attachments: link/unlink from the TUI, multi-voucher linksv0.1.29

The voucher detail can attach a file to an existing voucher (^F) and
the underlag picker (f) can remove a link (d, confirmed). The Underlag
inbox links a highlighted item to a voucher picked from a list (k).

attachment.link and attachment.unlink are new write commands (dry-run,
audited); unlinked files return to the inbox. The same content may now
link to several vouchers — only the same voucher/attachment pair is a
CONFLICT, matching the table's primary key.

1 files changed, 68 insertions, 0 deletions

diff --git a/tests/test_core.c b/tests/test_core.c
index aa2bd4a..6f114b9 100644
--- a/tests/test_core.c
+++ b/tests/test_core.c
@@ -928,6 +928,74 @@ int main(void)
     CHECK(yyjson_arr_size(jget(d, "result.items")) == 0);
     yyjson_doc_free(d);
 
+    /* the same content may link to several vouchers, but not twice to one */
+    d = call(reqf("{\"v\":1,\"id\":\"61a\",\"cmd\":\"attachment.put\","
+                  "\"session\":\"%s\",\"org\":%d,\"args\":{\"filename\":"
+                  "\"kvitto.txt\",\"mime\":\"text/plain\","
+                  "\"content_base64\":\"aGVsbG8gd29ybGQ=\",\"voucher_id\":%lld}}",
+                  g_session, (int)org_id, (long long)sale_id));
+    CHECK_OK(d);
+    CHECK(jint(d, "result.id") == att_id);
+    yyjson_doc_free(d);
+
+    d = call(reqf("{\"v\":1,\"id\":\"61b\",\"cmd\":\"attachment.put\","
+                  "\"session\":\"%s\",\"org\":%d,\"args\":{\"filename\":"
+                  "\"kvitto.txt\",\"mime\":\"text/plain\","
+                  "\"content_base64\":\"aGVsbG8gd29ybGQ=\",\"voucher_id\":%lld}}",
+                  g_session, (int)org_id, (long long)sale_id));
+    CHECK_STR(d, "error.code", "CONFLICT");
+    yyjson_doc_free(d);
+
+    /* link/unlink an existing attachment */
+    d = call(reqf("{\"v\":1,\"id\":\"61c\",\"cmd\":\"attachment.put\","
+                  "\"session\":\"%s\",\"org\":%d,\"args\":{\"filename\":"
+                  "\"extra.txt\",\"content_base64\":\"ZXh0cmE=\"}}",
+                  g_session, (int)org_id));
+    CHECK_OK(d);
+    int64_t orphan = jint(d, "result.id");
+    CHECK(orphan > 0);
+    yyjson_doc_free(d);
+
+    d = call(reqf("{\"v\":1,\"id\":\"61d\",\"cmd\":\"attachment.link\","
+                  "\"session\":\"%s\",\"org\":%d,\"args\":{\"id\":%lld,"
+                  "\"voucher_id\":%lld}}",
+                  g_session, (int)org_id, (long long)orphan,
+                  (long long)sale_id));
+    CHECK_OK(d);
+    CHECK(jint(d, "result.voucher_id") == sale_id);
+    yyjson_doc_free(d);
+
+    d = call(reqf("{\"v\":1,\"id\":\"61e\",\"cmd\":\"attachment.link\","
+                  "\"session\":\"%s\",\"org\":%d,\"args\":{\"id\":%lld,"
+                  "\"voucher_id\":%lld}}",
+                  g_session, (int)org_id, (long long)orphan,
+                  (long long)sale_id));
+    CHECK_STR(d, "error.code", "CONFLICT");
+    yyjson_doc_free(d);
+
+    d = call(reqf("{\"v\":1,\"id\":\"61f\",\"cmd\":\"attachment.unlink\","
+                  "\"session\":\"%s\",\"org\":%d,\"args\":{\"id\":%lld,"
+                  "\"voucher_id\":%lld}}",
+                  g_session, (int)org_id, (long long)orphan,
+                  (long long)sale_id));
+    CHECK_OK(d);
+    yyjson_doc_free(d);
+
+    d = call(reqf("{\"v\":1,\"id\":\"61g\",\"cmd\":\"attachment.unlink\","
+                  "\"session\":\"%s\",\"org\":%d,\"args\":{\"id\":%lld,"
+                  "\"voucher_id\":%lld}}",
+                  g_session, (int)org_id, (long long)orphan,
+                  (long long)sale_id));
+    CHECK_STR(d, "error.code", "NOT_FOUND");
+    yyjson_doc_free(d);
+
+    d = call(reqf("{\"v\":1,\"id\":\"61h\",\"cmd\":\"attachment.link\","
+                  "\"session\":\"%s\",\"org\":%d,\"args\":{\"id\":%lld,"
+                  "\"voucher_id\":999999}}",
+                  g_session, (int)org_id, (long long)orphan));
+    CHECK_STR(d, "error.code", "NOT_FOUND");
+    yyjson_doc_free(d);
+
     /* correction */
     d = call(reqf("{\"v\":1,\"id\":\"62\",\"cmd\":\"voucher.correct\","
                   "\"session\":\"%s\",\"org\":%d,\"args\":{\"voucher\":%lld,"