#include "ltm/common.h"
#include "test.h"

#include "ltm/template.h"
#include "ltm/template_internal.h"

void test_single_placeholder() {
  const char *s = "Hello, {{ world }}";

  ltm_template *template;
  TEST_CHECK(ltm_template_compile(&template, s) == ltm_err_ok);

  TEST_CHECK(template->blocks.len == 2);

  TEST_CHECK(template->blocks.arr[0].type == ltm_template_block_type_literal);
  TEST_CHECK(template->blocks.arr[0].data.ptr == s);
  TEST_CHECK(template->blocks.arr[0].data.len == 7);

  TEST_CHECK(template->blocks.arr[1].type == ltm_template_block_type_var);

  TEST_CHECK(template->names.len == 1);

  TEST_CHECK(template->names.arr[0].name.s == s + 10);
  TEST_CHECK(template->names.arr[0].name.len == 5);
  TEST_CHECK(template->names.arr[0].index == 1);
}

void test_single_placeholder_trailing() {
  const char *s = "Hello, {{ world }}!";

  ltm_template *template;
  TEST_CHECK(ltm_template_compile(&template, s) == ltm_err_ok);

  TEST_CHECK(template->blocks.len == 3);

  TEST_CHECK(template->blocks.arr[0].type == ltm_template_block_type_literal);
  TEST_CHECK(template->blocks.arr[0].data.ptr == s);
  TEST_CHECK(template->blocks.arr[0].data.len == 7);

  TEST_CHECK(template->blocks.arr[1].type == ltm_template_block_type_var);

  TEST_CHECK(template->blocks.arr[2].type == ltm_template_block_type_literal);
  TEST_CHECK(template->blocks.arr[2].data.ptr == s + 18);
  TEST_CHECK(template->blocks.arr[2].data.len == 1);

  TEST_CHECK(template->names.len == 1);

  TEST_CHECK(template->names.arr[0].name.s == s + 10);
  TEST_CHECK(template->names.arr[0].name.len == 5);
  TEST_CHECK(template->names.arr[0].index == 1);
}

void test_single_nested() {
  const char *s = "abc {{ l start }}some content {{ var }} {{ l end }}";

  ltm_template *template;
  TEST_CHECK(ltm_template_compile(&template, s) == ltm_err_ok);

  TEST_CHECK(template->names.len == 1);
  TEST_CHECK(template->names.arr[0].name.s == s + 7);
  TEST_CHECK(template->names.arr[0].name.len == 1);
  TEST_CHECK(template->names.arr[0].index == 1);

  TEST_CHECK(template->blocks.len == 2);

  TEST_CHECK(template->blocks.arr[0].type == ltm_template_block_type_literal);
  TEST_CHECK(template->blocks.arr[0].data.ptr == s);
  TEST_CHECK(template->blocks.arr[0].data.len == 4);

  TEST_CHECK(template->blocks.arr[1].type == ltm_template_block_type_nested);
  ltm_template *nested_template = template->blocks.arr[1].data.ptr;

  TEST_CHECK(nested_template->blocks.len == 3);
  TEST_CHECK(nested_template->blocks.arr[0].type == ltm_template_block_type_literal);
  TEST_CHECK(nested_template->blocks.arr[0].data.ptr == s + 17);
  TEST_CHECK(nested_template->blocks.arr[0].data.len == 13);
  TEST_CHECK(nested_template->blocks.arr[1].type == ltm_template_block_type_var);
  TEST_CHECK(nested_template->blocks.arr[2].type == ltm_template_block_type_literal);
  TEST_CHECK(nested_template->blocks.arr[2].data.ptr == s + 39);
  TEST_CHECK(nested_template->blocks.arr[2].data.len == 1);

  TEST_CHECK(nested_template->names.len == 1);
  TEST_CHECK(nested_template->names.arr[0].name.s == s + 33);
  TEST_CHECK(nested_template->names.arr[0].name.len == 3);
  TEST_CHECK(nested_template->names.arr[0].index == 1);
}

void test_unclosed_placeholder() {
  ltm_template *template;

  const char *s = "abc {{ var }";
  TEST_CHECK(ltm_template_compile(&template, s) == ltm_err_invalid_template);

  s = "abc {{ var ";
  TEST_CHECK(ltm_template_compile(&template, s) == ltm_err_invalid_template);
}

void test_unclosed_nested() {
  ltm_template *template;

  const char *s = "abc {{ var start }} {{ hello }}";
  TEST_CHECK(ltm_template_compile(&template, s) == ltm_err_invalid_template);
}

TEST_LIST = {
  { "template single placeholder", test_single_placeholder },
  { "template single placeholder trailing", test_single_placeholder_trailing },
  { "template single nested", test_single_nested },
  { "template unclosed placeholder", test_unclosed_placeholder },
  { "template unclosed nested", test_unclosed_nested },
  { NULL, NULL }
};