lots of sql stuff, again

src/common/kernel/sqlite.c

@@ -1,33 +1,129 @@
 #include <config.h>
 #include <kernel/eressea.h>
 #include <kernel/faction.h>
+#include <util/unicode.h>
 #include <sqlite3.h>
 #include <md5.h>
 
+faction * get_faction_by_id(int uid)
+{
+  faction * f;
+  for (f=factions;f;f=f->next) {
+    if (f->subscription==uid) {
+      return f;
+    }
+  }
+  return NULL;
+}
+
 int
 db_update_factions(sqlite3 * db)
 {
-  const char * sql = "INSERT OR REPLACE INTO email (md5, email) VALUES(?, ?)";
+  int game_id = 6;
+//  const char * sql = "INSERT OR REPLACE INTO email (md5, email) VALUES(?, ?)";
+  const char * sql_select = 
+      "SELECT faction.id, faction.email_id, faction.no, email.email FROM email, faction"
+      " WHERE email.id=faction.email_id AND faction.game_id=?";
+  const char * sql_insert_email = 
+      "INSERT OR IGNORE email (email,md5) VALUES (?,?)";
+  const char * sql_select_email =
+      "SELECT id FROM email WHERE md5=?";
+  const char * sql_update_faction = 
+      "UPDATE faction SET email_id=?, lastturn=?, no=? WHERE id=?";
+
   faction * f;
-  sqlite3_stmt *stmt;
-  int res = sqlite3_prepare_v2(db, sql, strlen(sql)+1, &stmt, NULL);
-  if (res!=SQLITE_OK) {
-    return res;
+  sqlite3_stmt *stmt_insert_email;
+  sqlite3_stmt *stmt_select_email;
+  sqlite3_stmt *stmt_update_faction;
+  sqlite3_stmt *stmt_select;
+  int res;
+  
+  res = sqlite3_prepare_v2(db, sql_select_email, strlen(sql_select_email)+1, &stmt_select_email, NULL);
+  if (res!=SQLITE_OK) return res;
+  res = sqlite3_prepare_v2(db, sql_insert_email, strlen(sql_insert_email)+1, &stmt_insert_email, NULL);
+  if (res!=SQLITE_OK) return res;
+  res = sqlite3_prepare_v2(db, sql_select, strlen(sql_select)+1, &stmt_select, NULL);
+  if (res!=SQLITE_OK) return res;
+  res = sqlite3_prepare_v2(db, sql_update_faction, strlen(sql_update_faction)+1, &stmt_update_faction, NULL);
+  if (res!=SQLITE_OK) return res;
+
+  res = sqlite3_bind_int(stmt_select, 1, game_id);
+  for (;;) {
+    sqlite3_uint64 idfaction, idemail;
+    char email[64];
+    int length, no;
+    
+    res = sqlite3_step(stmt_select);
+    if (res!=SQLITE_ROW) break;
+    idfaction = sqlite3_column_int64(stmt_select, 0);
+    idemail = sqlite3_column_int64(stmt_select, 1);
+    no = sqlite3_column_int(stmt_select, 2);
+    length = sqlite3_column_bytes(stmt_select, 3);
+    assert(length<sizeof(email));
+    memcpy(email, sqlite3_column_text(stmt_select, 3), length);
+    f = get_faction_by_id((int)idfaction);
+    if (f==NULL) {
+      // update status?
+    } else {
+      if (strcmp(f->email, email)!=0) {
+        char lower[64];
+        unicode_utf8_tolower(lower, sizeof(lower), f->email);
+        if (strcmp(email, lower)!=0) {
+          char md5hash[33];
+          md5_state_t ms;
+          md5_byte_t digest[16];
+          int i;
+
+          md5_init(&ms);
+          md5_append(&ms, (md5_byte_t*)lower, strlen(lower));
+          md5_finish(&ms, digest);
+          for (i=0;i!=16;++i) sprintf(md5hash+2*i, "%.02x", digest[i]);
+
+          idemail = 0;
+          res = sqlite3_bind_text(stmt_insert_email, 1, lower, -1, SQLITE_TRANSIENT);
+          res = sqlite3_bind_text(stmt_insert_email, 2, md5hash, -1, SQLITE_TRANSIENT);
+          res = sqlite3_step(stmt_insert_email);
+          if (res==SQLITE_OK) {
+            idemail = sqlite3_last_insert_rowid(db);
+          } else {
+            res = sqlite3_bind_text(stmt_select_email, 1, md5hash, -1, SQLITE_TRANSIENT);
+            res = sqlite3_step(stmt_select_email);
+            if (res==SQLITE_ROW) {
+              idemail = sqlite3_column_int64(stmt_select_email, 0);
             }
+          }
+          // INSERT OR IGNORE email
+          // if (OK) idemail = lat_rowid
+          // else SELECT email.id
+          // UPDATE faction SET email_id=?, lastturn=?, no=?
+        }
+      }
+      res = sqlite3_bind_int64(stmt_update_faction, 1, idemail);
+      res = sqlite3_bind_int(stmt_update_faction, 2, turn);
+      res = sqlite3_bind_int(stmt_update_faction, 3, f->no);
+      res = sqlite3_bind_int64(stmt_update_faction, 4, idfaction);
+      res = sqlite3_step(stmt_update_faction);
+    }
+  }
+  sqlite3_finalize(stmt_select);
+/*  
   for (f=factions;f;f=f->next) {
+    char email[64];
     char hash[33];
     md5_state_t ms;
     md5_byte_t digest[16];
     int i;
     sqlite3_int64 rowid;
     
+    unicode_utf8_tolower(email, sizeof(email), f->email);
+    
     md5_init(&ms);
-    md5_append(&ms, (md5_byte_t*)f->email, strlen(f->email));
+    md5_append(&ms, (md5_byte_t*)email, strlen(email));
     md5_finish(&ms, digest);
     for (i=0;i!=16;++i) sprintf(hash+2*i, "%.02x", digest[i]);
     
     res = sqlite3_bind_text(stmt, 1, hash, -1, SQLITE_TRANSIENT);
-    res = sqlite3_bind_text(stmt, 2, f->email, -1, SQLITE_TRANSIENT);
+    res = sqlite3_bind_text(stmt, 2, email, -1, SQLITE_TRANSIENT);
     do {
       res = sqlite3_step(stmt);
     } while (res!=SQLITE_DONE);
@@ -36,5 +132,6 @@ db_update_factions(sqlite3 * db)
     sqlite3_reset(stmt);
   }
   sqlite3_finalize(stmt);
+ */
   return SQLITE_OK;
 }