0.9.6 >> 0.9.7

- The code base simplified.
- The package level constants have been placed into a standalone file.
- These dependency (Imports) packages removed from the code: `curl`, `data.table`, `fs`, `tidyselect`, `utf8`
- The sapply() calls have been removed from some unit tests.
- The global assignment operators have been removed from the code.
- The .github/CONTRIBUTING.md file has been created and added.
- The DESCRIPTION document has been updated.
- A contributor guide has been added.

Author: sbudai

.Rbuildignore

@@ -6,6 +6,7 @@ sandbox/
 ^LICENSE\.md$
 ^\.github$
 .claude/
+.opencode/
 ^doc$
 ^Meta$
 ^_pkgdown\.yml$

.github/CONTRIBUTING.md

@@ -0,0 +1,54 @@
+# Contributing to entsoeapi
+
+Thank you for taking the time to contribute! This document outlines the process for reporting issues and submitting code changes.
+
+## Code of Conduct
+
+Please review and follow our [Code of Conduct](CODE_OF_CONDUCT.md).
+
+## Reporting bugs
+
+Use the [bug report template](https://github.com/krose/entsoeapi/issues/new?template=bug_report.md) and include:
+
+-   A minimal reproducible example (ideally using `reprex::reprex()`)
+-   The ENTSO-E API endpoint involved and the query parameters used
+-   Your OS, R version, and `entsoeapi` version (`packageVersion("entsoeapi")`)
+
+Do **not** include your ENTSO-E security token in the report.
+
+## Requesting features
+
+Open a [feature request](https://github.com/krose/entsoeapi/issues/new?template=feature_request.md) describing the ENTSO-E endpoint or data domain you would like covered and a brief use case.
+
+## Submitting a pull request
+
+1.  Fork the repository and create a branch from `main`.
+
+2.  Install development dependencies: `devtools::install_dev_deps()`.
+
+3.  Make your changes. Keep each PR focused on a single concern.
+
+4.  Add or update tests — the package targets 100% test coverage.
+
+5.  Run the full check suite locally before pushing:
+
+    ``` r
+    lintr::lint_package()
+    devtools::document()
+    devtools::test()
+    devtools::check()
+    covr::package_coverage()
+    ```
+
+6.  Open the pull request against `master` and describe what changed and why.
+
+### Conventions
+
+-   Follow the existing code style (snake_case, `cli::` for user-facing messages, `checkmate::` for input validation).
+-   New user-facing functions must have `@examplesIf` blocks (see existing functions for the pattern).
+-   All exported functions need a `@return` tag in their roxygen documentation.
+-   ENTSO-E security tokens must never appear in code, tests, or fixtures — use the `ENTSOE_PAT` environment variable.
+
+## Questions
+
+For general usage questions, open a [GitHub Discussion](https://github.com/krose/entsoeapi/discussions) rather than an issue.

.gitignore

@@ -4,6 +4,7 @@
 sandbox/
 test-coverage.yml
 .claude/
+.opencode/
 inst/doc
 /doc/
 /Meta/

.urlchecker

@@ -1,7 +1,7 @@
 Package: entsoeapi
 Type: Package
 Title: R Client for the 'ENTSO-E' Transparency Platform API
-Version: 0.9.6
+Version: 0.9.7
 Authors@R: c(person("Kenneth", "Rose",  role=c("aut", "cph"), email="kennethrose82@gmail.com"),
              person("Sándor",  "Budai", role=c("aut", "cre", "cph"), email="sbudai.ga@gmail.com"))
 Description: Provides a standardized R client for the 'ENTSO-E' (European Network of
@@ -15,19 +15,14 @@ Imports:
     cachem,
     cli,
     checkmate,
-    curl,
-    data.table,
     dplyr,
-    fs,
     httr2,
     lubridate,
     purrr,
     snakecase,
     stringr,
     tibble,
     tidyr,
-    tidyselect,
-    utf8,
     utils,
     xml2,
     xmlconvert
@@ -46,9 +41,10 @@ Suggests:
     ggplot2
 VignetteBuilder: knitr
 Config/testthat/edition: 3
-Collate: 
+Collate:
     'entsoeapi-package.R'
     'data.R'
+    'constants.R'
     'utils.R'
     'en_helpers.R'
     'en_market.R'

DESCRIPTION

@@ -1,4 +1,21 @@
-# entsoeapi v0.9.6 (2026-03-12)
+# entsoeapi v0.9.7 (2026-03-17)
+
+## New functionality
+
+-   None.
+
+## Miscellaneous
+
+-   The code base simplified.
+-   The package level constants have been placed into a standalone file.
+-   These dependency (Imports) packages removed from the code: `curl`, `data.table`, `fs`, `tidyselect`, `utf8`
+-   The sapply() calls have been removed from some unit tests.
+-   The global assignment operators have been removed from the code.
+-   The .github/CONTRIBUTING.md file has been created and added.
+-   The DESCRIPTION document has been updated.
+-   A contributor guide has been added.
+
+# entsoeapi v0.9.6 (2026-03-12),
 
 ## New functionality
 
@@ -11,7 +28,7 @@
 -   Across all R files @examples blocks replaced by @examplesIf blocks — since they require an ENTSOE_PAT env var that isn't available in CI.
 -   @return section has been added to each exported function.
 -   The cran-comments.md has been created and has been added to .Rbuildignore.
--   the .urlchecker config file has been created and has been added to .Rbuildignore.
+-   The .urlchecker config file has been created and has been added to .Rbuildignore.
 -   The DESCRIPTION and the LICENSE documents have been updated.
 
 # entsoeapi v0.9.5.1 (2026-03-09)

NEWS.md

@@ -0,0 +1,9 @@
+.api_scheme <- "https://"
+.api_domain <- "web-api.tp.entsoe.eu/"
+.api_name <- "api?"
+.req_timeout <- 60
+.max_age <- 3600
+possible_eic_chars <- stats::setNames(
+  object = 0L:36L,
+  nm     = c(as.character(0:9), LETTERS, "-")
+)

R/constants.R

@@ -401,10 +401,9 @@ gen_per_gen_unit <- function(
   if (is.null(gen_type)) {
     par_matrix <- par_matrix |>
       dplyr::mutate(
-        periodEnd = data.table::shift(
+        periodEnd = dplyr::lead(
           x = periodStart,
-          type = "lead",
-          fill = as.POSIXct(
+          default = as.POSIXct(
             x = period_end,
             format = "%Y%m%d%H%M",
             tz = "UTC"
@@ -415,10 +414,9 @@ gen_per_gen_unit <- function(
     par_matrix <- par_matrix |>
       dplyr::group_by(psrType) |>
       dplyr::mutate(
-        periodEnd = data.table::shift(
+        periodEnd = dplyr::lead(
           x = periodStart,
-          type = "lead",
-          fill = as.POSIXct(
+          default = as.POSIXct(
             x = period_end,
             format = "%Y%m%d%H%M",
             tz = "UTC"