const MODES = {
    NO_REDIRECT: 0,
    RU_TO_LOCAL: 1,
    LOCAL_TO_RU: 2,
}

chrome.runtime.onInstalled.addListener(() => {
    chrome.storage.local.set({ redirectMode: MODES.NO_REDIRECT })
})

chrome.storage.onChanged.addListener((changes) => {
    if (changes.redirectMode) updateRules(changes.redirectMode.newValue)
})

const updateRules = (mode) => {
    chrome.declarativeNetRequest.updateEnabledRulesets({
        disableRulesetIds: ['ruleset'],
        enableRulesetIds: [],
    }, () => {
        let rulesToEnable = []
        switch (mode) {
            case MODES.RU_TO_LOCAL:
                rulesToEnable = [1]
                break

            case MODES.LOCAL_TO_RU:
                rulesToEnable = [2]
                break
        }

        chrome.declarativeNetRequest.updateDynamicRules({
            removeRuleIds: [1, 2],
            addRules: rulesToEnable.map(id => createRuleById(id)),
        })
    })
}

const createRuleById = (id) => {
    const rules = {
        1: {
            id: 1,
            priority: 1,
            action: {
                type: 'redirect',
                redirect: {
                    regexSubstitution: 'https://corp.tularegion.local\\1'
                },
            },
            condition: {
                regexFilter: '^https://corp\\.tularegion\\.ru(.*)$',
                resourceTypes: ['main_frame'],
            },
        },
        2: {
            id: 2,
            priority: 1,
            action: {
                type: 'redirect',
                redirect: {
                    regexSubstitution: 'https://corp.tularegion.ru\\1'
                },
            },
            condition: {
                regexFilter: '^https://corp\\.tularegion\\.local(.*)$',
                resourceTypes: ['main_frame'],
            },
        },
    }
    return rules[id]
}