fix loops, improve time estimator

make_cover_briefs.lua

@@ -156,6 +156,7 @@ end
 
 local convert_ebooks = function(books)
   for name, data in pairs(books) do
+    local function loop()
       if data.extracted_file then return end
       if not data.ebook_file then return end
 
@@ -168,6 +169,8 @@ local convert_ebooks = function(books)
         data.extracted_file_size = utility.file_size(extracted_file)
       end
     end
+    loop()
+  end
 end
 
 local condense_summary = function(name, data, sections)
@@ -248,6 +251,7 @@ end
 
 local generate_cover_briefs = function(books)
   for name, data in pairs(books) do
+    local function loop()
       if data.cover_brief_file then return end
       print(name)
 
@@ -255,7 +259,7 @@ local generate_cover_briefs = function(books)
       if data.extracted_file_size > config.llm_covers.maximum_bytes then
         text = generate_summary(name, data)
       else
-      text = read_all(extracted_file)
+        text = read_all(data.extracted_file)
       end
 
       print("Generating cover brief.")
@@ -266,15 +270,20 @@ local generate_cover_briefs = function(books)
       write_all("for_gemini/" .. name .. ".txt", "Title: " .. name .. prompts.for_gemini .. text)
       data.cover_brief_file = cover_brief_file
     end
+    loop()
+  end
 end
 
 local estimate_time_required = function(books)
   local sum, count = 0, 0
   for name, data in pairs(books) do
+    local function loop()
       if data.cover_brief_file then return end
-    sum = sum + 60 * (2 + data.extracted_file_size/(config.llm_covers.maximum_bytes/7.5))
+      sum = sum + 60 * (1.5 + data.extracted_file_size/(config.llm_covers.maximum_bytes/7.5))
       count = count + 1
     end
+    loop()
+  end
 
   print(count .. " cover briefs to generate. Estimated time: "
     .. timing.seconds_to_minutes(sum) .. " minutes.")
@@ -293,5 +302,7 @@ generate_cover_briefs(books)
 print("")
 timing.print_report()
 
+-- utility.print_table(books)
+
 -- ebook_file, extracted_file, extracted_file_size,
 -- intermediate_file, condensed_intermediate_file, cover_brief_file