90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
package radarfetch
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import (
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"encoding/json"
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"fmt"
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"os"
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"path/filepath"
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)
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type Bounds struct {
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West float64 `json:"west"`
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South float64 `json:"south"`
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East float64 `json:"east"`
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North float64 `json:"north"`
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}
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type Sources struct {
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NmcHTML string `json:"nmc_html"`
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NmcImg string `json:"nmc_img"`
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CmaBin string `json:"cma_bin"`
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}
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type Files struct {
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HTML string `json:"html"`
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PNG string `json:"png"`
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BIN string `json:"bin"`
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Metadata string `json:"metadata"`
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CMAPNG string `json:"cma_png"`
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}
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type Sizes struct {
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PNG int64 `json:"png"`
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BIN int64 `json:"bin"`
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}
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type Metadata struct {
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TimestampLocal string `json:"timestamp_local"`
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Date int `json:"date"`
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Hour int `json:"hour"`
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Minute int `json:"minute"`
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Z int `json:"z"`
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Y int `json:"y"`
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X int `json:"x"`
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Bounds Bounds `json:"bounds"`
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ResDeg float64 `json:"res_deg"`
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Sources Sources `json:"sources"`
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Files Files `json:"files"`
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Sizes Sizes `json:"sizes"`
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CreatedAt string `json:"created_at"`
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}
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func WriteMetadata(path string, m *Metadata) error {
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b, err := json.MarshalIndent(m, "", " ")
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if err != nil {
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return err
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}
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return os.WriteFile(path, b, 0o644)
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}
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func UpdateLatest(root string, curDir string, m *Metadata) error {
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latest := filepath.Join(root, "latest")
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if err := os.MkdirAll(latest, 0o755); err != nil {
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return err
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}
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// Write latest.json
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b, _ := json.MarshalIndent(struct {
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Dir string `json:"dir"`
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Meta *Metadata `json:"meta"`
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}{Dir: curDir, Meta: m}, "", " ")
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_ = os.WriteFile(filepath.Join(latest, "latest.json"), b, 0o644)
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copyFile := func(name string) {
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dst := filepath.Join(latest, name)
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src := filepath.Join(curDir, name)
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data, e2 := os.ReadFile(src)
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if e2 == nil {
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_ = os.WriteFile(dst, data, 0o644)
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}
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}
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copyFile("nmc_chinaall.png")
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copyFile("nmc_huanan.png")
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copyFile("nmc_nanning.png")
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copyFile("metadata.json")
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copyFile(fmt.Sprintf("%d-%d-%d.bin", m.Z, m.Y, m.X))
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if m.Files.CMAPNG != "" {
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copyFile(filepath.Base(m.Files.CMAPNG))
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}
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return nil
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}
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