erroneousboat-slack-term/config/config.go

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package config
import (
"encoding/json"
"errors"
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"os"
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"github.com/gizak/termui"
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)
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// Config is the definition of a Config struct
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type Config struct {
SlackToken string `json:"slack_token"`
Theme string `json:"theme"`
SidebarWidth int `json:"sidebar_width"`
MainWidth int `json:"-"`
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KeyMap map[string]keyMapping `json:"key_map"`
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}
type keyMapping map[string]string
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// NewConfig loads the config file and returns a Config struct
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func NewConfig(filepath string) (*Config, error) {
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cfg := Config{
Theme: "dark",
SidebarWidth: 1,
MainWidth: 11,
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KeyMap: map[string]keyMapping{
"command": {
"i": "mode-insert",
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"/": "mode-search",
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"k": "channel-up",
"j": "channel-down",
"g": "channel-top",
"G": "channel-bottom",
"<previous>": "chat-up",
"C-b": "chat-up",
"C-u": "chat-up",
"<next>": "chat-down",
"C-f": "chat-down",
"C-d": "chat-down",
"q": "quit",
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"<f1>": "help",
},
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"insert": {
"<left>": "cursor-left",
"<right>": "cursor-right",
"<enter>": "send",
"<escape>": "mode-command",
"<backspace>": "backspace",
"C-8": "backspace",
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"<delete>": "delete",
"<space>": "space",
},
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"search": {
"<left>": "cursor-left",
"<right>": "cursor-right",
"<escape>": "clear-input",
"<enter>": "clear-input",
"<backspace>": "backspace",
"C-8": "backspace",
"<delete>": "delete",
"<space>": "space",
},
},
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}
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file, err := os.Open(filepath)
if err != nil {
return &cfg, err
}
if err := json.NewDecoder(file).Decode(&cfg); err != nil {
return &cfg, err
}
if cfg.SlackToken == "" {
return &cfg, errors.New("couldn't find 'slack_token' parameter")
}
if cfg.SidebarWidth < 1 || cfg.SidebarWidth > 11 {
return &cfg, errors.New("please specify the 'sidebar_width' between 1 and 11")
}
cfg.MainWidth = 12 - cfg.SidebarWidth
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if cfg.Theme == "light" {
termui.ColorMap = map[string]termui.Attribute{
"fg": termui.ColorBlack,
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"bg": termui.ColorWhite,
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"border.fg": termui.ColorBlack,
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"label.fg": termui.ColorBlue,
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"par.fg": termui.ColorYellow,
"par.label.bg": termui.ColorWhite,
}
}
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return &cfg, nil
}