utils = include("sv_utils.lua")
config = include("sv_config.lua")
symbtoms_list = include("sv_symbtom_list.lua")
Symbtom = include("sv_symbtom.lua")
Disease = include("sv_disease.lua")

local settings = {}

utils.path_create(config.settings_path)

if not file.Exists(config.settings_path, "DATA") 
then
    local default_config = {}
    default_config.diseases = {}
    file.Write(config.settings_path, util.TableToJSON(default_config, true))
end

local data = file.Read(config.settings_path)
data = util.JSONToTable(data)

if data.diseases == nil 
then
    print(config.settings_path .. "file error")
    return nil
end

settings.diseases = {}

for i, disease in ipairs(data.diseases)
do
    local name = ""
    local symbtoms_by_stages = {}
    local contamination_methods = {}
    local transmission_zone_stages = {}
    local stages_duration = {}

    if (disease.name == nil)
    then
        print("[SKIP] missing name in the " .. i .. " disease")
        return nil
    end
    name = disease.name

    if (disease.symbtoms_by_stages == nil)
    then
        print("[SKIP] missing symbtoms_by_stages in " .. name .." disease")
        continue
    end
    table.insert(symbtoms_by_stages, {})
    for y, stage in ipairs(disease.symbtoms_by_stages)
    do
        symbtoms_by_stages[y] = {}

        for j, symbtom in ipairs(stage)
        do
            if symbtom.name == nil
            then
                print("[ERROR] missing name in the " .. j .. " symbtom of the " .. y .. " stage of the " .. name .. " disease")
                return nil
            end
            if symbtoms_list[symbtom.name] == nil
            then
                print("[ERROR] " .. symbtom.name .. " unknown symbtom in the " .. j .. " symbtom of the " .. y .. " stage of the " .. name .. " disease")
                return nil
            end
            if symbtom.level == nil
            then
                print("[ERROR] missing level in the " .. j .. " symbtom (" .. symbtom.name ..") of the " .. y .. " stage of the " .. name .. " disease")
                return nil
            end
            if type(symbtom.level) != "number" or 0 > symbtom.level or symbtom.level > 1
            then
                print("[ERROR] invalid level in the " .. j .. " symbtom (" .. symbtom.name ..") of the " .. y .. " stage of the " .. name .. " disease")
                return nil
            end
            if symbtom.delay == nil
            then
                print("[ERROR] missing delay in the " .. j .. " symbtom (" .. symbtom.name ..") of the " .. y .. " stage of the " .. name .. " disease")
                return nil
            end
            if type(symbtom.delay) != "number"
            then
                print("[ERROR] invalid delay in the " .. j .. " symbtom (" .. symbtom.name ..") of the " .. y .. " stage of the " .. name .. " disease")
                return nil
            end
            table.insert(symbtoms_by_stages[y], Symbtom:new(symbtom.name, symbtoms_list[symbtom.name], symbtom.level, symbtom.delay))
        end
    end

    if disease.contaminations_method == nil 
    then
        print("[SKIP] missing contamination_method in the " .. name .. " disease")
        continue
    end
    for k, contamination_method in ipairs(disease.contaminations_method)
    do
        if contamination_method.name == nil 
        then
            print("[SKIP] missing name in the " .. k .. " contamination_method of the " .. name .. " disease")
            break 
        end
        if contamination_method.chance == nil 
        then
            print("[SKIP] missing chance in the " .. contamination_method.name .. " contaminations_method of the " .. name .. " disease")
            break 
        end
    end
    contamination_methods = disease.contamination_methods

    if disease.transmission_zone_stages == nil 
    then
        print("[SKIP] missing transmission_zone_stages in the " .. name .. " disease")
        continue
    end
    for k, transmission_zone_stage in ipairs(disease.transmission_zone_stages)
    do
        if type(transmission_zone_stage) != "number"
        then
            print("[SKIP] non number " .. k .. " transmission_zone_stages in the " .. name)
            break 
        end
    end
    transmission_zone_stages = disease.transmission_zone_stages

    
    if disease.stages_duration == nil 
    then
        print("[SKIP] missing stages_duration in the " .. name .. " disease")
        continue
    end
    for k, stage_duration in ipairs(disease.stages_duration)
    do
        if type(stage_duration) != "number"
        then
            print("[SKIP] non number " .. k .. " stages_duration in the " .. name)
            break 
        end
    end
    stages_duration = disease.stages_duration

    table.insert(settings.diseases, Disease:new(name, symbtoms_by_stages, contamination_methods,  transmission_zone_stages, stages_durations))
end

print("[OK] settings")

---name string? the name of the disease
function settings.getDiseaseByName(name)
    for _, disease in ipairs(settings.diseases)
    do
        if disease.name == name
        then
            return disease
        end
    end
    return nil
end

return settings