})


test_that("huxtable.long_minus", {
  oo <- options(huxtable.long_minus = TRUE)
  on.exit(options(oo))

  ht <- hux(c("1", "-1.5"), c("1e-3", "1e3"), c("1", "-1e-3"))
  expect_silent(to_screen(ht))
  expect_silent(to_md(ht))

  expect_silent(quick_html(ht,
        file = file.path("temp-artefacts", "long-minus-test.html"), open = FALSE))
  expect_silent(quick_latex(ht,
        file = file.path("temp-artefacts", "long-minus-test.tex"), open = FALSE))
  expect_silent(quick_rtf(ht,
        file = file.path("temp-artefacts", "long-minus-test.rtf"), open = FALSE))

  skip_if_not_installed("openxlsx")
  expect_silent(quick_xlsx(ht,
        file = file.path("temp-artefacts", "long-minus-test.xlsx"), open = FALSE))

  skip_if_not_installed("flextable")
  expect_silent(quick_docx(ht,
        file = file.path("temp-artefacts", "long-minus-test.docx"), open = FALSE))
  expect_silent(quick_pptx(ht,
        file = file.path("temp-artefacts", "long-minus-test.pptx"), open = FALSE))

  skip_on_cran()
  expect_silent(quick_pdf(ht,
        file = file.path("temp-artefacts", "long-minus-test.pdf"), open = FALSE))
})



test_that("huxtable.latex_siunitx_align", {
  oo <- options(huxtable.latex_siunitx_align = TRUE)
  on.exit(options(oo))

  ht <- hux(c("1", "-1.5"), c("1.2e-3", "1.33e3"), c("1", "-1e-3"))
  expect_silent(to_screen(ht))
  expect_silent(to_md(ht))

  skip_on_cran()
  test_render("siunitx-test.Rmd", "pdf_document")
})