local core = require("apisix.core")
local ngx = ngx

local plugin_name = "custom-redirect"

local schema = {
    type = "object",
    properties = {
        target_host = {type = "string"},
    },
}

local _M = {
    version = 0.1,
    priority = 1000,
    name = plugin_name,
    schema = schema,
}

function _M.access(conf, ctx)
    if ngx.var.scheme == "http" then
        local host = conf.target_host or ngx.var.host
        local target = "https://" .. host .. ngx.var.request_uri
        return ngx.redirect(target, ngx.HTTP_MOVED_PERMANENTLY)
    end
end

return _M