From 748d60497fb6cdcc3fbc0a9dbd3bc812045ba85f Mon Sep 17 00:00:00 2001
From: default <nobody@localhost>
Date: Wed, 18 Sep 2024 12:12:58 +0200
Subject: [PATCH] Started support for CSV data export.

---
 data.c  | 23 ++++++++++++++++++++++
 main.c  |  5 +++++
 snac.h  |  3 +++
 utils.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 92 insertions(+)

diff --git a/data.c b/data.c
index b8d8332..ded3c42 100644
--- a/data.c
+++ b/data.c
@@ -1574,6 +1574,29 @@ int is_muted(snac *snac, const char *actor)
 }
 
 
+xs_list *muted_list(snac *user)
+/* returns the list (actor URLs) of the muted morons */
+{
+    xs_list *l = xs_list_new();
+    xs *spec = xs_fmt("%s/muted/" "*", user->basedir);
+    xs *files = xs_glob(spec, 0, 0);
+    const char *fn;
+
+    xs_list_foreach(files, fn) {
+        FILE *f;
+
+        if ((f = fopen(fn, "r")) != NULL) {
+            xs *actor = xs_strip_i(xs_readline(f));
+            fclose(f);
+
+            l = xs_list_append(l, actor);
+        }
+    }
+
+    return l;
+}
+
+
 /** bookmarking **/
 
 int is_bookmarked(snac *user, const char *id)
diff --git a/main.c b/main.c
index 9babc75..9770882 100644
--- a/main.c
+++ b/main.c
@@ -267,6 +267,11 @@ int main(int argc, char *argv[])
         return 0;
     }
 
+    if (strcmp(cmd, "export_csv") == 0) { /** **/
+        export_csv(&snac);
+        return 0;
+    }
+
     if ((url = GET_ARGV()) == NULL)
         return usage();
 
diff --git a/snac.h b/snac.h
index dbf03d6..57c11fe 100644
--- a/snac.h
+++ b/snac.h
@@ -165,6 +165,7 @@ xs_list *following_list(snac *snac);
 void mute(snac *snac, const char *actor);
 void unmute(snac *snac, const char *actor);
 int is_muted(snac *snac, const char *actor);
+xs_list *muted_list(snac *user);
 
 int is_bookmarked(snac *user, const char *id);
 int bookmark(snac *user, const char *id);
@@ -387,6 +388,8 @@ void mastoapi_purge(void);
 
 void verify_links(snac *user);
 
+void export_csv(snac *user);
+void import_csv(snac *user);
 
 typedef enum {
 #define HTTP_STATUS(code, name, text) HTTP_STATUS_ ## name = code,
diff --git a/utils.c b/utils.c
index e9ec251..c64829d 100644
--- a/utils.c
+++ b/utils.c
@@ -565,3 +565,64 @@ void verify_links(snac *user)
             rename(bfn, fn);
     }
 }
+
+
+void export_csv(snac *user)
+/* exports user data to current directory in a way that pleases Mastodon */
+{
+    FILE *f;
+    const char *fn;
+
+    fn = "bookmarks.csv";
+    if ((f = fopen(fn, "w")) != NULL) {
+        snac_log(user, xs_fmt("Creating %s...", fn));
+
+        xs *l = bookmark_list(user);
+        const char *md5;
+
+        xs_list_foreach(l, md5) {
+            xs *post = NULL;
+
+            if (valid_status(object_get_by_md5(md5, &post))) {
+                const char *id = xs_dict_get(post, "id");
+
+                if (xs_type(id) == XSTYPE_STRING)
+                    fprintf(f, "%s\n", id);
+            }
+        }
+
+        fclose(f);
+    }
+    else
+        snac_log(user, xs_fmt("Cannot create file %s", fn));
+
+    fn = "blocked_accounts.csv";
+    if ((f = fopen(fn, "w")) != NULL) {
+        snac_log(user, xs_fmt("Creating %s...", fn));
+
+        xs *l = muted_list(user);
+        const char *actor;
+
+        xs_list_foreach(l, actor) {
+            xs *uid = NULL;
+            int status;
+
+            if (valid_status((status = webfinger_request(actor, NULL, &uid)))) {
+                fprintf(f, "%s\n", uid);
+            }
+            else
+                snac_log(user, xs_fmt("Error resolving muted user %s %d", actor, status));
+        }
+
+        fclose(f);
+    }
+    else
+        snac_log(user, xs_fmt("Cannot create file %s", fn));
+}
+
+
+void import_csv(snac *user)
+/* import CSV files from Mastodon */
+{
+    (void)user;
+}