61 lines
1.5 KiB
JavaScript
61 lines
1.5 KiB
JavaScript
const { BRIDGE_MODES, FEE_MANAGER_MODE } = require('./constants')
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function decodeBridgeMode(bridgeModeHash) {
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switch (bridgeModeHash) {
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case '0x92a8d7fe':
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return BRIDGE_MODES.NATIVE_TO_ERC
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case '0xba4690f5':
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return BRIDGE_MODES.ERC_TO_ERC
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case '0x18762d46':
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return BRIDGE_MODES.ERC_TO_NATIVE
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default:
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throw new Error(`Unrecognized bridge mode hash: '${bridgeModeHash}'`)
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}
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}
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const decodeFeeManagerMode = managerModeHash => {
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switch (managerModeHash) {
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case '0xf2aed8f7':
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return FEE_MANAGER_MODE.ONE_DIRECTION
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case '0xd7de965f':
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return FEE_MANAGER_MODE.BOTH_DIRECTIONS
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default:
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throw new Error(`Unrecognized fee manager mode hash: '${managerModeHash}'`)
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}
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}
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async function getBridgeMode(contract) {
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try {
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const bridgeModeHash = await contract.methods.getBridgeMode().call()
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return decodeBridgeMode(bridgeModeHash)
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} catch (e) {
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return BRIDGE_MODES.NATIVE_TO_ERC_V1
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}
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}
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const getUnit = bridgeMode => {
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let unitHome = null
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let unitForeign = null
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if (bridgeMode === BRIDGE_MODES.NATIVE_TO_ERC) {
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unitHome = 'Native coins'
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unitForeign = 'Tokens'
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} else if (bridgeMode === BRIDGE_MODES.ERC_TO_ERC) {
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unitHome = 'Tokens'
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unitForeign = 'Tokens'
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} else if (bridgeMode === BRIDGE_MODES.ERC_TO_NATIVE) {
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unitHome = 'Native coins'
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unitForeign = 'Tokens'
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} else {
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throw new Error(`Unrecognized bridge mode: ${bridgeMode}`)
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}
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return { unitHome, unitForeign }
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}
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module.exports = {
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decodeBridgeMode,
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decodeFeeManagerMode,
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getBridgeMode,
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getUnit
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}
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