Plugin = {
  name        = "Scopes",
  description = [[
Auto-forward requests and exclude them from history based on patterns.

**Config** (YAML):
```yaml
patterns:
  - "pattern"      # whitelist: only intercept matching requests/responses and history
  - "!pattern"     # blacklist: skip matching requests/responses and history
  - "r:pattern"    # whitelist for requests/responses only
  - "r:!pattern"   # blacklist for requests/responses only
  - "h:pattern"    # whitelist for history only
  - "h:!pattern"   # blacklist for history only
```

Example (ignore static assets):
```yaml
patterns:
  - "!%.css$"
  - "!%.js$"
  - "!%.png$"
```

Example (focus on mytarget.com):
```yaml
patterns:
  - "mytarget%.com/"
```

Example (disable history):
```yaml
patterns:
  - "h:^$"
```
  ]],
  priority         = 100,
  on_request       = { sync = true },
  on_response      = { sync = true },
  on_history_entry = { sync = true },
}

local blacklist      = {}
local whitelist      = {}
local blacklist_req  = {}
local whitelist_req  = {}
local blacklist_hist = {}
local whitelist_hist = {}

function on_config()
  blacklist, whitelist = {}, {}
  blacklist_req, whitelist_req = {}, {}
  blacklist_hist, whitelist_hist = {}, {}
  local cfg = get_config()
  if not cfg or not cfg.patterns then return end
  for _, line in ipairs(cfg.patterns) do
    local trimmed = line:match("^%s*(.-)%s*$")
    if trimmed ~= "" and trimmed:sub(1, 1) ~= "#" then
      local scope = trimmed:match("^([rh]):")
      local rest  = scope and trimmed:sub(3) or trimmed
      local is_bl = rest:sub(1, 1) == "!"
      local pattern = is_bl and rest:sub(2) or rest
      if scope == "r" then
        table.insert(is_bl and blacklist_req or whitelist_req, pattern)
      elseif scope == "h" then
        table.insert(is_bl and blacklist_hist or whitelist_hist, pattern)
      else
        table.insert(is_bl and blacklist or whitelist, pattern)
      end
    end
  end
end

local function check_skip(url, bl_extra, wl_extra)
  for _, p in ipairs(blacklist) do
    if url:match(p) then return true end
  end
  for _, p in ipairs(bl_extra) do
    if url:match(p) then return true end
  end
  local wl = {}
  for _, p in ipairs(whitelist)  do wl[#wl + 1] = p end
  for _, p in ipairs(wl_extra)   do wl[#wl + 1] = p end
  if #wl > 0 then
    for _, p in ipairs(wl) do
      if url:match(p) then return false end
    end
    return true
  end
  return false
end

function on_request(req)
  if check_skip(req.url, blacklist_req, whitelist_req) then return "forward" end
end

function on_response(req)
  if check_skip(req.url, blacklist_req, whitelist_req) then return "forward" end
end

function on_history_entry(entry)
  if check_skip(entry.host .. entry.path, blacklist_hist, whitelist_hist) then return "skip" end
end