fix: task slicing index range restraints

index.html

@@ -379,7 +379,7 @@ $.set('#subcategory', 'change', (e) => {
 });
 
 $.set('#chunksize', 'change', (e) => {
-    let limit = Math.max(minor, major - 1);
+    let limit = Math.max(minor || major - 1, 0);
     let value = Math.floor(limit / e.target.valueAsNumber);
     $('#limit').value = value;
     $('#offset').max = value;
@@ -448,11 +448,11 @@ while (await new Promise(o => setTimeout(o, 1000, true))) {
             $('#send').classList.add('pulse');
             $('#timezoneLabel').innerText = Temporal.Now.zonedDateTimeISO(locale.timezone).toLocaleString(locale.name);
 
-            let { done, skip, omit, email, subject, recipient } = await Rpc2.invoke('progress').catch(() => new Object());
+            let { done, skip, email, subject, recipient } = await Rpc2.invoke('progress').catch(() => new Object());
-            let limit = minor || major - 1;
+            let count = done + skip;
+            let limit = Math.max(minor || major - 1, 0);
             let chunk = $('#chunksize').valueAsNumber;
             let total = $('#slice').checked ? Math.min(chunk, limit - chunk * $('#offset').valueAsNumber) : limit;
-            let count = $('#slice').checked ? done + skip - omit : done + skip;
 
             $('#progressLabel').innerText = `${parseFloat(count / total * 100).toFixed(2)}% (${count}/${total})`;
             $('#subjectLabel').innerText = subject ?? '';

main.py

@@ -347,6 +347,7 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
 
     class MismatchedEmailSubject(Exception): pass
     class MismatchedEmailAddress(Exception): pass
+    class Next(Exception): pass
 
     while True:
         try:
@@ -373,7 +374,7 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
 
             progress['done'] = 0
             progress['skip'] = 0
-            progress['omit'] = 0
+            progress['next'] = 0
             progress['subject'] = subject
             logger.info('Done')
         except Cancel:
@@ -407,15 +408,17 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
                     logger.warning("[%d/%d] Exhausted all allowed attempts; skipping", index-1, limit-1)
                     raise Skip()
 
-                if index < options.get('start', 2) or progress['done'] >= options.get('limit', limit):
+                if options.get('slice') and (start := options.get('start')) and (end := options.get('limit')):
-                    logger.info("[%d/%d] Not planned; skipping '%s'", index-1, limit-1, email)
+                    if index < start or index > start + end:
-                    progress['omit'] += 1
+                        logger.info("[%d/%d] Not planned; skipping '%s'", index-1, limit-1, email)
-                    raise Skip()
+                        raise Next()
+                    if (items := options.get('subcategories')) and (item := str(cell(index, column.region).value)) not in items:
+                        logger.info("[%d/%d] Value '%s' not enlisted; skipping '%s'", index-1, limit-1, item, email)
+                        raise Next()
 
                 if (sent := cell(index, column.sent).value) is not None and str(sent).strip():
                     logger.info("[%d/%d] Already visited; skipping '%s'", index-1, limit-1, email)
                     occurrence[code] += 1
-                    progress['omit'] += 1
                     raise Skip()
 
                 match options.get('occurrence'):
@@ -428,11 +431,6 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
                         logger.info("[%d/%d] No Spam! Skipping '%s'", index-1, limit-1, email)
                         raise Skip()
 
-                if options.get('slice') and (sub := options.get('subcategories')):
-                    if (value := str(cell(index, column.region).value)) not in sub:
-                        logger.info("[%d/%d] Value '%s' not enlisted; skipping '%s'", index-1, limit-1, value, email)
-                        raise Skip()
-
                 while mails := driver.find_elements(By.CSS_SELECTOR, "div.io-ox-mail-compose-window"):
                     try:
                         click(mails[0].find_element(By.CSS_SELECTOR, "button[data-action='close']"), wait=False)
@@ -486,8 +484,8 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
                     hello += ','
                     action.send_keys(hello).perform()
 
-                    if items := iframe.find_elements(By.XPATH, f'//*[contains(text(), "{hello}")]'):
+                    if elements := iframe.find_elements(By.XPATH, f'//*[contains(text(), "{hello}")]'):
-                        target = items[0]
+                        target = elements[0]
                         clean = target.text == hello
 
                 driver.switch_to.default_content()
@@ -523,16 +521,16 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
 
                 flow.react(Wait)
                 click("div.io-ox-mail-compose-window button[data-action='send']")
-            except Skip:
-                progress['skip'] += 1
-                index += 1
-                attempts = 0
-                continue
             except Cancel:
                 status = Status.IDLE
                 break
+            except (Next, Skip) as e:
+                progress[e.__class__.__name__.lower()] += 1
+                index += 1
+                attempts = 0
+                continue
             except (MismatchedEmailAddress, MismatchedEmailSubject) as e:
-                logger.error('Nuh-Uh', exc_info=e)
+                logger.error('Input mismatched', exc_info=e)
                 status = Status.STANDBY
                 continue
             except Exception as e: