Set `$CACHE_FILE` in `preflight()`

We had initialised the `$CACHE_FILE` variable at the start of the script,
but because at that point `$GITHUB_OWNER_REPO` is empty, the cache file
just ends up getting called ".json".

In order to get the name we want, we need to wait until the
`$GITHUB_OWNER_REPO` variable is initialised by the command line
argument.

Initialise `$CACHE_FILE` in `preflight()` because it makes sense to put
it in that kind of setup function. Move `preflight()` after
`parse_arguments()` to ensure the program variables (including
`$GITHUB_OWNER_REPO`) are properly validated and initialised before
running setup code.

1 files changed, 4 insertions, 2 deletions

diff --git a/redprine b/redprine
index 8580479..d02864e 100755
--- a/redprine
+++ b/redprine
@@ -17,7 +17,7 @@ REDMINE_JSON_PARAMS=''
 
 XDG_DATA_HOME=${XDG_DATA_HOME:-"${HOME}/.local/share"}
 REDPRINE_DATA_DIR=${REDPRINE_DATA_DIR:-"${XDG_DATA_HOME}/redprine"}
-CACHE_FILE="${REDPRINE_DATA_DIR}/${GITHUB_OWNER_REPO/\//--}.json"
+CACHE_FILE=''
 
 CACHE_ONLY=0
 
@@ -207,6 +207,8 @@ function exit_with_error () {
 function preflight () {
 	mkdir -p "$REDPRINE_DATA_DIR"
 
+	CACHE_FILE="${REDPRINE_DATA_DIR}/${GITHUB_OWNER_REPO/\//--}.json"
+
 	if [ ! -f "$CACHE_FILE" ]; then
 		echo '[]' > "$CACHE_FILE"
 	fi
@@ -333,6 +335,6 @@ function parse_arguments () {
 }
 
 
-preflight
 parse_arguments "$@"
+preflight
 main